Subject: Re: [Healeys] Overdrive pressure or clutch slip Step 2!

From: Bob Spidell <[email-masked]> ipQkmvFyHLKw1b5qmtGcbNon/gJJ4jlNN14cHhQgpz1zwRckLB0bhah686LsfG53FHelAr3R+f/wtEbyFFAvX1sjh6spNG/XhRRWSNy0OvnlP6M4+LeiUyUy
Date: Fri, 26 Apr 2024 11:16:43 -0700

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I lost the plot (not unusual): Have we determined, for sure, that the 
problem is 'slippage,' which would most likely be due to wear in the O/D 
cone clutch? Or have we determined that Simon's O/D is 'dropping out' 
which, to my thinking, would be caused by the 8 strong springs 
overcoming hydraulic pressure (and causing the brake ring to slip or 
disengage, no?).

On 4/26/2024 10:03 AM, Hank Leach wrote:
> Ok the pressure gauge implies that the hydraulic system is in good 
> condition and that will effectively produce overdrive when the cone 
> clutch is pushed forward in the box. When OD is *not required* the 
> solenoid is inactive and the 8 springs in the unit have to keep the 
> cone clutch in the rearward or in direct drive position.
> These are stout springs and normally are strong enough to engage and 
> hold the clutch without slipping, overcoming the hydraulic 
> influence-which should be draining at this point..However if the 
> springs are misinstalled in the wrong position or not properly mounted 
> on their tabs upon assembly or previously "coil bound" from that 
> procedure or wear, they will not function to keep direct drive solid 
> without slipping.
> The clutch material should outlive all of us and is not normally, or 
> easily, replaced. All you have to keep the car in direct drive are 
> those 8 springs and their pressure.
> -Hate to say it but if the re-assembly was defective, the gearbox 
> needs to come out and OD removed and checked for correct spring fit-at 
> that time I would replace the 8 springs (about $100 from Moss) as a 
> routine repair. (photos from my article in AH Mag) Hank
>
> From: "Bob Spidell" <[email-masked]>
> To: <[email-masked]>
> Sent: April 26, 2024 at 9:37 AM PDT
> Subject: Re: [Healeys] Overdrive pressure or clutch slip Step 2!
> Spitballing ...
>
> I went through my BJ8's O/D a few years ago. The car had 64K miles on 
> it when I bought it (approx. 1984), and about 215K* miles on it when I 
> did the overhaul. The O/D cone clutch was serviceable--and AFAIK 
> didn't slip--and I reinstalled it. If new cone clutches were readily 
> available I /might/ have bought new, on principle, depending on cost, 
> but all I could find was a re-manned one from DWM. To me this implied 
> they didn't often need replacement, whereas known wear items like the 
> accumulator are offered by several vendors (I would have installed one 
> with an O-ring if I'd known about it).
>
> All this to say, unless the car has extremely high mileage and/or the 
> O/D has been abused somehow I'd be surprised if the clutch is worn 'to 
> the bone.' Obviously, slippage in the cone clutch would cause Simon's 
> car's symptoms; if so, the problem will get progressively worse (and 
> more consistent). I think one way to test an O/D clutch would be to 
> really lug the car pulling an uphill grade in 4th-O/D, if the clutch 
> is going to slip it would do it then (as would a worn engine clutch). 
> There's also a (remote) possibility that, for some reason, O/D 
> pressure fluctuates during driving.
>
>
> * Anyone else have this many or more known miles on a Healey?
>
> bs
>
>
>
> On 4/26/2024 4:51 AM, Michael Salter wrote:
>
>     "What I can’t do is understand the leap to the OD cone clutch?"
>      Fair question.
>     Between the flywheel and the rear wheels there are only 2 places
>     where "slippage" can occur these are the clutch and the
>     overdrive's cone clutch.
>     The gearbox, other than the cone clutch in the overdrive, is a
>     go/no go arrangement, i.e. no "slippage".
>     The rear wheel splines, believe it or not, can also produce
>     "slippage " if they are in really bad condition but I presume that
>     isn't the case here.
>     The test that you just completed resulted in no driveline slippage
>     when the overdrive was disabled.
>     You are reporting slippage when the overdrive operating system is
>     enabled so it follows that further diagnosis of that is required.
>     Yes, your next step would be the same test drive, i.e. full engine
>     torque on an uphill grade, to confirm that the slippage issue has
>     returned now that the overdriveoperating valvehasbe re-installed.
>     I would do this test drive BEFORE making any adjustments to the
>     overdrive valve or solenoid in order to confirm that meerly
>     installing the overdrive operating valve resulted in the slippage
>     issue returning.
>     Hope the weather improves, beautiful day here.
>     M
>
>     On Fri., Apr. 26, 2024, 7:24 a.m. Simon Lachlan,
>     <[email-masked]> wrote:
>
>         Hi, Thanks for this.
>
>         Not sure I understand fully.
>
>         Once I’d finished the test drive with the OD operating valve
>         out of the car, I returned the rod, ball, spring etc and put
>         in the gauge rather than the nut. And got 500+ psi.
>
>         What I can’t do is understand the leap to the OD cone clutch.
>         Not arguing…just saying no comprende. As I sat in the car, I
>         was thinking that the function of the OD seems OK and that
>         it’s being interfered with by something in its
>         circuitry……relay, solenoid or throttle switch. That’s probably
>         wishful thinking as I really don’t want to be swimming in
>         those waters.
>
>         I did, as a matter of course, clean out the tiny hole in the
>         rod but didn’t detect any blockage….which doesn’t mean much as
>         something minute could have been inside and been washed away
>         by the detergent/hot water then WD40…..
>
>         After someone’s advice – some time back – I’ve got another rod
>         whose aperture has been drilled out to 1.5mm. This was “to
>         allow the OD to disengage faster”. Don’t recall if I tried it.
>         Could that rod be any help here?
>
>         The ball seems to be sitting square on its seat and the tip of
>         the rod, where the ball sits, is not worn or chipped.
>
>         Residual pressure….. goes to 500+ when I switch OD ON and
>         stays there until, engine and switch OFF, I energize the
>         solenoid a few times whereupon it drops to zero.
>
>         Another test drive(s) seems called for. But the hood is off to
>         enable access and the forecast is grim for the next week.
>
>         Very open to more suggestions. Thanks,
>
>         Simon
>
>         *From:*Michael Salter <[email-masked]>
>         *Sent:* Friday, April 26, 2024 12:14 AM
>         *To:* Simon Lachlan <[email-masked]>
>         *Cc:* Healeys <[email-masked]>
>         *Subject:* Re: Overdrive pressure or clutch slip Step 2!
>
>         Okay, then it is confirmed that neither the clutch (on the
>         flywheel) nor the overdrive cone clutch (in it's normal drive
>         condition) are producing the slippage.
>
>         From this we can conclude that even when the overdrive
>         solenoid is *_not_* energized the slippage is occurring at the
>         overdrive cone clutch and that for some reason hydraulic
>         pressure is finding its way into the overdrive operating
>         cylinders even when the overdrive operating valve is closed.
>
>         This can be caused by leakage past operating the valve or
>         residual pressure.
>
>         The question of residual pressure can be resolved by checking
>         that the bleed hole in the bottom of the long overdrive valve
>         push rod is not blocked.
>
>         Whether or not hydraulic pressure is leaking past the
>         operating valve ball can be checked by ensuring that the ball
>         is clearly on its seat when the operating valve is *_not
>         _* energized.
>
>         M
>
>         On Thu., Apr. 25, 2024, 3:38 p.m. Simon Lachlan,
>         <[email-masked]> wrote:
>
>             Of course. Isn’t that how I got the 520psi?
>
>             *From:*Michael Salter <[email-masked]>
>             *Sent:* Thursday, April 25, 2024 6:19 PM
>             *To:* Simon Lachlan <[email-masked]>
>             *Cc:* Healeys <[email-masked]>
>             *Subject:* Re: Overdrive pressure or clutch slip Step 2!
>
>             Question  ... when you got home and did the pressure test
>             I presume that was AFTER you had put the valve with the
>             "top hat", ball, spring and valve rod cap and washer back
>             into position?
>
>             M
>
>             On Thu., Apr. 25, 2024, 12:29 p.m. Simon Lachlan,
>             <[email-masked]> wrote:
>
>                 So, here is Michael’s “Step 1” completed. (See his
>                 email, below).
>
>                  1. Removed the operating valve and, just for luck,
>                     disconnected the two wires into 3^rd /4^th switch.
>                     Took the car for a spin. Up/down longish/steepish
>                     hills, 10 miles on motorway. Various rpm…..no
>                     slippage at all.
>                  2. Had a puncture…..nail in tyre. Rear RHS. Flat as a
>                     pancake at once. Nearly onto rim. Nail! I imagine
>                     the inner tube is shredded and the tyre may be a
>                     write-off. (Usually are!). Anyhow, I bore you with
>                     this as I’m convinced that I’d never have got the
>                     wheel off without the little scissors jack which I
>                     carry to get the car up the first few inches until
>                     the Healey jack comes into play. Just a suggestion…….
>                  3. Got home and jacked car up to test pressure.
>                     Steady at 520psi which, I recall, is plenty.
>                     Stayed at 520 across rev range. Dropped very
>                     slowly once engine was off and dropped to zero as
>                     I engaged/disengaged OD a few times. Which is
>                     normal I think?
>                  4. Solenoid makes a robust “click” when it should and
>                     engages the OD when activated.
>
>                 So what’s a sensible “Step 2”??
>
>                 I have been urged to check the setting of the Throttle
>                 Switch (TS). Assuming that the slippage returns (and
>                 why wouldn’t it?), I’ll short the TS out to see if
>                 that fixes it. If it does, I’ll check the adjustment.
>
>                 Suggestions would be more than welcome……I do dread
>                 having to take that box out again. I’ve got a very
>                 adequate ramp and a very strong volunteer(?) but,
>                 regardless of all that, it’s still quite a task. And,
>                 like a few of us, I’m not as young as I once was. I’ve
>                 always enjoyed the lines from the manual which I
>                 reproduce, below. ���Gently ease”!?!
>
>                 Thanks, Simon
>
>                 *From:*Michael Salter <[email-masked]>
>                 *Sent:* Monday, April 22, 2024 3:21 PM
>                 *To:* Simon Lachlan <[email-masked]>
>                 *Cc:* Healeys <[email-masked]>
>                 *Subject:* Re: [Healeys] Overdrive pressure or clutch slip
>
>                 *_Correct diagnosis is 1/2 the repair!!_*
>
>                 First you need to confirm whether the clutch (on the
>                 flywheel) or the overdrive is causing the slippage.
>
>                 To do this you ABSOLUTELY MUST disable the overdrive
>                 as a badly misadjuster overdrive operating valve can
>                 produce similar symptoms.
>
>                 To do this I would remove the overdrive operating
>                 valve completely. (There are other ways but this is
>                 absolutely definitive).
>
>                 Now drive the car up a long hill where you are amle to
>                 use full throttle at around 3000 RPM (maximum torque)
>                 for a few seconds. If it is the clutch (on the
>                 flywheel) that is causing the slippage these operating
>                 conditions. Test this a few times to be sure.
>
>                 If there is no slippage we have confirmed that the
>                 overdrive clutch is at fault.
>
>                 Step 1 completed. Please report results. MS.
>
>                     On Mon., Apr. 22, 2024, 8:08 a.m. Simon Lachlan
>                     via Healeys, <[email-masked]> wrote:
>
>                         You may recall the very extended overdrive and
>                         clutch saga last year. Long story short(ish)…
>
>                         OD was slipping in and out depending on oil
>                         temperature.
>
>                         Correctly diagnosed pressure. Checked with gauge.
>
>                         Attempted rebuild…going only so far as
>                         accumulator and related seals.
>
>                         Stymied as could not get pump out. Turned out
>                         to have been “fixed” at some stage with some
>                         form of “chemical metal” which was coming
>                         loose/apart.
>
>                         Took it up to OD Spares who fixed it..new
>                         housing etcetc
>
>                         Why not a new clutch I thought? Sensible while
>                         you’re in the area looking at a 30+ yr old item.
>
>                         New clutch…no good. Noisy, wouldn’t
>                         engage/disengage/play at all.
>
>                         Gearbox out again.
>
>                         Refit clutch. Presumed I’d made some
>                         beginner’s mistake.
>
>                         Refit gearbox…no good. Same
>
>                         Can’t recall whether I tried again. Lost count
>                         and enthusiasm by now.
>
>                         Turned out that the new clutch kit was
>                         defective. (Thanks Mirek) (Genuine B&B from
>                         AHSpares).
>
>                         New one did work.
>
>                         Saga over until yesterday.
>
>                         Same sort of symptoms…..
>
>                         All’s well for first 10 or so miles. Then the
>                         dreaded slippage(?) starts. But it’s not quite
>                         the same. Reminds me more of a slipping
>                         clutch. (But NO smell)
>
>                         Symptoms continue if it’s in or out of OD.
>
>                         Symptoms reduce at speed.
>
>                         Yes, plenty of oil. Over the full mark. Looks
>                         very clean. Pretty sure it’s 40wt
>                         non-detergent topped up with 30wt
>                         non-detergent. (Or vice-versa). Am confident
>                         in state of the filter, magnets etc.
>
>                         No, I have not pressure tested it yet and yes,
>                         I dread restarting the whole bloody process
>                         all over again. I’m not sure I can face taking
>                         the box out again once, let alone multiple times.
>
>                         What I want and experience tells me I’m
>                         unlikely to get is a miracle cure!
>
>                         One initial question…..do OD relays either
>                         work or not work? ie, can the relay hover
>                         between on and off which might lead to the OD
>                         coming in and out? I think that could happen
>                         if the switch is off but the unit still hasn’t
>                         got the message to disengage from the bulkhead
>                         switch.
>
>                         And a supplementary….how do I bench test the
>                         relay?
>
>                         Simon
>
>
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    I lost the plot (not unusual): Have we determined, for sure, that
    the problem is 'slippage,' which would most likely be due to wear in
    the O/D cone clutch? Or have we determined that Simon's O/D is
    'dropping out' which, to my thinking, would be caused by the 8
    strong springs overcoming hydraulic pressure (and causing the brake
    ring to slip or disengage, no?). <br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 4/26/2024 10:03 AM, Hank Leach
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:[email-masked]">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div>Ok the pressure gauge implies that the hydraulic system is in
        good condition and that will effectively produce overdrive when
        the cone clutch is pushed forward in the box. When OD is <strong>not
          required</strong> the solenoid is inactive and the 8 springs
        in the unit have to keep the cone clutch in the rearward or in
        direct drive position.</div>
      <div>These are stout springs and normally are strong enough to
        engage and hold the clutch without slipping, overcoming the
        hydraulic influence-which should be draining at this
        point..However if the springs are misinstalled in the wrong
        position or not properly mounted on their tabs upon assembly or
        previously "coil bound" from that procedure or wear, they will
        not function to keep direct drive solid without slipping.</div>
      <div>The clutch material should outlive all of us and is not
        normally, or easily, replaced. All you have to keep the car in
        direct drive are those 8 springs and their pressure.<br>
        -Hate to say it but if the re-assembly was defective, the
        gearbox needs to come out and OD removed and checked for correct
        spring fit-at that time I would replace the 8 springs (about
        $100 from Moss) as a routine repair. (photos from my article in
        AH Mag) Hank<br>
        <br>
        From: "Bob Spidell" <a class="moz-txt-link-rfc2396E" href="mailto:[email-masked]">&lt;[email-masked]&gt;</a> <br>
        To: <a class="moz-txt-link-rfc2396E" href="mailto:[email-masked]">&lt;[email-masked]&gt;</a> <br>
        Sent: April 26, 2024 at 9:37 AM PDT <br>
        Subject: Re: [Healeys] Overdrive pressure or clutch slip Step 2!
        <br>
        Spitballing ...<br>
        <br>
        I went through my BJ8's O/D a few years ago. The car had 64K
        miles on it when I bought it (approx. 1984), and about 215K*
        miles on it when I did the overhaul. The O/D cone clutch was
        serviceable--and AFAIK didn't slip--and I reinstalled it. If new
        cone clutches were readily available I <em>might</em> have
        bought new, on principle, depending on cost, but all I could
        find was a re-manned one from DWM. To me this implied they
        didn't often need replacement, whereas known wear items like the
        accumulator are offered by several vendors (I would have
        installed one with an O-ring if I'd known about it).<br>
        <br>
        All this to say, unless the car has extremely high mileage
        and/or the O/D has been abused somehow I'd be surprised if the
        clutch is worn 'to the bone.' Obviously, slippage in the cone
        clutch would cause Simon's car's symptoms; if so, the problem
        will get progressively worse (and more consistent). I think one
        way to test an O/D clutch would be to really lug the car pulling
        an uphill grade in 4th-O/D, if the clutch is going to slip it
        would do it then (as would a worn engine clutch). There's also a
        (remote) possibility that, for some reason, O/D pressure
        fluctuates during driving.<br>
        <br>
        <br>
        * Anyone else have this many or more known miles on a Healey?<br>
        <br>
        bs<br>
        <br>
        <br>
        <br>
      </div>
      <div class="moz-cite-prefix">On 4/26/2024 4:51 AM, Michael Salter
        wrote:</div>
      <blockquote>
        <div>
          <div><span
style="font-family: 'times new roman',serif; font-size: 12.8px;">"What I
              can’t do is understand the leap to the OD cone clutch?"</span></div>
          <div><span
style="font-family: 'times new roman',serif; font-size: 12.8px;"> </span></div>
          <div><span
style="font-family: 'times new roman',serif; font-size: 12.8px;"> Fair
              question.</span></div>
          <div><span
style="font-family: 'times new roman',serif; font-size: 12.8px;">Between
              the flywheel and the rear wheels there are only 2 places
              where "slippage" can occur these are the clutch and the
              overdrive's cone clutch. </span></div>
          <div><span
style="font-family: 'times new roman',serif; font-size: 12.8px;">The
              gearbox, other than the cone clutch in the overdrive, is a
              go/no go arrangement, i.e. no "slippage".</span></div>
          <div><span
style="font-family: 'times new roman',serif; font-size: 12.8px;">The
              rear wheel splines, believe it or not, can also produce
              "slippage " if they are in really bad condition but I
              presume that isn't the case here.</span></div>
          <div><span
style="font-family: 'times new roman',serif; font-size: 12.8px;"> </span></div>
          <div><span
style="font-family: 'times new roman',serif; font-size: 12.8px;">The
              test that you just completed resulted in no driveline
              slippage when the overdrive was disabled. </span></div>
          <div><span
style="font-family: 'times new roman',serif; font-size: 12.8px;">You are
              reporting slippage when the overdrive operating system is
              enabled so it follows that further diagnosis of that is
              required.</span></div>
          <div><span
style="font-family: 'times new roman',serif; font-size: 12.8px;"> </span></div>
          <div><span style="font-size: 12.8px;">Yes, your next step
              would be the same test drive, i.e. full engine torque on
              an uphill grade, to confirm that the slippage issue has
              returned now that the overdriveoperating valvehasbe
              re-installed.  </span></div>
          <div><span style="font-size: 12.8px;">I would do this test
              drive BEFORE making any adjustments to the overdrive valve
              or solenoid in order to confirm that meerly installing the
              overdrive operating valve resulted in the slippage issue
              returning. </span></div>
          <div><span style="font-size: 12.8px;">Hope the weather
              improves, beautiful day here.</span></div>
          <div><span style="font-size: 12.8px;">M</span></div>
        </div>
        <br>
        <div class="gmail_quote">
          <div class="gmail_attr">On Fri., Apr. 26, 2024, 7:24 a.m.
            Simon Lachlan, &lt;<a class="moz-txt-link-freetext"
              href="mailto:[email-masked]"
              target="_blank" rel="noopener" moz-do-not-send="true">[email-masked]</a>&gt;
            wrote:</div>
          <blockquote class="gmail_quote"
style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;">
            <div style="word-wrap: break-word;">
              <div>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">Hi,
                    Thanks for this.</span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">Not
                    sure I understand fully. </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">Once
                    I’d finished the test drive with the OD operating
                    valve out of the car, I returned the rod, ball,
                    spring etc and put in the gauge rather than the nut.
                    And got 500+ psi. </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">What I
                    can’t do is understand the leap to the OD cone
                    clutch. Not arguing…just saying no comprende. As I
                    sat in the car, I was thinking that the function of
                    the OD seems OK and that it’s being interfered with
                    by something in its circuitry……relay, solenoid or
                    throttle switch. That’s probably wishful thinking as
                    I really don’t want to be swimming in those waters.</span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;"> </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">I did,
                    as a matter of course, clean out the tiny hole in
                    the rod but didn’t detect any blockage….which
                    doesn’t mean much as something minute could have
                    been inside and been washed away by the
                    detergent/hot water then WD40…..</span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;"> </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">After
                    someone’s advice – some time back – I’ve got another
                    rod whose aperture has been drilled out to 1.5mm.
                    This was “to allow the OD to disengage faster”.
                    Don’t recall if I tried it. Could that rod be any
                    help here?</span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;"> </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">The
                    ball seems to be sitting square on its seat and the
                    tip of the rod, where the ball sits, is not worn or
                    chipped.</span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">Residual
                    pressure….. goes to 500+ when I switch OD ON and
                    stays there until, engine and switch OFF, I energize
                    the solenoid a few times whereupon it drops to zero.</span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;"> </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">Another
                    test drive(s) seems called for. But the hood is off
                    to enable access and the forecast is grim for the
                    next week.</span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;"> </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">Very
                    open to more suggestions. Thanks,</span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;">Simon</span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;"> </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;"> </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;"> </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;"> </span></p>
                <p class="MsoNormal"><span
                    style="font-family: 'Times New Roman',serif;"> </span></p>
                <div
style="border: none; border-top: solid #e1e1e1 1.0pt; padding: 3.0pt 0cm 0cm 0cm;">
                  <p class="MsoNormal"><strong><span
style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;">From:</span></strong><span
style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;"> Michael
                      Salter &lt;<a class="moz-txt-link-freetext"
                        href="mailto:[email-masked]"
                        target="_blank" rel="noopener"
                        moz-do-not-send="true">[email-masked]</a>&gt;
                      <br>
                      <strong>Sent:</strong> Friday, April 26, 2024
                      12:14 AM<br>
                      <strong>To:</strong> Simon Lachlan &lt;<a
                        class="moz-txt-link-freetext"
                        href="mailto:[email-masked]"
                        target="_blank" rel="noopener"
                        moz-do-not-send="true">[email-masked]</a>&gt;<br>
                      <strong>Cc:</strong> Healeys &lt;<a
                        class="moz-txt-link-freetext"
                        href="mailto:[email-masked]"
                        target="_blank" rel="noopener"
                        moz-do-not-send="true">[email-masked]</a>&gt;<br>
                      <strong>Subject:</strong> Re: Overdrive pressure
                      or clutch slip Step 2!</span></p>
                </div>
                <p class="MsoNormal"> </p>
                <div>
                  <p class="MsoNormal">Okay, then it is confirmed that
                    neither the clutch (on the flywheel) nor the
                    overdrive cone clutch (in it's normal drive
                    condition) are producing the slippage. </p>
                  <div>
                    <p class="MsoNormal">From this we can conclude that
                      even when the overdrive solenoid is <strong><u>not</u></strong>
                      energized the slippage is occurring at the
                      overdrive cone clutch and that for some reason
                      hydraulic pressure is finding its way into the
                      overdrive operating cylinders even when the
                      overdrive operating valve is closed.</p>
                  </div>
                  <div>
                    <p class="MsoNormal">This can be caused by leakage
                      past operating the valve or residual pressure.</p>
                  </div>
                  <div>
                    <p class="MsoNormal">The question of residual
                      pressure can be resolved by checking that the
                      bleed hole in the bottom of the long overdrive
                      valve push rod is not blocked.</p>
                  </div>
                  <div>
                    <p class="MsoNormal">Whether or not hydraulic
                      pressure is leaking past the operating valve ball
                      can be checked by ensuring that the ball is
                      clearly on its seat when the operating valve is <strong><u>not </u></strong> energized.</p>
                  </div>
                  <div>
                    <p class="MsoNormal"> </p>
                  </div>
                  <div>
                    <p class="MsoNormal">M</p>
                  </div>
                </div>
                <p class="MsoNormal"> </p>
                <div>
                  <div>
                    <p class="MsoNormal">On Thu., Apr. 25, 2024, 3:38
                      p.m. Simon Lachlan, &lt;<a
                        class="moz-txt-link-freetext"
                        href="mailto:[email-masked]"
                        target="_blank" rel="noopener"
                        moz-do-not-send="true">[email-masked]</a>&gt;
                      wrote:</p>
                  </div>
                  <blockquote
style="border: none; border-left: solid #cccccc 1.0pt; padding: 0cm 0cm 0cm 6.0pt; margin-left: 4.8pt; margin-right: 0cm;">
                    <div>
                      <div>
                        <p class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;">Of course. Isn’t that how
                            I got the 520psi?</span></p>
                        <p class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;"> </span></p>
                        <div
style="border: none; border-top: solid #e1e1e1 1.0pt; padding: 3.0pt 0cm 0cm 0cm;">
                          <p class="MsoNormal"><strong><span
style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;">From:</span></strong><span
style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;"> Michael
                              Salter &lt;<a
                                class="moz-txt-link-freetext"
                                href="mailto:[email-masked]"
                                target="_blank" rel="noopener"
                                moz-do-not-send="true">[email-masked]</a>&gt;
                              <br>
                              <strong>Sent:</strong> Thursday, April 25,
                              2024 6:19 PM<br>
                              <strong>To:</strong> Simon Lachlan &lt;<a
                                class="moz-txt-link-freetext"
href="mailto:[email-masked]" target="_blank"
                                rel="noopener" moz-do-not-send="true">[email-masked]</a>&gt;<br>
                              <strong>Cc:</strong> Healeys &lt;<a
                                class="moz-txt-link-freetext"
                                href="mailto:[email-masked]"
                                target="_blank" rel="noopener"
                                moz-do-not-send="true">[email-masked]</a>&gt;<br>
                              <strong>Subject:</strong> Re: Overdrive
                              pressure or clutch slip Step 2!</span></p>
                        </div>
                        <p class="MsoNormal"> </p>
                        <div>
                          <p class="MsoNormal">Question  ... when you
                            got home and did the pressure test I presume
                            that was AFTER you had put the valve with
                            the "top hat", ball, spring and valve rod
                            cap and washer back into position?</p>
                          <div>
                            <p class="MsoNormal"> </p>
                          </div>
                          <div>
                            <p class="MsoNormal">M</p>
                            <div>
                              <p class="MsoNormal"> </p>
                            </div>
                            <div>
                              <p class="MsoNormal"> </p>
                            </div>
                          </div>
                        </div>
                        <p class="MsoNormal"> </p>
                        <div>
                          <div>
                            <p class="MsoNormal">On Thu., Apr. 25, 2024,
                              12:29 p.m. Simon Lachlan, &lt;<a
                                class="moz-txt-link-freetext"
href="mailto:[email-masked]" target="_blank"
                                rel="noopener" moz-do-not-send="true">[email-masked]</a>&gt;
                              wrote:</p>
                          </div>
                          <blockquote
style="border: none; border-left: solid #cccccc 1.0pt; padding: 0cm 0cm 0cm 6.0pt; margin: 5.0pt 0cm 5.0pt 4.8pt;">
                            <div>
                              <div>
                                <p class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;">So, here is Michael’s
                                    “Step 1” completed. (See his email,
                                    below).</span></p>
                                <ol>
                                  <li class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;">Removed the operating
                                      valve and, just for luck,
                                      disconnected the two wires into 3<sup>rd</sup>/4<sup>th</sup>
                                      switch. Took the car for a spin.
                                      Up/down longish/steepish hills, 10
                                      miles on motorway. Various
                                      rpm…..no slippage at all.</span></li>
                                  <li class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;">Had a puncture…..nail in
                                      tyre. Rear RHS. Flat as a pancake
                                      at once. Nearly onto rim. Nail! I
                                      imagine the inner tube is shredded
                                      and the tyre may be a write-off.
                                      (Usually are!). Anyhow, I bore you
                                      with this as I’m convinced that
                                      I’d never have got the wheel off
                                      without the little scissors jack
                                      which I carry to get the car up
                                      the first few inches until the
                                      Healey jack comes into play. Just
                                      a suggestion…….</span></li>
                                  <li class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;">Got home and jacked car up
                                      to test pressure. Steady at 520psi
                                      which, I recall, is plenty. Stayed
                                      at 520 across rev range. Dropped
                                      very slowly once engine was off
                                      and dropped to zero as I
                                      engaged/disengaged OD a few times.
                                      Which is normal I think?</span></li>
                                  <li class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;">Solenoid makes a robust
                                      “click” when it should and engages
                                      the OD when activated.</span></li>
                                </ol>
                                <p class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;">So what’s a sensible “Step
                                    2”??</span></p>
                                <p class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;">I have been urged to check
                                    the setting of the Throttle Switch
                                    (TS). Assuming that the slippage
                                    returns (and why wouldn’t it?), I’ll
                                    short the TS out to see if that
                                    fixes it. If it does, I’ll check the
                                    adjustment.</span></p>
                                <p class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;">Suggestions would be more
                                    than welcome……I do dread having to
                                    take that box out again. I’ve got a
                                    very adequate ramp and a very strong
                                    volunteer(?) but, regardless of all
                                    that, it’s still quite a task. And,
                                    like a few of us, I’m not as young
                                    as I once was. I’ve always enjoyed
                                    the lines from the manual which I
                                    reproduce, below. ���Gently ease”!?!
                                  </span></p>
                                <p class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;"> </span></p>
                                <p class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;">Thanks, Simon</span></p>
                                <p class="MsoNormal"><span
style="font-family: 'Times New Roman',serif;"> </span></p>
                                <div
style="border: none; border-top: solid #e1e1e1 1.0pt; padding: 3.0pt 0cm 0cm 0cm;">
                                  <p class="MsoNormal"><strong><span
style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;">From:</span></strong><span
style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;"> Michael
                                      Salter &lt;<a
                                        class="moz-txt-link-freetext"
href="mailto:[email-masked]" target="_blank" rel="noopener"
                                        moz-do-not-send="true">[email-masked]</a>&gt;
                                      <br>
                                      <strong>Sent:</strong> Monday,
                                      April 22, 2024 3:21 PM<br>
                                      <strong>To:</strong> Simon Lachlan
                                      &lt;<a
                                        class="moz-txt-link-freetext"
href="mailto:[email-masked]" target="_blank"
                                        rel="noopener"
                                        moz-do-not-send="true">[email-masked]</a>&gt;<br>
                                      <strong>Cc:</strong> Healeys &lt;<a
                                        class="moz-txt-link-freetext"
href="mailto:[email-masked]" target="_blank" rel="noopener"
                                        moz-do-not-send="true">[email-masked]</a>&gt;<br>
                                      <strong>Subject:</strong> Re:
                                      [Healeys] Overdrive pressure or
                                      clutch slip</span></p>
                                </div>
                                <p class="MsoNormal"> </p>
                                <div>
                                  <div>
                                    <p class="MsoNormal"><strong><u>Correct
                                          diagnosis is 1/2 the repair!!</u></strong></p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal"> </p>
                                  </div>
                                  <p class="MsoNormal">First you need to
                                    confirm whether the clutch (on the
                                    flywheel) or the overdrive is
                                    causing the slippage. </p>
                                  <div>
                                    <p class="MsoNormal">To do this you
                                      ABSOLUTELY MUST disable the
                                      overdrive as a badly misadjuster
                                      overdrive operating valve can
                                      produce similar symptoms. </p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal">To do this I
                                      would remove the overdrive
                                      operating valve completely. (There
                                      are other ways but this is
                                      absolutely definitive).</p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal">Now drive the
                                      car up a long hill where you are
                                      amle to use full throttle at
                                      around 3000 RPM (maximum torque)
                                      for a few seconds. If it is the
                                      clutch (on the flywheel) that is
                                      causing the slippage these
                                      operating conditions. Test this a
                                      few times to be sure.</p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal">If there is no
                                      slippage we have confirmed that
                                      the overdrive clutch is at fault.</p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal"> </p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal">Step 1
                                      completed. Please report
                                      results. MS.</p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal"> </p>
                                  </div>
                                  <div>
                                    <p class="MsoNormal"> </p>
                                  </div>
                                </div>
                                <p class="MsoNormal"> </p>
                                <div>
                                  <blockquote
style="border: none; border-left: solid #cccccc 1.0pt; padding: 0cm 0cm 0cm 6.0pt; margin: 5.0pt 0cm 5.0pt 4.8pt;">
                                    <div>
                                      <div>
                                        <p class="MsoNormal">On Mon.,
                                          Apr. 22, 2024, 8:08 a.m. Simon
                                          Lachlan via Healeys, &lt;<a
class="moz-txt-link-freetext" href="mailto:[email-masked]"
                                            target="_blank"
                                            rel="noopener"
                                            moz-do-not-send="true">[email-masked]</a>&gt;
                                          wrote:</p>
                                      </div>
                                      <blockquote
style="border: none; border-left: solid #cccccc 1.0pt; padding: 0cm 0cm 0cm 6.0pt; margin: 5.0pt 0cm 5.0pt 4.8pt;">
                                        <div>
                                          <p><span
style="font-family: 'Times New Roman',serif;">You may recall the very
                                              extended overdrive and
                                              clutch saga last year.</span>
                                            <span
style="font-family: 'Times New Roman',serif;">Long story short(ish)…</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">OD was slipping in and out
                                              depending on oil
                                              temperature.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Correctly diagnosed
                                              pressure. Checked with
                                              gauge.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Attempted rebuild…going
                                              only so far as</span> <span
style="font-family: 'Times New Roman',serif;">accumulator and related
                                              seals.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Stymied as could not get
                                              pump out. Turned out to
                                              have been “fixed” at some
                                              stage with some form of
                                              “chemical metal” which was
                                              coming loose/apart.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Took it up to OD Spares
                                              who fixed it..new housing
                                              etcetc</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Why not a new clutch I
                                              thought? Sensible while
                                              you’re in the area looking
                                              at a 30+ yr old item.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">New clutch…no good. Noisy,
                                              wouldn’t</span> <span
style="font-family: 'Times New Roman',serif;">engage/disengage/play at
                                              all.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Gearbox out again.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Refit clutch. Presumed I’d
                                              made some beginner’s
                                              mistake.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Refit gearbox…no good.
                                              Same</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Can’t recall whether I
                                              tried again. Lost count
                                              and enthusiasm by now.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Turned out that the new
                                              clutch kit was defective.
                                              (Thanks Mirek) (Genuine
                                              B&amp;B from AHSpares).</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">New one did work.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Saga over until yesterday.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Same sort of symptoms…..</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">All’s well for first 10 or
                                              so miles. Then the dreaded
                                              slippage(?) starts. But
                                              it’s not quite the same.
                                              Reminds me more of a
                                              slipping clutch. (But NO
                                              smell)</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Symptoms continue if it’s
                                              in or out of OD.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Symptoms reduce at speed.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Yes, plenty of oil. Over
                                              the full mark. Looks very
                                              clean. Pretty sure it’s
                                              40wt</span> <span
style="font-family: 'Times New Roman',serif;">non-detergent topped up
                                              with 30wt non-detergent.
                                              (Or vice-versa).</span> <span
style="font-family: 'Times New Roman',serif;">Am confident in state of
                                              the filter, magnets etc.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">No, I have not pressure
                                              tested it yet and yes, I
                                              dread restarting the whole
                                              bloody process all over
                                              again. I’m not sure I can
                                              face taking the box out
                                              again once, let alone
                                              multiple times.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">What I want and experience
                                              tells me I’m unlikely to
                                              get is a miracle cure!</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">One initial question…..do
                                              OD relays either work or
                                              not work? ie, can the
                                              relay hover between on and
                                              off</span> <span
style="font-family: 'Times New Roman',serif;">which might lead to the OD
                                              coming in and out? I think
                                              that could happen if the
                                              switch is off but the unit
                                              still hasn’t got the
                                              message to disengage from
                                              the bulkhead switch.</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">And a supplementary….how</span>
                                            <span
style="font-family: 'Times New Roman',serif;">do I bench test</span> <span
style="font-family: 'Times New Roman',serif;">the relay?</span></p>
                                          <p><span
style="font-family: 'Times New Roman',serif;">Simon</span></p>
                                        </div>
                                      </blockquote>
                                    </div>
                                  </blockquote>
                                </div>
                              </div>
                            </div>
                          </blockquote>
                        </div>
                      </div>
                    </div>
                  </blockquote>
                </div>
              </div>
            </div>
          </blockquote>
        </div>
        <br>
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---

From: Michael Salter <[email-masked]>
Date: Fri, 26 Apr 2024 15:02:26 -0400

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With all due respects Hank you have this backwards.

.*However if the springs are misinstalled in the wrong position or not
properly mounted on their tabs upon assembly or previously "coil bound"
from that procedure or wear, they will not function to keep direct drive
solid without slipping*.

If the springs are installed incorrectly as in even one of them sitting on
top on the little posts, or even one long spring where a short is meant to
be, the unit will be solidly locked in "normal" i.e. non overdrive as there
never going to be enough hydraulic pressure to move a spring beyond "coil
bound".
Don't ask me how I know =F0=9F=98=B3

M

On Fri., Apr. 26, 2024, 1:07 p.m. Hank Leach via Healeys, <
[email-masked]> wrote:

> condition and that will effectively produce overdrive when the cone clutc=
h
> is pushed forward in the box. When OD is *not required* the solenoid is
> inactive and the 8 springs in the unit have to keep the cone clutch in th=
e
> rearward or in direct drive position.
> These are stout springs and normally are strong enough to engage and hold
> the clutch without slipping, overcoming the hydraulic influence-which
> should be draining at this point..However if the springs are misinstalled
> in the wrong position or not properly mounted on their tabs upon assembly
> or previously "coil bound" from that procedure or wear, they will not
> function to keep direct drive solid without slipping.
> easily, replaced. All you have to keep the car in direct drive are those =
8
> springs and their pressure.
> -Hate to say it but if the re-assembly was defective, the gearbox needs t=
o
> come out and OD removed and checked for correct spring fit-at that time I
> would replace the 8 springs (about $100 from Moss) as a routine repair.
> (photos from my article in AH Mag) Hank
>
> I went through my BJ8's O/D a few years ago. The car had 64K miles on it
> when I bought it (approx. 1984), and about 215K* miles on it when I did t=
he
> overhaul. The O/D cone clutch was serviceable--and AFAIK didn't slip--and=
 I
> reinstalled it. If new cone clutches were readily available I *might*
> have bought new, on principle, depending on cost, but all I could find wa=
s
> a re-manned one from DWM. To me this implied they didn't often need
> replacement, whereas known wear items like the accumulator are offered by
> several vendors (I would have installed one with an O-ring if I'd known
> about it).
>
> All this to say, unless the car has extremely high mileage and/or the O/D
> has been abused somehow I'd be surprised if the clutch is worn 'to the
> bone.' Obviously, slippage in the cone clutch would cause Simon's car's
> symptoms; if so, the problem will get progressively worse (and more
> consistent). I think one way to test an O/D clutch would be to really lug
> the car pulling an uphill grade in 4th-O/D, if the clutch is going to sli=
p
> it would do it then (as would a worn engine clutch). There's also a
> (remote) possibility that, for some reason, O/D pressure fluctuates durin=
g
> driving.
> "What I can=E2=80=99t do is understand the leap to the OD cone clutch?"
>
>  Fair question.
> Between the flywheel and the rear wheels there are only 2 places where
> "slippage" can occur these are the clutch and the overdrive's cone clutch=
.
> The gearbox, other than the cone clutch in the overdrive, is a go/no go
> arrangement, i.e. no "slippage".
> The rear wheel splines, believe it or not, can also produce "slippage " i=
f
> they are in really bad condition but I presume that isn't the case here.
>
> The test that you just completed resulted in no driveline slippage when
> the overdrive was disabled.
> You are reporting slippage when the overdrive operating system is enabled
> so it follows that further diagnosis of that is required.
>
> Yes, your next step would be the same test drive, i.e. full engine torque
> on an uphill grade, to confirm that the slippage issue has returned now
> that the overdriveoperating valvehasbe re-installed.
> I would do this test drive BEFORE making any adjustments to the overdrive
> valve or solenoid in order to confirm that meerly installing the overdriv=
e
> operating valve resulted in the slippage issue returning.
> On Fri., Apr. 26, 2024, 7:24 a.m. Simon Lachlan, <
> [email-masked]> wrote:
>
>> Hi, Thanks for this.
>>
>> Once I=E2=80=99d finished the test drive with the OD operating valve out=
 of the
>> car, I returned the rod, ball, spring etc and put in the gauge rather th=
an
>> the nut. And got 500+ psi.
>>
>> What I can=E2=80=99t do is understand the leap to the OD cone clutch. No=
t
>> arguing=E2=80=A6just saying no comprende. As I sat in the car, I was thi=
nking that
>> the function of the OD seems OK and that it=E2=80=99s being interfered w=
ith by
>> something in its circuitry=E2=80=A6=E2=80=A6relay, solenoid or throttle =
switch. That=E2=80=99s
>> probably wishful thinking as I really don=E2=80=99t want to be swimming =
in those
>> waters.
>>
>>
>>
>> I did, as a matter of course, clean out the tiny hole in the rod but
>> didn=E2=80=99t detect any blockage=E2=80=A6.which doesn=E2=80=99t mean m=
uch as something minute
>> could have been inside and been washed away by the detergent/hot water t=
hen
>> WD40=E2=80=A6..
>>
>>
>>
>> After someone=E2=80=99s advice =E2=80=93 some time back =E2=80=93 I=E2=
=80=99ve got another rod whose
>> aperture has been drilled out to 1.5mm. This was =E2=80=9Cto allow the O=
D to
>> disengage faster=E2=80=9D. Don=E2=80=99t recall if I tried it. Could tha=
t rod be any help
>> here?
>>
>>
>>
>> The ball seems to be sitting square on its seat and the tip of the rod,
>> where the ball sits, is not worn or chipped.
>>
>> Residual pressure=E2=80=A6.. goes to 500+ when I switch OD ON and stays =
there
>> until, engine and switch OFF, I energize the solenoid a few times whereu=
pon
>> it drops to zero.
>>
>>
>>
>> Another test drive(s) seems called for. But the hood is off to enable
>> access and the forecast is grim for the next week.
>>
>>
>>
>> *From:* Michael Salter <[email-masked]>
>> Okay, then it is confirmed that neither the clutch (on the flywheel) nor
>> the overdrive cone clutch (in it's normal drive condition) are producing
>> the slippage.
>>
>> From this we can conclude that even when the overdrive solenoid is *not*
>> energized the slippage is occurring at the overdrive cone clutch and tha=
t
>> for some reason hydraulic pressure is finding its way into the overdrive
>> operating cylinders even when the overdrive operating valve is closed.
>>
>> This can be caused by leakage past operating the valve or residual
>> pressure.
>>
>> The question of residual pressure can be resolved by checking that the
>> bleed hole in the bottom of the long overdrive valve push rod is not
>> blocked.
>>
>> Whether or not hydraulic pressure is leaking past the operating valve
>> ball can be checked by ensuring that the ball is clearly on its seat whe=
n
>> the operating valve is *not * energized.
>>
>>
>>
>> M
>>
>>
>>
>> On Thu., Apr. 25, 2024, 3:38 p.m. Simon Lachlan, <
>> [email-masked]> wrote:
>>
>> Of course. Isn=E2=80=99t that how I got the 520psi?
>>
>>
>>
>> *From:* Michael Salter <[email-masked]>
>> Question  ... when you got home and did the pressure test I presume that
>> was AFTER you had put the valve with the "top hat", ball, spring and val=
ve
>> rod cap and washer back into position?
>>
>>
>>
>> M
>>
>>
>>
>>
>>
>>
>>
>> On Thu., Apr. 25, 2024, 12:29 p.m. Simon Lachlan, <
>> [email-masked]> wrote:
>>
>> So, here is Michael=E2=80=99s =E2=80=9CStep 1=E2=80=9D completed. (See h=
is email, below).
>>
>>    1. Removed the operating valve and, just for luck, disconnected the
>>    two wires into 3rd/4th switch. Took the car for a spin. Up/down
>>    longish/steepish hills, 10 miles on motorway. Various rpm=E2=80=A6..n=
o slippage at
>>    all.
>>    2. Had a puncture=E2=80=A6..nail in tyre. Rear RHS. Flat as a pancake=
 at
>>    once. Nearly onto rim. Nail! I imagine the inner tube is shredded and=
 the
>>    tyre may be a write-off. (Usually are!). Anyhow, I bore you with this=
 as
>>    I=E2=80=99m convinced that I=E2=80=99d never have got the wheel off w=
ithout the little
>>    scissors jack which I carry to get the car up the first few inches un=
til
>>    the Healey jack comes into play. Just a suggestion=E2=80=A6=E2=80=A6.
>>    3. Got home and jacked car up to test pressure. Steady at 520psi
>>    which, I recall, is plenty. Stayed at 520 across rev range. Dropped v=
ery
>>    slowly once engine was off and dropped to zero as I engaged/disengage=
d OD a
>>    few times. Which is normal I think?
>>    4. Solenoid makes a robust =E2=80=9Cclick=E2=80=9D when it should and=
 engages the OD
>>    when activated.
>>
>> So what=E2=80=99s a sensible =E2=80=9CStep 2=E2=80=9D??
>>
>> I have been urged to check the setting of the Throttle Switch (TS).
>> Assuming that the slippage returns (and why wouldn=E2=80=99t it?), I=E2=
=80=99ll short the
>> TS out to see if that fixes it. If it does, I=E2=80=99ll check the adjus=
tment.
>>
>> Suggestions would be more than welcome=E2=80=A6=E2=80=A6I do dread havin=
g to take that
>> box out again. I=E2=80=99ve got a very adequate ramp and a very strong v=
olunteer(?)
>> but, regardless of all that, it=E2=80=99s still quite a task. And, like =
a few of
>> us, I=E2=80=99m not as young as I once was. I=E2=80=99ve always enjoyed =
the lines from the
>> manual which I reproduce, below. =EF=BF=BD=EF=BF=BD=EF=BF=BDGently ease=
=E2=80=9D!?!
>>
>>
>>
>> Thanks, Simon
>>
>>
>>
>> *From:* Michael Salter <[email-masked]>
>> *Correct diagnosis is 1/2 the repair!!*
>>
>>
>>
>> First you need to confirm whether the clutch (on the flywheel) or the
>> overdrive is causing the slippage.
>>
>> To do this you ABSOLUTELY MUST disable the overdrive as a badly
>> misadjuster overdrive operating valve can produce similar symptoms.
>>
>> To do this I would remove the overdrive operating valve completely.
>> (There are other ways but this is absolutely definitive).
>>
>> Now drive the car up a long hill where you are amle to use full throttle
>> at around 3000 RPM (maximum torque) for a few seconds. If it is the clut=
ch
>> (on the flywheel) that is causing the slippage these operating condition=
s.
>> Test this a few times to be sure.
>>
>> If there is no slippage we have confirmed that the overdrive clutch is a=
t
>> fault.
>> On Mon., Apr. 22, 2024, 8:08 a.m. Simon Lachlan via Healeys, <
>> [email-masked]> wrote:
>>
>> You may recall the very extended overdrive and clutch saga last year. Lo=
ng
>> story short(ish)=E2=80=A6
>>
>> OD was slipping in and out depending on oil temperature.
>>
>> Attempted rebuild=E2=80=A6going only so far as accumulator and related s=
eals.
>>
>> Stymied as could not get pump out. Turned out to have been =E2=80=9Cfixe=
d=E2=80=9D at
>> some stage with some form of =E2=80=9Cchemical metal=E2=80=9D which was =
coming loose/apart.
>>
>> Took it up to OD Spares who fixed it..new housing etcetc
>>
>> Why not a new clutch I thought? Sensible while you=E2=80=99re in the are=
a looking
>> at a 30+ yr old item.
>>
>> New clutch=E2=80=A6no good. Noisy, wouldn=E2=80=99t engage/disengage/pla=
y at all.
>>
>> Gearbox out again.
>>
>> Refit clutch. Presumed I=E2=80=99d made some beginner=E2=80=99s mistake.
>>
>> Refit gearbox=E2=80=A6no good. Same
>>
>> Can=E2=80=99t recall whether I tried again. Lost count and enthusiasm by=
 now.
>>
>> Turned out that the new clutch kit was defective. (Thanks Mirek) (Genuin=
e
>> B&B from AHSpares).
>> Same sort of symptoms=E2=80=A6..
>>
>> All=E2=80=99s well for first 10 or so miles. Then the dreaded slippage(?=
) starts.
>> But it=E2=80=99s not quite the same. Reminds me more of a slipping clutc=
h. (But NO
>> smell)
>>
>> Symptoms continue if it=E2=80=99s in or out of OD.
>>
>> Yes, plenty of oil. Over the full mark. Looks very clean. Pretty sure
>> it=E2=80=99s 40wt non-detergent topped up with 30wt non-detergent. (Or
>> vice-versa). Am confident in state of the filter, magnets etc.
>>
>> No, I have not pressure tested it yet and yes, I dread restarting the
>> whole bloody process all over again. I=E2=80=99m not sure I can face tak=
ing the box
>> out again once, let alone multiple times.
>>
>> What I want and experience tells me I=E2=80=99m unlikely to get is a mir=
acle cure!
>>
>> One initial question=E2=80=A6..do OD relays either work or not work? ie,=
 can the
>> relay hover between on and off which might lead to the OD coming in and
>> out? I think that could happen if the switch is off but the unit still
>> hasn=E2=80=99t got the message to disengage from the bulkhead switch.
>>
>> And a supplementary=E2=80=A6.how do I bench test the relay?
>>
>> Simon
>>
>>
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--00000000000032bf9c0617048c52
Content-Transfer-Encoding: quoted-printable

<div dir=3D"auto">With all due respects Hank you have this backwards.=C2=A0=
<div dir=3D"auto"><br></div><div dir=3D"auto"><span style=3D"font-size:12.8=
px">.<i>However if the springs are misinstalled in the wrong position or no=
t properly mounted on their tabs upon assembly or previously &quot;coil bou=
nd&quot; from that procedure or wear, they will not function to keep direct=
 drive solid without slipping</i>.</span><br></div><div dir=3D"auto"><br></=
div><div dir=3D"auto">If the springs are installed incorrectly as in even o=
ne of them sitting on top on the little posts, or even one long spring wher=
e a short is meant to be, the unit will be solidly locked in &quot;normal&q=
uot; i.e. non overdrive as there never going to be enough hydraulic pressur=
e to move a spring beyond &quot;coil bound&quot;.<br></div><div dir=3D"auto=
">Don&#39;t ask me how I know =F0=9F=98=B3</div><div dir=3D"auto"><br></div=
><div dir=3D"auto">M</div></div><br><div class=3D"gmail_quote"><div dir=3D"=
ltr" class=3D"gmail_attr">On Fri., Apr. 26, 2024, 1:07 p.m. Hank Leach via =
Healeys, &lt;<a href=3D"mailto:[email-masked]">[email-masked]=
et</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margi=
n:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>Ok the press=
ure gauge implies that the hydraulic system is in good condition and that w=
ill effectively produce overdrive when the cone clutch is pushed forward in=
 the box. When OD is <strong>not required</strong> the solenoid is inactive=
 and the 8 springs in the unit have to keep the cone clutch in the rearward=
 or in direct drive position.</div>
<div>These are stout springs and normally are strong enough to engage and h=
old the clutch without slipping, overcoming the hydraulic influence-which s=
hould be draining at this point..However if the springs are misinstalled in=
 the wrong position or not properly mounted on their tabs upon assembly or =
previously &quot;coil bound&quot; from that procedure or wear, they will no=
t function to keep direct drive solid without slipping.</div>
<div>The clutch material should outlive all of us and is not normally, or e=
asily, replaced. All you have to keep the car in direct drive are those 8 s=
prings and their pressure.<br>-Hate to say it but if the re-assembly was de=
fective, the gearbox needs to come out and OD removed and checked for corre=
ct spring fit-at that time I would replace the 8 springs (about $100 from M=
oss) as a routine repair. (photos from my article in AH Mag) Hank<br><br>Fr=
om: &quot;Bob Spidell&quot; &lt;<a href=3D"mailto:[email-masked]" tar=
get=3D"_blank" rel=3D"noreferrer">[email-masked]</a>&gt; <br>To: &lt;=
<a href=3D"mailto:[email-masked]" target=3D"_blank" rel=3D"noreferr=
er">[email-masked]</a>&gt; <br>Sent: April 26, 2024 at 9:37 AM PDT =
<br>Subject: Re: [Healeys] Overdrive pressure or clutch slip Step 2! <br>Sp=
itballing ...<br><br>I went through my BJ8&#39;s O/D a few years ago. The c=
ar had 64K miles on it when I bought it (approx. 1984), and about 215K* mil=
es on it when I did the overhaul. The O/D cone clutch was serviceable--and =
AFAIK didn&#39;t slip--and I reinstalled it. If new cone clutches were read=
ily available I <em>might</em> have bought new, on principle, depending on =
cost, but all I could find was a re-manned one from DWM. To me this implied=
 they didn&#39;t often need replacement, whereas known wear items like the =
accumulator are offered by several vendors (I would have installed one with=
 an O-ring if I&#39;d known about it).<br><br>All this to say, unless the c=
ar has extremely high mileage and/or the O/D has been abused somehow I&#39;=
d be surprised if the clutch is worn &#39;to the bone.&#39; Obviously, slip=
page in the cone clutch would cause Simon&#39;s car&#39;s symptoms; if so, =
the problem will get progressively worse (and more consistent). I think one=
 way to test an O/D clutch would be to really lug the car pulling an uphill=
 grade in 4th-O/D, if the clutch is going to slip it would do it then (as w=
ould a worn engine clutch). There&#39;s also a (remote) possibility that, f=
or some reason, O/D pressure fluctuates during driving.<br><br><br>* Anyone=
 else have this many or more known miles on a Healey?<br><br>bs<br><br><br>=
<br></div>
<div>On 4/26/2024 4:51 AM, Michael Salter wrote:</div>
<blockquote>
<div>
<div><span style=3D"font-family:&#39;times new roman&#39;,serif;font-size:1=
2.8px">&quot;What I can=E2=80=99t do is understand the leap to the OD cone =
clutch?&quot;</span></div>
<div><span style=3D"font-family:&#39;times new roman&#39;,serif;font-size:1=
2.8px">=C2=A0</span></div>
<div><span style=3D"font-family:&#39;times new roman&#39;,serif;font-size:1=
2.8px">=C2=A0Fair question.</span></div>
<div><span style=3D"font-family:&#39;times new roman&#39;,serif;font-size:1=
2.8px">Between the flywheel and the rear wheels there are only 2 places whe=
re &quot;slippage&quot; can occur these are the clutch and the overdrive&#3=
9;s cone clutch.=C2=A0</span></div>
<div><span style=3D"font-family:&#39;times new roman&#39;,serif;font-size:1=
2.8px">The gearbox, other than the cone clutch in the overdrive, is a go/no=
 go arrangement, i.e. no &quot;slippage&quot;.</span></div>
<div><span style=3D"font-family:&#39;times new roman&#39;,serif;font-size:1=
2.8px">The rear wheel splines, believe it or not, can also produce &quot;sl=
ippage &quot; if they are in really bad condition but I presume that isn&#3=
9;t the case here.</span></div>
<div><span style=3D"font-family:&#39;times new roman&#39;,serif;font-size:1=
2.8px">=C2=A0</span></div>
<div><span style=3D"font-family:&#39;times new roman&#39;,serif;font-size:1=
2.8px">The test that you just completed resulted in no driveline slippage w=
hen the overdrive was disabled.=C2=A0</span></div>
<div><span style=3D"font-family:&#39;times new roman&#39;,serif;font-size:1=
2.8px">You are reporting slippage when the overdrive operating system is en=
abled so it follows that further diagnosis of that is required.</span></div=
<div><span style=3D"font-family:&#39;times new roman&#39;,serif;font-size:1=
2.8px">=C2=A0</span></div>
<div><span style=3D"font-size:12.8px">Yes, your next step would be the same=
 test drive, i.e. full engine torque on an uphill grade, to confirm that th=
e slippage issue has returned now that the overdriveoperating valvehasbe re=
-installed.=C2=A0=C2=A0</span></div>
<div><span style=3D"font-size:12.8px">I would do this test drive BEFORE mak=
ing any adjustments to the overdrive valve or solenoid in order to confirm =
that meerly installing the overdrive operating valve resulted in the slippa=
ge issue returning.=C2=A0</span></div>
<div><span style=3D"font-size:12.8px">Hope the weather improves, beautiful =
day here.</span></div>
<div><span style=3D"font-size:12.8px">M</span></div>
</div>
<br>
<div class=3D"gmail_quote">
<div class=3D"gmail_attr">On Fri., Apr. 26, 2024, 7:24 a.m. Simon Lachlan, =
&lt;<a href=3D"mailto:[email-masked]" rel=3D"noopener no=
referrer" target=3D"_blank">[email-masked]</a>&gt; wrote=
:</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div style=3D"word-wrap:break-word">
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">Hi, Thanks for this.</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">Not sure I understand fully. </span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">Once I=E2=80=99d finished the test drive with the OD operating valv=
e out of the car, I returned the rod, ball, spring etc and put in the gauge=
 rather than the nut. And got 500+ psi. </span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">What I can=E2=80=99t do is understand the leap to the OD cone clutc=
h. Not arguing=E2=80=A6just saying no comprende. As I sat in the car, I was=
 thinking that the function of the OD seems OK and that it=E2=80=99s being =
interfered with by something in its circuitry=E2=80=A6=E2=80=A6relay, solen=
oid or throttle switch. That=E2=80=99s probably wishful thinking as I reall=
y don=E2=80=99t want to be swimming in those waters.</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">I did, as a matter of course, clean out the tiny hole in the rod bu=
t didn=E2=80=99t detect any blockage=E2=80=A6.which doesn=E2=80=99t mean mu=
ch as something minute could have been inside and been washed away by the d=
etergent/hot water then WD40=E2=80=A6..</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">After someone=E2=80=99s advice =E2=80=93 some time back =E2=80=93 I=
=E2=80=99ve got another rod whose aperture has been drilled out to 1.5mm. T=
his was =E2=80=9Cto allow the OD to disengage faster=E2=80=9D. Don=E2=80=99=
t recall if I tried it. Could that rod be any help here?</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">The ball seems to be sitting square on its seat and the tip of the =
rod, where the ball sits, is not worn or chipped.</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">Residual pressure=E2=80=A6.. goes to 500+ when I switch OD ON and s=
tays there until, engine and switch OFF, I energize the solenoid a few time=
s whereupon it drops to zero.</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">Another test drive(s) seems called for. But the hood is off to enab=
le access and the forecast is grim for the next week.</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">Very open to more suggestions. Thanks,</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">Simon</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><strong><span style=3D"font-size:11.0pt;font-family:=
&#39;Calibri&#39;,sans-serif">From:</span></strong><span style=3D"font-size=
:11.0pt;font-family:&#39;Calibri&#39;,sans-serif"> Michael Salter &lt;<a hr=
ef=3D"mailto:[email-masked]" rel=3D"noopener noreferrer" target=3D=
"_blank">[email-masked]</a>&gt; <br><strong>Sent:</strong> Friday,=
 April 26, 2024 12:14 AM<br><strong>To:</strong> Simon Lachlan &lt;<a href=
=3D"mailto:[email-masked]" rel=3D"noopener noreferrer" t=
arget=3D"_blank">[email-masked]</a>&gt;<br><strong>Cc:</=
strong> Healeys &lt;<a href=3D"mailto:[email-masked]" rel=3D"noopen=
er noreferrer" target=3D"_blank">[email-masked]</a>&gt;<br><strong>=
Subject:</strong> Re: Overdrive pressure or clutch slip Step 2!</span></p>
</div>
<p class=3D"MsoNormal">=C2=A0</p>
<div>
<p class=3D"MsoNormal">Okay, then it is confirmed that neither the clutch (=
on the flywheel) nor the overdrive cone clutch (in it&#39;s normal drive co=
ndition) are producing the slippage.=C2=A0</p>
<div>
<p class=3D"MsoNormal">From this we can conclude that even when the overdri=
ve solenoid is <strong><u>not</u></strong> energized=C2=A0the slippage is o=
ccurring at the overdrive cone clutch and that for some reason hydraulic pr=
essure is finding its way into the overdrive operating cylinders even when =
the overdrive operating valve is closed.</p>
</div>
<div>
<p class=3D"MsoNormal">This can be caused by leakage past operating the val=
ve or residual pressure.</p>
</div>
<div>
<p class=3D"MsoNormal">The question of residual pressure can be resolved by=
 checking that the bleed hole in the bottom of the long overdrive valve pus=
h rod is not blocked.</p>
</div>
<div>
<p class=3D"MsoNormal">Whether or not hydraulic pressure is leaking past th=
e operating valve ball can be checked by ensuring that the ball is clearly =
on its seat when the operating valve is <strong><u>not=C2=A0</u></strong>=
=C2=A0energized.</p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0</p>
</div>
<div>
<p class=3D"MsoNormal">M</p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0</p>
<div>
<div>
<p class=3D"MsoNormal">On Thu., Apr. 25, 2024, 3:38 p.m. Simon Lachlan, &lt=
;<a href=3D"mailto:[email-masked]" rel=3D"noopener noref=
errer" target=3D"_blank">[email-masked]</a>&gt; wrote:</=
p>
</div>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0c=
m 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">Of course. Isn=E2=80=99t that how I got the 520psi?</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><strong><span style=3D"font-size:11.0pt;font-family:=
&#39;Calibri&#39;,sans-serif">From:</span></strong><span style=3D"font-size=
:11.0pt;font-family:&#39;Calibri&#39;,sans-serif"> Michael Salter &lt;<a hr=
ef=3D"mailto:[email-masked]" rel=3D"noopener noreferrer" target=3D=
"_blank">[email-masked]</a>&gt; <br><strong>Sent:</strong> Thursda=
y, April 25, 2024 6:19 PM<br><strong>To:</strong> Simon Lachlan &lt;<a href=
=3D"mailto:[email-masked]" rel=3D"noopener noreferrer" t=
arget=3D"_blank">[email-masked]</a>&gt;<br><strong>Cc:</=
strong> Healeys &lt;<a href=3D"mailto:[email-masked]" rel=3D"noopen=
er noreferrer" target=3D"_blank">[email-masked]</a>&gt;<br><strong>=
Subject:</strong> Re: Overdrive pressure or clutch slip Step 2!</span></p>
</div>
<p class=3D"MsoNormal">=C2=A0</p>
<div>
<p class=3D"MsoNormal">Question=C2=A0 ... when you got home and did the pre=
ssure test I presume that was AFTER you had put the valve with the &quot;to=
p hat&quot;, ball, spring and valve rod cap and washer back into position?<=
/p>
<div>
<p class=3D"MsoNormal">=C2=A0</p>
</div>
<div>
<p class=3D"MsoNormal">M</p>
<div>
<p class=3D"MsoNormal">=C2=A0</p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0</p>
</div>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0</p>
<div>
<div>
<p class=3D"MsoNormal">On Thu., Apr. 25, 2024, 12:29 p.m. Simon Lachlan, &l=
t;<a href=3D"mailto:[email-masked]" rel=3D"noopener nore=
ferrer" target=3D"_blank">[email-masked]</a>&gt; wrote:<=
/p>
</div>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0c=
m 0cm 0cm 6.0pt;margin:5.0pt 0cm 5.0pt 4.8pt">
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">So, here is Michael=E2=80=99s =E2=80=9CStep 1=E2=80=9D completed. (=
See his email, below).</span></p>
<ol>
<li class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39=
;,serif">Removed the operating valve and, just for luck, disconnected the t=
wo wires into 3<sup>rd</sup>/4<sup>th</sup> switch. Took the car for a spin=
. Up/down longish/steepish hills, 10 miles on motorway. Various rpm=E2=80=
=A6..no slippage at all.</span></li>
<li class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39=
;,serif">Had a puncture=E2=80=A6..nail in tyre. Rear RHS. Flat as a pancake=
 at once. Nearly onto rim. Nail! I imagine the inner tube is shredded and t=
he tyre may be a write-off. (Usually are!). Anyhow, I bore you with this as=
 I=E2=80=99m convinced that I=E2=80=99d never have got the wheel off withou=
t the little scissors jack which I carry to get the car up the first few in=
ches until the Healey jack comes into play. Just a suggestion=E2=80=A6=E2=
=80=A6.</span></li>
<li class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39=
;,serif">Got home and jacked car up to test pressure. Steady at 520psi whic=
h, I recall, is plenty. Stayed at 520 across rev range. Dropped very slowly=
 once engine was off and dropped to zero as I engaged/disengaged OD a few t=
imes. Which is normal I think?</span></li>
<li class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39=
;,serif">Solenoid makes a robust =E2=80=9Cclick=E2=80=9D when it should and=
 engages the OD when activated.</span></li>
</ol>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">So what=E2=80=99s a sensible =E2=80=9CStep 2=E2=80=9D??</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">I have been urged to check the setting of the Throttle Switch (TS).=
 Assuming that the slippage returns (and why wouldn=E2=80=99t it?), I=E2=80=
=99ll short the TS out to see if that fixes it. If it does, I=E2=80=99ll ch=
eck the adjustment.</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">Suggestions would be more than welcome=E2=80=A6=E2=80=A6I do dread =
having to take that box out again. I=E2=80=99ve got a very adequate ramp an=
d a very strong volunteer(?) but, regardless of all that, it=E2=80=99s stil=
l quite a task. And, like a few of us, I=E2=80=99m not as young as I once w=
as. I=E2=80=99ve always enjoyed the lines from the manual which I reproduce=
, below. =EF=BF=BD=EF=BF=BD=EF=BF=BDGently ease=E2=80=9D!?! </span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">Thanks, Simon</span></p>
<p class=3D"MsoNormal"><span style=3D"font-family:&#39;Times New Roman&#39;=
,serif">=C2=A0</span></p>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><strong><span style=3D"font-size:11.0pt;font-family:=
&#39;Calibri&#39;,sans-serif">From:</span></strong><span style=3D"font-size=
:11.0pt;font-family:&#39;Calibri&#39;,sans-serif"> Michael Salter &lt;<a hr=
ef=3D"mailto:[email-masked]" rel=3D"noopener noreferrer" target=3D=
"_blank">[email-masked]</a>&gt; <br><strong>Sent:</strong> Monday,=
 April 22, 2024 3:21 PM<br><strong>To:</strong> Simon Lachlan &lt;<a href=
=3D"mailto:[email-masked]" rel=3D"noopener noreferrer" t=
arget=3D"_blank">[email-masked]</a>&gt;<br><strong>Cc:</=
strong> Healeys &lt;<a href=3D"mailto:[email-masked]" rel=3D"noopen=
er noreferrer" target=3D"_blank">[email-masked]</a>&gt;<br><strong>=
Subject:</strong> Re: [Healeys] Overdrive pressure or clutch slip</span></p=
</div>
<p class=3D"MsoNormal">=C2=A0</p>
<div>
<div>
<p class=3D"MsoNormal"><strong><u>Correct diagnosis is 1/2 the repair!!</u>=
</strong></p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0</p>
</div>
<p class=3D"MsoNormal">First you need to confirm whether the clutch (on the=
 flywheel) or the overdrive is causing the slippage.=C2=A0</p>
<div>
<p class=3D"MsoNormal">To do this you ABSOLUTELY MUST disable the overdrive=
 as a badly misadjuster overdrive operating valve can produce similar sympt=
oms.=C2=A0</p>
</div>
<div>
<p class=3D"MsoNormal">To do this I would remove the overdrive operating va=
lve completely. (There are other ways but this is absolutely definitive).</=
p>
</div>
<div>
<p class=3D"MsoNormal">Now drive the car up a long hill where you are amle =
to use full throttle at around 3000 RPM (maximum torque) for a few seconds.=
 If it is the clutch (on the flywheel) that is causing the slippage these o=
perating conditions. Test this a few times to be sure.</p>
</div>
<div>
<p class=3D"MsoNormal">If there is no slippage we have confirmed that the o=
verdrive clutch is at fault.</p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0</p>
</div>
<div>
<p class=3D"MsoNormal">Step 1 completed. Please report results.=C2=A0MS.</p=
</div>
<div>
<p class=3D"MsoNormal">=C2=A0</p>
</div>
<div>
<p class=3D"MsoNormal">=C2=A0</p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0</p>
<div>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0c=
m 0cm 0cm 6.0pt;margin:5.0pt 0cm 5.0pt 4.8pt">
<div>
<div>
<p class=3D"MsoNormal">On Mon., Apr. 22, 2024, 8:08 a.m. Simon Lachlan via =
Healeys, &lt;<a href=3D"mailto:[email-masked]" rel=3D"noopener nore=
ferrer" target=3D"_blank">[email-masked]</a>&gt; wrote:</p>
</div>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0c=
m 0cm 0cm 6.0pt;margin:5.0pt 0cm 5.0pt 4.8pt">
<div>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">You may reca=
ll the very extended overdrive and clutch saga last year.</span> <span styl=
e=3D"font-family:&#39;Times New Roman&#39;,serif">Long story short(ish)=E2=
=80=A6</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">OD was slipp=
ing in and out depending on oil temperature.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Correctly di=
agnosed pressure. Checked with gauge.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Attempted re=
build=E2=80=A6going only so far as</span> <span style=3D"font-family:&#39;T=
imes New Roman&#39;,serif">accumulator and related seals.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Stymied as c=
ould not get pump out. Turned out to have been =E2=80=9Cfixed=E2=80=9D at s=
ome stage with some form of =E2=80=9Cchemical metal=E2=80=9D which was comi=
ng loose/apart.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Took it up t=
o OD Spares who fixed it..new housing etcetc</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Why not a ne=
w clutch I thought? Sensible while you=E2=80=99re in the area looking at a =
30+ yr old item.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">New clutch=
=E2=80=A6no good. Noisy, wouldn=E2=80=99t</span> <span style=3D"font-family=
:&#39;Times New Roman&#39;,serif">engage/disengage/play at all.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Gearbox out =
again.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Refit clutch=
. Presumed I=E2=80=99d made some beginner=E2=80=99s mistake.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Refit gearbo=
x=E2=80=A6no good. Same</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Can=E2=80=99=
t recall whether I tried again. Lost count and enthusiasm by now.</span></p=
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Turned out t=
hat the new clutch kit was defective. (Thanks Mirek) (Genuine B&amp;B from =
AHSpares).</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">New one did =
work.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Saga over un=
til yesterday.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Same sort of=
 symptoms=E2=80=A6..</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">All=E2=80=99=
s well for first 10 or so miles. Then the dreaded slippage(?) starts. But i=
t=E2=80=99s not quite the same. Reminds me more of a slipping clutch. (But =
NO smell)</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Symptoms con=
tinue if it=E2=80=99s in or out of OD.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Symptoms red=
uce at speed.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Yes, plenty =
of oil. Over the full mark. Looks very clean. Pretty sure it=E2=80=99s 40wt=
</span> <span style=3D"font-family:&#39;Times New Roman&#39;,serif">non-det=
ergent topped up with 30wt non-detergent. (Or vice-versa).</span> <span sty=
le=3D"font-family:&#39;Times New Roman&#39;,serif">Am confident in state of=
 the filter, magnets etc.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">No, I have n=
ot pressure tested it yet and yes, I dread restarting the whole bloody proc=
ess all over again. I=E2=80=99m not sure I can face taking the box out agai=
n once, let alone multiple times.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">What I want =
and experience tells me I=E2=80=99m unlikely to get is a miracle cure!</spa=
n></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">One initial =
question=E2=80=A6..do OD relays either work or not work? ie, can the relay =
hover between on and off</span> <span style=3D"font-family:&#39;Times New R=
oman&#39;,serif">which might lead to the OD coming in and out? I think that=
 could happen if the switch is off but the unit still hasn=E2=80=99t got th=
e message to disengage from the bulkhead switch.</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">And a supple=
mentary=E2=80=A6.how</span> <span style=3D"font-family:&#39;Times New Roman=
&#39;,serif">do I bench test</span> <span style=3D"font-family:&#39;Times N=
ew Roman&#39;,serif">the relay?</span></p>
<p><span style=3D"font-family:&#39;Times New Roman&#39;,serif">Simon</span>=
</p>
</div>
</blockquote>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<pre>_______________________________________________
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</blockquote>
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--00000000000032bf9c0617048c52--

--===============6193255649481837286==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

[email-masked]

--===============6193255649481837286==--

---

From: Michael Salter via Healeys <[email-masked]>
Date: Fri, 26 Apr 2024 16:50:16 -0400

--===============5792589706186144847==

--000000000000db5e350617060db0
Content-Transfer-Encoding: quoted-printable

Well ...  here's where I believe we are so far.
Presuming that Simon completed the "full torque" test, with the overdrive
hydraulic system totally disabled correctly, we have confirmed that neither
the flywheel clutch nor the overdrive cone clutch slip to produce the
slippage issue that he is chasing.
If the weather improves and Simon can do another road test now that he has
reinstalled the overdrive operating valve *and * the slippage returns we
can be fairly confident that the slippage issue is related to the overdrive
hydraulic system.
Simon has reported that the pump produces over 500 p.s.i. which in my
experience is quite adequate for the overdrive to operate without slippage.=
.
My bet is that either the operating pistons are not receiving that 500
p.s.i. when the valve is opened by the solenoid or something, perhaps an
incorrectly installed spring or 2 or badly leaking piston seals is
preventing the clutch from travelling to the "engaged" position.

M

On Fri., Apr. 26, 2024, 4:05 p.m. Bob Spidell, <[email-masked]> wrote=
:

> which, to my thinking, would be caused by the 8 strong springs overcoming
> hydraulic pressure (and causing the brake ring to slip or disengage, no?)=
.
h
e
8
o
> From: "Bob Spidell" <[email-masked]> <[email-masked]>
> To: <[email-masked]> <[email-masked]>
he
 I
s
p
g
.
f
e
 of the
an
t
nking that
ith by
switch. That=E2=80=99s
in those
uch as something minute
hen
D to
t rod be any help
there
pon
t
n
ve
is email, below).
o slippage at
 at
 the
 as
ithout the little
til
ery
d OD a
 engages the OD
=80=99ll short the
tment.
g to take that
olunteer(?)
a few of
the lines from the
=E2=80=9D!?!
ch
s.
t
ng
eals.
d=E2=80=9D at
coming loose/apart.
a looking
y at all.
 now.
e
) starts.
h. (But NO
ing the box
acle cure!
 can the
ive/healeys
[email-masked]

--000000000000db5e350617060db0
Content-Transfer-Encoding: quoted-printable

<div dir=3D"auto">Well ...=C2=A0 here&#39;s where I believe we are so far.<=
div dir=3D"auto">Presuming that Simon completed the &quot;full torque&quot;=
 test, with the overdrive hydraulic system totally disabled correctly, we h=
ave confirmed that neither the flywheel clutch nor the overdrive cone clutc=
h slip to produce the slippage issue that he is chasing.</div><div dir=3D"a=
uto">If the weather improves and Simon can do another road test now that he=
 has reinstalled the overdrive operating valve <u style=3D"font-weight:bold=
">and=C2=A0</u>=C2=A0the slippage returns we can be fairly confident that t=
he slippage issue is related to the overdrive hydraulic system.=C2=A0</div>=
<div dir=3D"auto">Simon has reported that the pump produces over 500 p.s.i.=
 which in my experience is quite adequate for the overdrive to operate with=
out slippage..</div><div dir=3D"auto">My bet is that either the operating p=
istons are not receiving that 500 p.s.i. when the valve is opened by the so=
lenoid or something, perhaps an incorrectly installed spring or 2 or badly =
leaking piston seals is preventing the clutch from travelling to the &quot;=
engaged&quot; position.</div><div dir=3D"auto"><br></div><div dir=3D"auto">=
M</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail=
_attr">On Fri., Apr. 26, 2024, 4:05 p.m. Bob Spidell, &lt;<a href=3D"mailto=
:[email-masked]" target=3D"_blank" rel=3D"noreferrer">bspidell@comcas=
t.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>

 =20
   =20
 =20
  <div>
    I lost the plot (not unusual): Have we determined, for sure, that
    the problem is &#39;slippage,&#39; which would most likely be due to we=
ar in
    the O/D cone clutch? Or have we determined that Simon&#39;s O/D is
    &#39;dropping out&#39; which, to my thinking, would be caused by the 8
    strong springs overcoming hydraulic pressure (and causing the brake
    ring to slip or disengage, no?). <br>
    <br>
    <br>
    <div>On 4/26/2024 10:03 AM, Hank Leach
      wrote:<br>
    </div>
    <blockquote type=3D"cite">
     =20
      <div>Ok the pressure gauge implies that the hydraulic system is in
        good condition and that will effectively produce overdrive when
        the cone clutch is pushed forward in the box. When OD is <strong>no=
t
          required</strong> the solenoid is inactive and the 8 springs
        in the unit have to keep the cone clutch in the rearward or in
        direct drive position.</div>
      <div>These are stout springs and normally are strong enough to
        engage and hold the clutch without slipping, overcoming the
        hydraulic influence-which should be draining at this
        point..However if the springs are misinstalled in the wrong
        position or not properly mounted on their tabs upon assembly or
        previously &quot;coil bound&quot; from that procedure or wear, they=
 will
        not function to keep direct drive solid without slipping.</div>
      <div>The clutch material should outlive all of us and is not
        normally, or easily, replaced. All you have to keep the car in
        direct drive are those 8 springs and their pressure.<br>
        -Hate to say it but if the re-assembly was defective, the
        gearbox needs to come out and OD removed and checked for correct
        spring fit-at that time I would replace the 8 springs (about
        $100 from Moss) as a routine repair. (photos from my article in
        AH Mag) Hank<br>
        <br>
        From: &quot;Bob Spidell&quot; <a href=3D"mailto:[email-masked]=
t" rel=3D"noreferrer noreferrer" target=3D"_blank">&lt;[email-masked]=
&gt;</a> <br>
        To: <a href=3D"mailto:[email-masked]" rel=3D"noreferrer nor=
eferrer" target=3D"_blank">&lt;[email-masked]&gt;</a> <br>
        Sent: April 26, 2024 at 9:37 AM PDT <br>
        Subject: Re: [Healeys] Overdrive pressure or clutch slip Step 2!
        <br>
        Spitballing ...<br>
        <br>
        I went through my BJ8&#39;s O/D a few years ago. The car had 64K
        miles on it when I bought it (approx. 1984), and about 215K*
        miles on it when I did the overhaul. The O/D cone clutch was
        serviceable--and AFAIK didn&#39;t slip--and I reinstalled it. If ne=
w
        cone clutches were readily available I <em>might</em> have
        bought new, on principle, depending on cost, but all I could
        find was a re-manned one from DWM. To me this implied they
        didn&#39;t often need replacement, whereas known wear items like th=
e
        accumulator are offered by several vendors (I would have
        installed one with an O-ring if I&#39;d known about it).<br>
        <br>
        All this to say, unless the car has extremely high mileage
        and/or the O/D has been abused somehow I&#39;d be surprised if the
        clutch is worn &#39;to the bone.&#39; Obviously, slippage in the co=
ne
        clutch would cause Simon&#39;s car&#39;s symptoms; if so, the probl=
em
        will get progressively worse (and more consistent). I think one
        way to test an O/D clutch would be to really lug the car pulling
        an uphill grade in 4th-O/D, if the clutch is going to slip it
        would do it then (as would a worn engine clutch). There&#39;s also =
a
        (remote) possibility that, for some reason, O/D pressure
        fluctuates during driving.<br>
        <br>
        <br>
        * Anyone else have this many or more known miles on a Healey?<br>
        <br>
        bs<br>
        <br>
        <br>
        <br>
      </div>
      <div>On 4/26/2024 4:51 AM, Michael Salter
        wrote:</div>
      <blockquote>
        <div>
          <div><span style=3D"font-family:&#39;times new roman&#39;,serif;f=
ont-size:12.8px">&quot;What I
              can=E2=80=99t do is understand the leap to the OD cone clutch=
?&quot;</span></div>
          <div><span style=3D"font-family:&#39;times new roman&#39;,serif;f=
ont-size:12.8px">=C2=A0</span></div>
          <div><span style=3D"font-family:&#39;times new roman&#39;,serif;f=
ont-size:12.8px">=C2=A0Fair
              question.</span></div>
          <div><span style=3D"font-family:&#39;times new roman&#39;,serif;f=
ont-size:12.8px">Between
              the flywheel and the rear wheels there are only 2 places
              where &quot;slippage&quot; can occur these are the clutch and=
 the
              overdrive&#39;s cone clutch.=C2=A0</span></div>
          <div><span style=3D"font-family:&#39;times new roman&#39;,serif;f=
ont-size:12.8px">The
              gearbox, other than the cone clutch in the overdrive, is a
              go/no go arrangement, i.e. no &quot;slippage&quot;.</span></d=
iv>
          <div><span style=3D"font-family:&#39;times new roman&#39;,serif;f=
ont-size:12.8px">The
              rear wheel splines, believe it or not, can also produce
              &quot;slippage &quot; if they are in really bad condition but=
 I
              presume that isn&#39;t the case here.</span></div>
          <div><span style=3D"font-family:&#39;times new roman&#39;,serif;f=
ont-size:12.8px">=C2=A0</span></div>
          <div><span style=3D"font-family:&#39;times new roman&#39;,serif;f=
ont-size:12.8px">The
              test that you just completed resulted in no driveline
              slippage when the overdrive was disabled.=C2=A0</span></div>
          <div><span style=3D"font-family:&#39;times new roman&#39;,serif;f=
ont-size:12.8px">You are
              reporting slippage when the overdrive operating system is
              enabled so it follows that further diagnosis of that is
              required.</span></div>
          <div><span style=3D"font-family:&#39;times new roman&#39;,serif;f=
ont-size:12.8px">=C2=A0</span></div>
          <div><span style=3D"font-size:12.8px">Yes, your next step
              would be the same test drive, i.e. full engine torque on
              an uphill grade, to confirm that the slippage issue has
              returned now that the overdriveoperating valvehasbe
              re-installed.=C2=A0=C2=A0</span></div>
          <div><span style=3D"font-size:12.8px">I would do this test
              drive BEFORE making any adjustments to the overdrive valve
              or solenoid in order to confirm that meerly installing the
              overdrive operating valve resulted in the slippage issue
              returning.=C2=A0</span></div>
          <div><span style=3D"font-size:12.8px">Hope the weather
              improves, beautiful day here.</span></div>
          <div><span style=3D"font-size:12.8px">M</span></div>
        </div>
        <br>
        <div class=3D"gmail_quote">
          <div class=3D"gmail_attr">On Fri., Apr. 26, 2024, 7:24 a.m.
            Simon Lachlan, &lt;<a href=3D"mailto:[email-masked]=
lus.com" rel=3D"noopener noreferrer noreferrer" target=3D"_blank">simon.lac=
[email-masked]</a>&gt;
            wrote:</div>
          <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bord=
er-left:1px #ccc solid;padding-left:1ex">
            <div style=3D"word-wrap:break-word">
              <div>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">Hi,
                    Thanks for this.</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">Not
                    sure I understand fully. </span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">Once
                    I=E2=80=99d finished the test drive with the OD operati=
ng
                    valve out of the car, I returned the rod, ball,
                    spring etc and put in the gauge rather than the nut.
                    And got 500+ psi. </span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">What I
                    can=E2=80=99t do is understand the leap to the OD cone
                    clutch. Not arguing=E2=80=A6just saying no comprende. A=
s I
                    sat in the car, I was thinking that the function of
                    the OD seems OK and that it=E2=80=99s being interfered =
with
                    by something in its circuitry=E2=80=A6=E2=80=A6relay, s=
olenoid or
                    throttle switch. That=E2=80=99s probably wishful thinki=
ng as
                    I really don=E2=80=99t want to be swimming in those wat=
ers.</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">=C2=A0</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">I did,
                    as a matter of course, clean out the tiny hole in
                    the rod but didn=E2=80=99t detect any blockage=E2=80=A6=
.which
                    doesn=E2=80=99t mean much as something minute could hav=
e
                    been inside and been washed away by the
                    detergent/hot water then WD40=E2=80=A6..</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">=C2=A0</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">After
                    someone=E2=80=99s advice =E2=80=93 some time back =E2=
=80=93 I=E2=80=99ve got another
                    rod whose aperture has been drilled out to 1.5mm.
                    This was =E2=80=9Cto allow the OD to disengage faster=
=E2=80=9D.
                    Don=E2=80=99t recall if I tried it. Could that rod be a=
ny
                    help here?</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">=C2=A0</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">The
                    ball seems to be sitting square on its seat and the
                    tip of the rod, where the ball sits, is not worn or
                    chipped.</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">Residual
                    pressure=E2=80=A6.. goes to 500+ when I switch OD ON an=
d
                    stays there until, engine and switch OFF, I energize
                    the solenoid a few times whereupon it drops to zero.</s=
pan></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">=C2=A0</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">Another
                    test drive(s) seems called for. But the hood is off
                    to enable access and the forecast is grim for the
                    next week.</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">=C2=A0</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">Very
                    open to more suggestions. Thanks,</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">Simon</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">=C2=A0</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">=C2=A0</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">=C2=A0</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">=C2=A0</span></p>
                <p class=3D"MsoNormal"><span style=3D"font-family:&#39;Time=
s New Roman&#39;,serif">=C2=A0</span></p>
                <div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;pa=
dding:3.0pt 0cm 0cm 0cm">
                  <p class=3D"MsoNormal"><strong><span style=3D"font-size:1=
1.0pt;font-family:&#39;Calibri&#39;,sans-serif">From:</span></strong><span =
style=3D"font-size:11.0pt;font-family:&#39;Calibri&#39;,sans-serif"> Michae=
l
                      Salter &lt;<a href=3D"mailto:[email-masked]"=
 rel=3D"noopener noreferrer noreferrer" target=3D"_blank">michaelsalter@gma=
il.com</a>&gt;
                      <br>
                      <strong>Sent:</strong> Friday, April 26, 2024
                      12:14 AM<br>
                      <strong>To:</strong> Simon Lachlan &lt;<a href=3D"mai=
lto:[email-masked]" rel=3D"noopener noreferrer noreferre=
r" target=3D"_blank">[email-masked]</a>&gt;<br>
                      <strong>Cc:</strong> Healeys &lt;<a href=3D"mailto:he=
[email-masked]" rel=3D"noopener noreferrer noreferrer" target=3D"_bla=
nk">[email-masked]</a>&gt;<br>
                      <strong>Subject:</strong> Re: Overdrive pressure
                      or clutch slip Step 2!</span></p>
                </div>
                <p class=3D"MsoNormal">=C2=A0</p>
                <div>
                  <p class=3D"MsoNormal">Okay, then it is confirmed that
                    neither the clutch (on the flywheel) nor the
                    overdrive cone clutch (in it&#39;s normal drive
                    condition) are producing the slippage.=C2=A0</p>
                  <div>
                    <p class=3D"MsoNormal">From this we can conclude that
                      even when the overdrive solenoid is <strong><u>not</u=
></strong>
                      energized=C2=A0the slippage is occurring at the
                      overdrive cone clutch and that for some reason
                      hydraulic pressure is finding its way into the
                      overdrive operating cylinders even when the
                      overdrive operating valve is closed.</p>
                  </div>
                  <div>
                    <p class=3D"MsoNormal">This can be caused by leakage
                      past operating the valve or residual pressure.</p>
                  </div>
                  <div>
                    <p class=3D"MsoNormal">The question of residual
                      pressure can be resolved by checking that the
                      bleed hole in the bottom of the long overdrive
                      valve push rod is not blocked.</p>
                  </div>
                  <div>
                    <p class=3D"MsoNormal">Whether or not hydraulic
                      pressure is leaking past the operating valve ball
                      can be checked by ensuring that the ball is
                      clearly on its seat when the operating valve is <stro=
ng><u>not=C2=A0</u></strong>=C2=A0energized.</p>
                  </div>
                  <div>
                    <p class=3D"MsoNormal">=C2=A0</p>
                  </div>
                  <div>
                    <p class=3D"MsoNormal">M</p>
                  </div>
                </div>
                <p class=3D"MsoNormal">=C2=A0</p>
                <div>
                  <div>
                    <p class=3D"MsoNormal">On Thu., Apr. 25, 2024, 3:38
                      p.m. Simon Lachlan, &lt;<a href=3D"mailto:simon.lachl=
[email-masked]" rel=3D"noopener noreferrer noreferrer" target=3D"_b=
lank">[email-masked]</a>&gt;
                      wrote:</p>
                  </div>
                  <blockquote style=3D"border:none;border-left:solid #ccccc=
c 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
                    <div>
                      <div>
                        <p class=3D"MsoNormal"><span style=3D"font-family:&=
#39;Times New Roman&#39;,serif">Of course. Isn=E2=80=99t that how
                            I got the 520psi?</span></p>
                        <p class=3D"MsoNormal"><span style=3D"font-family:&=
#39;Times New Roman&#39;,serif">=C2=A0</span></p>
                        <div style=3D"border:none;border-top:solid #e1e1e1 =
1.0pt;padding:3.0pt 0cm 0cm 0cm">
                          <p class=3D"MsoNormal"><strong><span style=3D"fon=
t-size:11.0pt;font-family:&#39;Calibri&#39;,sans-serif">From:</span></stron=
g><span style=3D"font-size:11.0pt;font-family:&#39;Calibri&#39;,sans-serif"=
> Michael
                              Salter &lt;<a href=3D"mailto:michaelsalter@gm=
ail.com" rel=3D"noopener noreferrer noreferrer" target=3D"_blank">michaelsa=
[email-masked]</a>&gt;
                              <br>
                              <strong>Sent:</strong> Thursday, April 25,
                              2024 6:19 PM<br>
                              <strong>To:</strong> Simon Lachlan &lt;<a hre=
f=3D"mailto:[email-masked]" rel=3D"noopener noreferrer n=
oreferrer" target=3D"_blank">[email-masked]</a>&gt;<br>
                              <strong>Cc:</strong> Healeys &lt;<a href=3D"m=
ailto:[email-masked]" rel=3D"noopener noreferrer noreferrer" target=
=3D"_blank">[email-masked]</a>&gt;<br>
                              <strong>Subject:</strong> Re: Overdrive
                              pressure or clutch slip Step 2!</span></p>
                        </div>
                        <p class=3D"MsoNormal">=C2=A0</p>
                        <div>
                          <p class=3D"MsoNormal">Question=C2=A0 ... when yo=
u
                            got home and did the pressure test I presume
                            that was AFTER you had put the valve with
                            the &quot;top hat&quot;, ball, spring and valve=
 rod
                            cap and washer back into position?</p>
                          <div>
                            <p class=3D"MsoNormal">=C2=A0</p>
                          </div>
                          <div>
                            <p class=3D"MsoNormal">M</p>
                            <div>
                              <p class=3D"MsoNormal">=C2=A0</p>
                            </div>
                            <div>
                              <p class=3D"MsoNormal">=C2=A0</p>
                            </div>
                          </div>
                        </div>
                        <p class=3D"MsoNormal">=C2=A0</p>
                        <div>
                          <div>
                            <p class=3D"MsoNormal">On Thu., Apr. 25, 2024,
                              12:29 p.m. Simon Lachlan, &lt;<a href=3D"mail=
to:[email-masked]" rel=3D"noopener noreferrer noreferrer=
" target=3D"_blank">[email-masked]</a>&gt;
                              wrote:</p>
                          </div>
                          <blockquote style=3D"border:none;border-left:soli=
d #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin:5.0pt 0cm 5.0pt 4.8pt">
                            <div>
                              <div>
                                <p class=3D"MsoNormal"><span style=3D"font-=
family:&#39;Times New Roman&#39;,serif">So, here is Michael=E2=80=99s
                                    =E2=80=9CStep 1=E2=80=9D completed. (Se=
e his email,
                                    below).</span></p>
                                <ol>
                                  <li class=3D"MsoNormal"><span style=3D"fo=
nt-family:&#39;Times New Roman&#39;,serif">Removed the operating
                                      valve and, just for luck,
                                      disconnected the two wires into 3<sup=
>rd</sup>/4<sup>th</sup>
                                      switch. Took the car for a spin.
                                      Up/down longish/steepish hills, 10
                                      miles on motorway. Various
                                      rpm=E2=80=A6..no slippage at all.</sp=
an></li>
                                  <li class=3D"MsoNormal"><span style=3D"fo=
nt-family:&#39;Times New Roman&#39;,serif">Had a puncture=E2=80=A6..nail in
                                      tyre. Rear RHS. Flat as a pancake
                                      at once. Nearly onto rim. Nail! I
                                      imagine the inner tube is shredded
                                      and the tyre may be a write-off.
                                      (Usually are!). Anyhow, I bore you
                                      with this as I=E2=80=99m convinced th=
at
                                      I=E2=80=99d never have got the wheel =
off
                                      without the little scissors jack
                                      which I carry to get the car up
                                      the first few inches until the
                                      Healey jack comes into play. Just
                                      a suggestion=E2=80=A6=E2=80=A6.</span=
></li>
                                  <li class=3D"MsoNormal"><span style=3D"fo=
nt-family:&#39;Times New Roman&#39;,serif">Got home and jacked car up
                                      to test pressure. Steady at 520psi
                                      which, I recall, is plenty. Stayed
                                      at 520 across rev range. Dropped
                                      very slowly once engine was off
                                      and dropped to zero as I
                                      engaged/disengaged OD a few times.
                                      Which is normal I think?</span></li>
                                  <li class=3D"MsoNormal"><span style=3D"fo=
nt-family:&#39;Times New Roman&#39;,serif">Solenoid makes a robust
                                      =E2=80=9Cclick=E2=80=9D when it shoul=
d and engages
                                      the OD when activated.</span></li>
                                </ol>
                                <p class=3D"MsoNormal"><span style=3D"font-=
family:&#39;Times New Roman&#39;,serif">So what=E2=80=99s a sensible =E2=80=
=9CStep
                                    2=E2=80=9D??</span></p>
                                <p class=3D"MsoNormal"><span style=3D"font-=
family:&#39;Times New Roman&#39;,serif">I have been urged to check
                                    the setting of the Throttle Switch
                                    (TS). Assuming that the slippage
                                    returns (and why wouldn=E2=80=99t it?),=
 I=E2=80=99ll
                                    short the TS out to see if that
                                    fixes it. If it does, I=E2=80=99ll chec=
k the
                                    adjustment.</span></p>
                                <p class=3D"MsoNormal"><span style=3D"font-=
family:&#39;Times New Roman&#39;,serif">Suggestions would be more
                                    than welcome=E2=80=A6=E2=80=A6I do drea=
d having to
                                    take that box out again. I=E2=80=99ve g=
ot a
                                    very adequate ramp and a very strong
                                    volunteer(?) but, regardless of all
                                    that, it=E2=80=99s still quite a task. =
And,
                                    like a few of us, I=E2=80=99m not as yo=
ung
                                    as I once was. I=E2=80=99ve always enjo=
yed
                                    the lines from the manual which I
                                    reproduce, below. =EF=BF=BD=EF=BF=BD=EF=
=BF=BDGently ease=E2=80=9D!?!
                                  </span></p>
                                <p class=3D"MsoNormal"><span style=3D"font-=
family:&#39;Times New Roman&#39;,serif">=C2=A0</span></p>
                                <p class=3D"MsoNormal"><span style=3D"font-=
family:&#39;Times New Roman&#39;,serif">Thanks, Simon</span></p>
                                <p class=3D"MsoNormal"><span style=3D"font-=
family:&#39;Times New Roman&#39;,serif">=C2=A0</span></p>
                                <div style=3D"border:none;border-top:solid =
#e1e1e1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
                                  <p class=3D"MsoNormal"><strong><span styl=
e=3D"font-size:11.0pt;font-family:&#39;Calibri&#39;,sans-serif">From:</span=
></strong><span style=3D"font-size:11.0pt;font-family:&#39;Calibri&#39;,san=
s-serif"> Michael
                                      Salter &lt;<a href=3D"mailto:michaels=
[email-masked]" rel=3D"noopener noreferrer noreferrer" target=3D"_blank">m=
[email-masked]</a>&gt;
                                      <br>
                                      <strong>Sent:</strong> Monday,
                                      April 22, 2024 3:21 PM<br>
                                      <strong>To:</strong> Simon Lachlan
                                      &lt;<a href=3D"mailto:simon.lachlan@a=
lexarevel.plus.com" rel=3D"noopener noreferrer noreferrer" target=3D"_blank=
">[email-masked]</a>&gt;<br>
                                      <strong>Cc:</strong> Healeys &lt;<a h=
ref=3D"mailto:[email-masked]" rel=3D"noopener noreferrer noreferrer=
" target=3D"_blank">[email-masked]</a>&gt;<br>
                                      <strong>Subject:</strong> Re:
                                      [Healeys] Overdrive pressure or
                                      clutch slip</span></p>
                                </div>
                                <p class=3D"MsoNormal">=C2=A0</p>
                                <div>
                                  <div>
                                    <p class=3D"MsoNormal"><strong><u>Corre=
ct
                                          diagnosis is 1/2 the repair!!</u>=
</strong></p>
                                  </div>
                                  <div>
                                    <p class=3D"MsoNormal">=C2=A0</p>
                                  </div>
                                  <p class=3D"MsoNormal">First you need to
                                    confirm whether the clutch (on the
                                    flywheel) or the overdrive is
                                    causing the slippage.=C2=A0</p>
                                  <div>
                                    <p class=3D"MsoNormal">To do this you
                                      ABSOLUTELY MUST disable the
                                      overdrive as a badly misadjuster
                                      overdrive operating valve can
                                      produce similar symptoms.=C2=A0</p>
                                  </div>
                                  <div>
                                    <p class=3D"MsoNormal">To do this I
                                      would remove the overdrive
                                      operating valve completely. (There
                                      are other ways but this is
                                      absolutely definitive).</p>
                                  </div>
                                  <div>
                                    <p class=3D"MsoNormal">Now drive the
                                      car up a long hill where you are
                                      amle to use full throttle at
                                      around 3000 RPM (maximum torque)
                                      for a few seconds. If it is the
                                      clutch (on the flywheel) that is
                                      causing the slippage these
                                      operating conditions. Test this a
                                      few times to be sure.</p>
                                  </div>
                                  <div>
                                    <p class=3D"MsoNormal">If there is no
                                      slippage we have confirmed that
                                      the overdrive clutch is at fault.</p>
                                  </div>
                                  <div>
                                    <p class=3D"MsoNormal">=C2=A0</p>
                                  </div>
                                  <div>
                                    <p class=3D"MsoNormal">Step 1
                                      completed. Please report
                                      results.=C2=A0MS.</p>
                                  </div>
                                  <div>
                                    <p class=3D"MsoNormal">=C2=A0</p>
                                  </div>
                                  <div>
                                    <p class=3D"MsoNormal">=C2=A0</p>
                                  </div>
                                </div>
                                <p class=3D"MsoNormal">=C2=A0</p>
                                <div>
                                  <blockquote style=3D"border:none;border-l=
eft:solid #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin:5.0pt 0cm 5.0pt 4.=
8pt">
                                    <div>
                                      <div>
                                        <p class=3D"MsoNormal">On Mon.,
                                          Apr. 22, 2024, 8:08 a.m. Simon
                                          Lachlan via Healeys, &lt;<a href=
=3D"mailto:[email-masked]" rel=3D"noopener noreferrer noreferrer" t=
arget=3D"_blank">[email-masked]</a>&gt;
                                          wrote:</p>
                                      </div>
                                      <blockquote style=3D"border:none;bord=
er-left:solid #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin:5.0pt 0cm 5.0p=
t 4.8pt">
                                        <div>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">You may recall the very
                                              extended overdrive and
                                              clutch saga last year.</span>
                                            <span style=3D"font-family:&#39=
;Times New Roman&#39;,serif">Long story short(ish)=E2=80=A6</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">OD was slipping in and out
                                              depending on oil
                                              temperature.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Correctly diagnosed
                                              pressure. Checked with
                                              gauge.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Attempted rebuild=E2=80=A6going
                                              only so far as</span> <span s=
tyle=3D"font-family:&#39;Times New Roman&#39;,serif">accumulator and relate=
d
                                              seals.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Stymied as could not get
                                              pump out. Turned out to
                                              have been =E2=80=9Cfixed=E2=
=80=9D at some
                                              stage with some form of
                                              =E2=80=9Cchemical metal=E2=80=
=9D which was
                                              coming loose/apart.</span></p=
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Took it up to OD Spares
                                              who fixed it..new housing
                                              etcetc</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Why not a new clutch I
                                              thought? Sensible while
                                              you=E2=80=99re in the area lo=
oking
                                              at a 30+ yr old item.</span><=
/p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">New clutch=E2=80=A6no good. Noisy,
                                              wouldn=E2=80=99t</span> <span=
 style=3D"font-family:&#39;Times New Roman&#39;,serif">engage/disengage/pla=
y at
                                              all.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Gearbox out again.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Refit clutch. Presumed I=E2=80=99d
                                              made some beginner=E2=80=99s
                                              mistake.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Refit gearbox=E2=80=A6no good.
                                              Same</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Can=E2=80=99t recall whether I
                                              tried again. Lost count
                                              and enthusiasm by now.</span>=
</p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Turned out that the new
                                              clutch kit was defective.
                                              (Thanks Mirek) (Genuine
                                              B&amp;B from AHSpares).</span=
></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">New one did work.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Saga over until yesterday.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Same sort of symptoms=E2=80=A6..</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">All=E2=80=99s well for first 10 or
                                              so miles. Then the dreaded
                                              slippage(?) starts. But
                                              it=E2=80=99s not quite the sa=
me.
                                              Reminds me more of a
                                              slipping clutch. (But NO
                                              smell)</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Symptoms continue if it=E2=80=99s
                                              in or out of OD.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Symptoms reduce at speed.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Yes, plenty of oil. Over
                                              the full mark. Looks very
                                              clean. Pretty sure it=E2=80=
=99s
                                              40wt</span> <span style=3D"fo=
nt-family:&#39;Times New Roman&#39;,serif">non-detergent topped up
                                              with 30wt non-detergent.
                                              (Or vice-versa).</span> <span=
 style=3D"font-family:&#39;Times New Roman&#39;,serif">Am confident in stat=
e of
                                              the filter, magnets etc.</spa=
n></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">No, I have not pressure
                                              tested it yet and yes, I
                                              dread restarting the whole
                                              bloody process all over
                                              again. I=E2=80=99m not sure I=
 can
                                              face taking the box out
                                              again once, let alone
                                              multiple times.</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">What I want and experience
                                              tells me I=E2=80=99m unlikely=
 to
                                              get is a miracle cure!</span>=
</p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">One initial question=E2=80=A6..do
                                              OD relays either work or
                                              not work? ie, can the
                                              relay hover between on and
                                              off</span> <span style=3D"fon=
t-family:&#39;Times New Roman&#39;,serif">which might lead to the OD
                                              coming in and out? I think
                                              that could happen if the
                                              switch is off but the unit
                                              still hasn=E2=80=99t got the
                                              message to disengage from
                                              the bulkhead switch.</span></=
p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">And a supplementary=E2=80=A6.how</span>
                                            <span style=3D"font-family:&#39=
;Times New Roman&#39;,serif">do I bench test</span> <span style=3D"font-fam=
ily:&#39;Times New Roman&#39;,serif">the relay?</span></p>
                                          <p><span style=3D"font-family:&#3=
9;Times New Roman&#39;,serif">Simon</span></p>
                                        </div>
                                      </blockquote>
                                    </div>
                                  </blockquote>
                                </div>
                              </div>
                            </div>
                          </blockquote>
                        </div>
                      </div>
                    </div>
                  </blockquote>
                </div>
              </div>
            </div>
          </blockquote>
        </div>
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--000000000000db5e350617060db0--

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[email-masked]

--===============5792589706186144847==--

---

From: Simon Lachlan via Healeys <[email-masked]>
Date: Fri, 26 Apr 2024 22:09:58 +0100

This is a multipart message in MIME format.

--===============2459594456157469781==
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	charset="utf-8"
Content-Transfer-Encoding: quoted-printable

I=E2=80=99ve determined this much:-

After, say, 5 miles the car started slipping in/out of OD. It was a =
slower in/out than one would obtain with the dashboard switch. Sort of =
slipping in/out. Not =E2=80=9Cdropping out=E2=80=9D so far as I can =
determine.

=20

Per Michael=E2=80=99s advice, I removed the operating valve and charged =
up/down hills and along a Motorway. No slippage. At all. I concluded =
that the clutch on the flywheel was not slipping. (TG, as it=E2=80=99s =
practically brand new).

=20

I then replaced the all the valve components under a gauge, jacked the =
car up/wheels off the ground and spun up the engine..into gear and =
switched on the OD. A steady 500psi which remained steady with the =
engine off until I engaged/disengaged the OD a few times. Which, from =
memory, is what one would expect. At this stage I cleaned out the rod. =
No dirt detected in little hole but could easily miss a flake of paint =
or a piece of swarf=E2=80=A6=E2=80=A6

=20

The solenoid makes a healthy click and visibly lifts the lever, say, =
=C2=BC=E2=80=9D. Appears(!) healthy. OD seems to go in and out as it =
should and not slip but wheels are off the ground so not a fair test for =
slippage.=20

=20

The whole OD was rebuilt, by OD spares about 15 years ago since when =
it=E2=80=99s had a fairly relaxed time and about 15,000 miles. Very =
seldom more than 80mph and usually cruising at 65mph on Motorway. The =
front, pump end, was rebuilt by ODSpares in late 2021. Car has a 28% OD =
and a 3:54 diff so 65mph is fairly relaxed rev wise.

=20

Have not delved into Throttle Switch, Relay or Solenoid yet. Will do so, =
in that order, when weather permits test drives.

=20

Thank you everyone for your help and attention in this matter,

Simon

=20

From: Healeys <[email-masked]> On Behalf Of Bob Spidell
Sent: Friday, April 26, 2024 7:17 PM
To: [email-masked]; [email-masked]
Subject: Re: [Healeys] Overdrive pressure or clutch slip Step 2!

=20

I lost the plot (not unusual): Have we determined, for sure, that the =
problem is 'slippage,' which would most likely be due to wear in the O/D =
cone clutch? Or have we determined that Simon's O/D is 'dropping out' =
which, to my thinking, would be caused by the 8 strong springs =
overcoming hydraulic pressure (and causing the brake ring to slip or =
disengage, no?).=20

Ok the pressure gauge implies that the hydraulic system is in good =
condition and that will effectively produce overdrive when the cone =
clutch is pushed forward in the box. When OD is not required the =
solenoid is inactive and the 8 springs in the unit have to keep the cone =
clutch in the rearward or in direct drive position.

These are stout springs and normally are strong enough to engage and =
hold the clutch without slipping, overcoming the hydraulic =
influence-which should be draining at this point..However if the springs =
are misinstalled in the wrong position or not properly mounted on their =
tabs upon assembly or previously "coil bound" from that procedure or =
wear, they will not function to keep direct drive solid without =
slipping.

The clutch material should outlive all of us and is not normally, or =
easily, replaced. All you have to keep the car in direct drive are those =
8 springs and their pressure.
-Hate to say it but if the re-assembly was defective, the gearbox needs =
to come out and OD removed and checked for correct spring fit-at that =
time I would replace the 8 springs (about $100 from Moss) as a routine =
repair. (photos from my article in AH Mag) Hank

<[email-masked]>=20
Sent: April 26, 2024 at 9:37 AM PDT=20
Subject: Re: [Healeys] Overdrive pressure or clutch slip Step 2!=20
Spitballing ...

I went through my BJ8's O/D a few years ago. The car had 64K miles on it =
when I bought it (approx. 1984), and about 215K* miles on it when I did =
the overhaul. The O/D cone clutch was serviceable--and AFAIK didn't =
slip--and I reinstalled it. If new cone clutches were readily available =
I might have bought new, on principle, depending on cost, but all I =
could find was a re-manned one from DWM. To me this implied they didn't =
often need replacement, whereas known wear items like the accumulator =
are offered by several vendors (I would have installed one with an =
O-ring if I'd known about it).

All this to say, unless the car has extremely high mileage and/or the =
O/D has been abused somehow I'd be surprised if the clutch is worn 'to =
the bone.' Obviously, slippage in the cone clutch would cause Simon's =
car's symptoms; if so, the problem will get progressively worse (and =
more consistent). I think one way to test an O/D clutch would be to =
really lug the car pulling an uphill grade in 4th-O/D, if the clutch is =
going to slip it would do it then (as would a worn engine clutch). =
There's also a (remote) possibility that, for some reason, O/D pressure =
fluctuates during driving.

bs

=20

 Fair question.

Between the flywheel and the rear wheels there are only 2 places where =
"slippage" can occur these are the clutch and the overdrive's cone =
clutch.=20

The gearbox, other than the cone clutch in the overdrive, is a go/no go =
arrangement, i.e. no "slippage".

The rear wheel splines, believe it or not, can also produce "slippage " =
if they are in really bad condition but I presume that isn't the case =
here.

=20

The test that you just completed resulted in no driveline slippage when =
the overdrive was disabled.=20

You are reporting slippage when the overdrive operating system is =
enabled so it follows that further diagnosis of that is required.

=20

Yes, your next step would be the same test drive, i.e. full engine =
torque on an uphill grade, to confirm that the slippage issue has =
returned now that the overdriveoperating valvehasbe re-installed. =20

I would do this test drive BEFORE making any adjustments to the =
overdrive valve or solenoid in order to confirm that meerly installing =
the overdrive operating valve resulted in the slippage issue returning.=20

M

=20

On Fri., Apr. 26, 2024, 7:24 a.m. Simon Lachlan, =
<[email-masked] =

Hi, Thanks for this.

Not sure I understand fully.=20

Once I=E2=80=99d finished the test drive with the OD operating valve out =
of the car, I returned the rod, ball, spring etc and put in the gauge =
rather than the nut. And got 500+ psi.=20

What I can=E2=80=99t do is understand the leap to the OD cone clutch. =
Not arguing=E2=80=A6just saying no comprende. As I sat in the car, I was =
thinking that the function of the OD seems OK and that it=E2=80=99s =
being interfered with by something in its =
circuitry=E2=80=A6=E2=80=A6relay, solenoid or throttle switch. =
That=E2=80=99s probably wishful thinking as I really don=E2=80=99t want =
to be swimming in those waters.

=20

I did, as a matter of course, clean out the tiny hole in the rod but =
didn=E2=80=99t detect any blockage=E2=80=A6.which doesn=E2=80=99t mean =
much as something minute could have been inside and been washed away by =
the detergent/hot water then WD40=E2=80=A6..

=20

After someone=E2=80=99s advice =E2=80=93 some time back =E2=80=93 =
I=E2=80=99ve got another rod whose aperture has been drilled out to =
1.5mm. This was =E2=80=9Cto allow the OD to disengage faster=E2=80=9D. =
Don=E2=80=99t recall if I tried it. Could that rod be any help here?

=20

The ball seems to be sitting square on its seat and the tip of the rod, =
where the ball sits, is not worn or chipped.

Residual pressure=E2=80=A6.. goes to 500+ when I switch OD ON and stays =
there until, engine and switch OFF, I energize the solenoid a few times =
whereupon it drops to zero.

=20

Another test drive(s) seems called for. But the hood is off to enable =
access and the forecast is grim for the next week.

=20

Simon

=20

=20

=20

=20

=20

From: Michael Salter <[email-masked] =
Sent: Friday, April 26, 2024 12:14 AM
To: Simon Lachlan <[email-masked] =
Subject: Re: Overdrive pressure or clutch slip Step 2!

=20

Okay, then it is confirmed that neither the clutch (on the flywheel) nor =
the overdrive cone clutch (in it's normal drive condition) are producing =
the slippage.=20

>From this we can conclude that even when the overdrive solenoid is not =
energized the slippage is occurring at the overdrive cone clutch and =
that for some reason hydraulic pressure is finding its way into the =
overdrive operating cylinders even when the overdrive operating valve is =
closed.

This can be caused by leakage past operating the valve or residual =
pressure.

The question of residual pressure can be resolved by checking that the =
bleed hole in the bottom of the long overdrive valve push rod is not =
blocked.

Whether or not hydraulic pressure is leaking past the operating valve =
ball can be checked by ensuring that the ball is clearly on its seat =
when the operating valve is not  energized.

=20

M

=20

On Thu., Apr. 25, 2024, 3:38 p.m. Simon Lachlan, =
<[email-masked] =

=20

From: Michael Salter <[email-masked] =
Sent: Thursday, April 25, 2024 6:19 PM
To: Simon Lachlan <[email-masked] =
Subject: Re: Overdrive pressure or clutch slip Step 2!

=20

Question  ... when you got home and did the pressure test I presume that =
was AFTER you had put the valve with the "top hat", ball, spring and =
valve rod cap and washer back into position?

=20

M

=20

=20

=20

On Thu., Apr. 25, 2024, 12:29 p.m. Simon Lachlan, =
<[email-masked] =

So, here is Michael=E2=80=99s =E2=80=9CStep 1=E2=80=9D completed. (See =
his email, below).

1.	Removed the operating valve and, just for luck, disconnected the two =
wires into 3rd/4th switch. Took the car for a spin. Up/down =
longish/steepish hills, 10 miles on motorway. Various rpm=E2=80=A6..no =
slippage at all.
2.	Had a puncture=E2=80=A6..nail in tyre. Rear RHS. Flat as a pancake at =
once. Nearly onto rim. Nail! I imagine the inner tube is shredded and =
the tyre may be a write-off. (Usually are!). Anyhow, I bore you with =
this as I=E2=80=99m convinced that I=E2=80=99d never have got the wheel =
off without the little scissors jack which I carry to get the car up the =
first few inches until the Healey jack comes into play. Just a =
suggestion=E2=80=A6=E2=80=A6.
3.	Got home and jacked car up to test pressure. Steady at 520psi which, =
I recall, is plenty. Stayed at 520 across rev range. Dropped very slowly =
once engine was off and dropped to zero as I engaged/disengaged OD a few =
times. Which is normal I think?
4.	Solenoid makes a robust =E2=80=9Cclick=E2=80=9D when it should and =
engages the OD when activated.

I have been urged to check the setting of the Throttle Switch (TS). =
Assuming that the slippage returns (and why wouldn=E2=80=99t it?), =
I=E2=80=99ll short the TS out to see if that fixes it. If it does, =
I=E2=80=99ll check the adjustment.

Suggestions would be more than welcome=E2=80=A6=E2=80=A6I do dread =
having to take that box out again. I=E2=80=99ve got a very adequate ramp =
and a very strong volunteer(?) but, regardless of all that, it=E2=80=99s =
still quite a task. And, like a few of us, I=E2=80=99m not as young as I =
once was. I=E2=80=99ve always enjoyed the lines from the manual which I =
reproduce, below. =EF=BF=BD=EF=BF=BD=EF=BF=BDGently ease=E2=80=9D!?!=20

=20

Thanks, Simon

=20

From: Michael Salter <[email-masked] =
Sent: Monday, April 22, 2024 3:21 PM
To: Simon Lachlan <[email-masked] =
Subject: Re: [Healeys] Overdrive pressure or clutch slip

=20

Correct diagnosis is 1/2 the repair!!

=20

First you need to confirm whether the clutch (on the flywheel) or the =
overdrive is causing the slippage.=20

To do this you ABSOLUTELY MUST disable the overdrive as a badly =
misadjuster overdrive operating valve can produce similar symptoms.=20

To do this I would remove the overdrive operating valve completely. =
(There are other ways but this is absolutely definitive).

Now drive the car up a long hill where you are amle to use full throttle =
at around 3000 RPM (maximum torque) for a few seconds. If it is the =
clutch (on the flywheel) that is causing the slippage these operating =
conditions. Test this a few times to be sure.

If there is no slippage we have confirmed that the overdrive clutch is =
at fault.

=20

=20

=20

=20

On Mon., Apr. 22, 2024, 8:08 a.m. Simon Lachlan via Healeys, =

You may recall the very extended overdrive and clutch saga last year. =
Long story short(ish)=E2=80=A6

Attempted rebuild=E2=80=A6going only so far as accumulator and related =
seals.

Stymied as could not get pump out. Turned out to have been =
=E2=80=9Cfixed=E2=80=9D at some stage with some form of =
=E2=80=9Cchemical metal=E2=80=9D which was coming loose/apart.

Why not a new clutch I thought? Sensible while you=E2=80=99re in the =
area looking at a 30+ yr old item.

New clutch=E2=80=A6no good. Noisy, wouldn=E2=80=99t =
engage/disengage/play at all.

Gearbox out again.

Can=E2=80=99t recall whether I tried again. Lost count and enthusiasm by =
now.

Turned out that the new clutch kit was defective. (Thanks Mirek) =
(Genuine B&B from AHSpares).

New one did work.

All=E2=80=99s well for first 10 or so miles. Then the dreaded =
slippage(?) starts. But it=E2=80=99s not quite the same. Reminds me more =
of a slipping clutch. (But NO smell)

Yes, plenty of oil. Over the full mark. Looks very clean. Pretty sure =
it=E2=80=99s 40wt non-detergent topped up with 30wt non-detergent. (Or =
vice-versa). Am confident in state of the filter, magnets etc.

No, I have not pressure tested it yet and yes, I dread restarting the =
whole bloody process all over again. I=E2=80=99m not sure I can face =
taking the box out again once, let alone multiple times.

What I want and experience tells me I=E2=80=99m unlikely to get is a =
miracle cure!

One initial question=E2=80=A6..do OD relays either work or not work? ie, =
can the relay hover between on and off which might lead to the OD coming =
in and out? I think that could happen if the switch is off but the unit =
still hasn=E2=80=99t got the message to disengage from the bulkhead =
switch.

Simon

=20

_______________________________________________
=20
Archive: http://www.team.net/pipermail/healeys =
http://autox.team.net/archive/healeys
=20
http://autox.team.net/mailman/listinfo/healeys
=20
http://autox.team.net/mailman/options/healeys/[email-masked]
=20

=20

=20

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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB link=3Dblue =
vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>I=E2=80=99ve determined this =
much:-<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>After, say, 5 miles the car =
started slipping in/out of OD. It was a slower in/out than one would =
obtain with the dashboard switch. Sort of slipping in/out. Not =
=E2=80=9Cdropping out=E2=80=9D so far as I can =
determine.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Per Michael=E2=80=99s advice, I =
removed the operating valve and charged up/down hills and along a =
Motorway. No slippage. At all. I concluded that the clutch on the =
flywheel was not slipping. (TG, as it=E2=80=99s practically brand =
new).<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>I then replaced the all the =
valve components under a gauge, jacked the car up/wheels off the ground =
and spun up the engine..into gear and switched on the OD. A steady =
500psi which remained steady with the engine off until I =
engaged/disengaged the OD a few times. Which, from memory, is what one =
would expect. At this stage I cleaned out the rod. No dirt detected in =
little hole but could easily miss a flake of paint or a piece of =
swarf=E2=80=A6=E2=80=A6<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>The solenoid makes a healthy =
click and visibly lifts the lever, say, =C2=BC=E2=80=9D. Appears(!) =
healthy. OD seems to go in and out as it should and not slip but wheels =
are off the ground so not a fair test for slippage. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>The whole OD was rebuilt, by OD =
spares about 15 years ago since when it=E2=80=99s had a fairly relaxed =
time and about 15,000 miles. Very seldom more than 80mph and usually =
cruising at 65mph on Motorway. The front, pump end, was rebuilt by =
ODSpares in late 2021. Car has a 28% OD and a 3:54 diff so 65mph is =
fairly relaxed rev wise.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Have not delved into Throttle =
Switch, Relay or Solenoid yet. Will do so, in that order, when weather =
permits test drives.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Thank you everyone for your =
help and attention in this matter,<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Simon<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><div=
><div style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt =
0cm 0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Healeys =
&lt;[email-masked]&gt; <b>On Behalf Of </b>Bob =
Spidell<br><b>Sent:</b> Friday, April 26, 2024 7:17 PM<br><b>To:</b> =
[email-masked]; [email-masked]<br><b>Subject:</b> Re: =
[Healeys] Overdrive pressure or clutch slip Step =
2!<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>I lost the plot (not unusual): Have we =
determined, for sure, that the problem is 'slippage,' which would most =
likely be due to wear in the O/D cone clutch? Or have we determined that =
Simon's O/D is 'dropping out' which, to my thinking, would be caused by =
the 8 strong springs overcoming hydraulic pressure (and causing the =
brake ring to slip or disengage, no?). <br><br><o:p></o:p></p><div><p =
class=3DMsoNormal>On 4/26/2024 10:03 AM, Hank Leach =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p =
class=3DMsoNormal>Ok the pressure gauge implies that the hydraulic =
system is in good condition and that will effectively produce overdrive =
when the cone clutch is pushed forward in the box. When OD is =
<strong><span style=3D'font-family:"Aptos",sans-serif'>not =
required</span></strong> the solenoid is inactive and the 8 springs in =
the unit have to keep the cone clutch in the rearward or in direct drive =
position.<o:p></o:p></p></div><div><p class=3DMsoNormal>These are stout =
springs and normally are strong enough to engage and hold the clutch =
without slipping, overcoming the hydraulic influence-which should be =
draining at this point..However if the springs are misinstalled in the =
wrong position or not properly mounted on their tabs upon assembly or =
previously &quot;coil bound&quot; from that procedure or wear, they will =
not function to keep direct drive solid without =
slipping.<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>The clutch material should outlive all of =
us and is not normally, or easily, replaced. All you have to keep the =
car in direct drive are those 8 springs and their pressure.<br>-Hate to =
say it but if the re-assembly was defective, the gearbox needs to come =
out and OD removed and checked for correct spring fit-at that time I =
would replace the 8 springs (about $100 from Moss) as a routine repair. =
(photos from my article in AH Mag) Hank<br><br>From: &quot;Bob =
Spidell&quot; <a =
href=3D"mailto:[email-masked]">&lt;[email-masked]&gt;</a> =
<br>To: <a =
href=3D"mailto:[email-masked]">&lt;[email-masked]&gt;</a>=
 <br>Sent: April 26, 2024 at 9:37 AM PDT <br>Subject: Re: [Healeys] =
Overdrive pressure or clutch slip Step 2! <br>Spitballing ...<br><br>I =
went through my BJ8's O/D a few years ago. The car had 64K miles on it =
when I bought it (approx. 1984), and about 215K* miles on it when I did =
the overhaul. The O/D cone clutch was serviceable--and AFAIK didn't =
slip--and I reinstalled it. If new cone clutches were readily available =
I <em><span style=3D'font-family:"Aptos",sans-serif'>might</span></em> =
have bought new, on principle, depending on cost, but all I could find =
was a re-manned one from DWM. To me this implied they didn't often need =
replacement, whereas known wear items like the accumulator are offered =
by several vendors (I would have installed one with an O-ring if I'd =
known about it).<br><br>All this to say, unless the car has extremely =
high mileage and/or the O/D has been abused somehow I'd be surprised if =
the clutch is worn 'to the bone.' Obviously, slippage in the cone clutch =
would cause Simon's car's symptoms; if so, the problem will get =
progressively worse (and more consistent). I think one way to test an =
O/D clutch would be to really lug the car pulling an uphill grade in =
4th-O/D, if the clutch is going to slip it would do it then (as would a =
worn engine clutch). There's also a (remote) possibility that, for some =
reason, O/D pressure fluctuates during driving.<br><br><br>* Anyone else =
have this many or more known miles on a =
Healey?<br><br>bs<br><br><br><o:p></o:p></p></div><div><p =
class=3DMsoNormal>On 4/26/2024 4:51 AM, Michael Salter =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt;font-family:"Times New =
Roman",serif'>&quot;What I can=E2=80=99t do is understand the leap to =
the OD cone clutch?&quot;</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt;font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt;font-family:"Times New =
Roman",serif'>&nbsp;Fair question.</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt;font-family:"Times New =
Roman",serif'>Between the flywheel and the rear wheels there are only 2 =
places where &quot;slippage&quot; can occur these are the clutch and the =
overdrive's cone clutch.&nbsp;</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt;font-family:"Times New =
Roman",serif'>The gearbox, other than the cone clutch in the overdrive, =
is a go/no go arrangement, i.e. no =
&quot;slippage&quot;.</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt;font-family:"Times New =
Roman",serif'>The rear wheel splines, believe it or not, can also =
produce &quot;slippage &quot; if they are in really bad condition but I =
presume that isn't the case here.</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt;font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt;font-family:"Times New =
Roman",serif'>The test that you just completed resulted in no driveline =
slippage when the overdrive was =
disabled.&nbsp;</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt;font-family:"Times New =
Roman",serif'>You are reporting slippage when the overdrive operating =
system is enabled so it follows that further diagnosis of that is =
required.</span><o:p></o:p></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:9.5pt;font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt'>Yes, your next step =
would be the same test drive, i.e. full engine torque on an uphill =
grade, to confirm that the slippage issue has returned now that the =
overdriveoperating valvehasbe =
re-installed.&nbsp;&nbsp;</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt'>I would do this test =
drive BEFORE making any adjustments to the overdrive valve or solenoid =
in order to confirm that meerly installing the overdrive operating valve =
resulted in the slippage issue =
returning.&nbsp;</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:9.5pt'>Hope the weather =
improves, beautiful day here.</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:9.5pt'>M</span><o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>On =
Fri., Apr. 26, 2024, 7:24 a.m. Simon Lachlan, &lt;<a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Hi, Thanks for =
this.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Not sure I understand =
fully. </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Once I=E2=80=99d finished =
the test drive with the OD operating valve out of the car, I returned =
the rod, ball, spring etc and put in the gauge rather than the nut. And =
got 500+ psi. </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>What I can=E2=80=99t do is =
understand the leap to the OD cone clutch. Not arguing=E2=80=A6just =
saying no comprende. As I sat in the car, I was thinking that the =
function of the OD seems OK and that it=E2=80=99s being interfered with =
by something in its circuitry=E2=80=A6=E2=80=A6relay, solenoid or =
throttle switch. That=E2=80=99s probably wishful thinking as I really =
don=E2=80=99t want to be swimming in those =
waters.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>I did, as a matter of =
course, clean out the tiny hole in the rod but didn=E2=80=99t detect any =
blockage=E2=80=A6.which doesn=E2=80=99t mean much as something minute =
could have been inside and been washed away by the detergent/hot water =
then WD40=E2=80=A6..</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>After someone=E2=80=99s =
advice =E2=80=93 some time back =E2=80=93 I=E2=80=99ve got another rod =
whose aperture has been drilled out to 1.5mm. This was =E2=80=9Cto allow =
the OD to disengage faster=E2=80=9D. Don=E2=80=99t recall if I tried it. =
Could that rod be any help here?</span><o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>The ball seems to be =
sitting square on its seat and the tip of the rod, where the ball sits, =
is not worn or chipped.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Residual =
pressure=E2=80=A6.. goes to 500+ when I switch OD ON and stays there =
until, engine and switch OFF, I energize the solenoid a few times =
whereupon it drops to zero.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Another test drive(s) =
seems called for. But the hood is off to enable access and the forecast =
is grim for the next week.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Very open to more =
suggestions. Thanks,</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>Simon</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><strong><spa=
n =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/strong><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Michael =
Salter &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; <br><strong><span =
style=3D'font-family:"Calibri",sans-serif'>Sent:</span></strong> Friday, =
April 26, 2024 12:14 AM<br><strong><span =
style=3D'font-family:"Calibri",sans-serif'>To:</span></strong> Simon =
Lachlan &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt;<br><strong><s=
pan style=3D'font-family:"Calibri",sans-serif'>Cc:</span></strong> =
Healeys &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt;<br><strong><span =
style=3D'font-family:"Calibri",sans-serif'>Subject:</span></strong> Re: =
Overdrive pressure or clutch slip Step 2!</span><o:p></o:p></p></div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Okay, then =
it is confirmed that neither the clutch (on the flywheel) nor the =
overdrive cone clutch (in it's normal drive condition) are producing the =
slippage.&nbsp;<o:p></o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>From this =
we can conclude that even when the overdrive solenoid is =
<strong><u><span =
style=3D'font-family:"Aptos",sans-serif'>not</span></u></strong> =
energized&nbsp;the slippage is occurring at the overdrive cone clutch =
and that for some reason hydraulic pressure is finding its way into the =
overdrive operating cylinders even when the overdrive operating valve is =
closed.<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>This can be =
caused by leakage past operating the valve or residual =
pressure.<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The =
question of residual pressure can be resolved by checking that the bleed =
hole in the bottom of the long overdrive valve push rod is not =
blocked.<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Whether or =
not hydraulic pressure is leaking past the operating valve ball can be =
checked by ensuring that the ball is clearly on its seat when the =
operating valve is <strong><u><span =
style=3D'font-family:"Aptos",sans-serif'>not&nbsp;</span></u></strong>&nb=
sp;energized.<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>M<o:p></o:p>=
</p></div></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Thu., =
Apr. 25, 2024, 3:38 p.m. Simon Lachlan, &lt;<a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Of course. Isn=E2=80=99t =
that how I got the 520psi?</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><strong><spa=
n =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/strong><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Michael =
Salter &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; <br><strong><span =
style=3D'font-family:"Calibri",sans-serif'>Sent:</span></strong> =
Thursday, April 25, 2024 6:19 PM<br><strong><span =
style=3D'font-family:"Calibri",sans-serif'>To:</span></strong> Simon =
Lachlan &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt;<br><strong><s=
pan style=3D'font-family:"Calibri",sans-serif'>Cc:</span></strong> =
Healeys &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt;<br><strong><span =
style=3D'font-family:"Calibri",sans-serif'>Subject:</span></strong> Re: =
Overdrive pressure or clutch slip Step 2!</span><o:p></o:p></p></div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Question&nbs=
p; ... when you got home and did the pressure test I presume that was =
AFTER you had put the valve with the &quot;top hat&quot;, ball, spring =
and valve rod cap and washer back into position?<o:p></o:p></p><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>M<o:p></o:p>=
</p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p></div></div></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Thu., =
Apr. 25, 2024, 12:29 p.m. Simon Lachlan, &lt;<a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>So, here is =
Michael=E2=80=99s =E2=80=9CStep 1=E2=80=9D completed. (See his email, =
below).</span><o:p></o:p></p><ol start=3D1 type=3D1><li =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 =
level1 lfo1'><span style=3D'font-family:"Times New Roman",serif'>Removed =
the operating valve and, just for luck, disconnected the two wires into =
3<sup>rd</sup>/4<sup>th</sup> switch. Took the car for a spin. Up/down =
longish/steepish hills, 10 miles on motorway. Various rpm=E2=80=A6..no =
slippage at all.</span><o:p></o:p></li><li class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 =
level1 lfo1'><span style=3D'font-family:"Times New Roman",serif'>Had a =
puncture=E2=80=A6..nail in tyre. Rear RHS. Flat as a pancake at once. =
Nearly onto rim. Nail! I imagine the inner tube is shredded and the tyre =
may be a write-off. (Usually are!). Anyhow, I bore you with this as =
I=E2=80=99m convinced that I=E2=80=99d never have got the wheel off =
without the little scissors jack which I carry to get the car up the =
first few inches until the Healey jack comes into play. Just a =
suggestion=E2=80=A6=E2=80=A6.</span><o:p></o:p></li><li =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 =
level1 lfo1'><span style=3D'font-family:"Times New Roman",serif'>Got =
home and jacked car up to test pressure. Steady at 520psi which, I =
recall, is plenty. Stayed at 520 across rev range. Dropped very slowly =
once engine was off and dropped to zero as I engaged/disengaged OD a few =
times. Which is normal I think?</span><o:p></o:p></li><li =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 =
level1 lfo1'><span style=3D'font-family:"Times New =
Roman",serif'>Solenoid makes a robust =E2=80=9Cclick=E2=80=9D when it =
should and engages the OD when activated.</span><o:p></o:p></li></ol><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>So what=E2=80=99s a =
sensible =E2=80=9CStep 2=E2=80=9D??</span><o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>I have been urged to check =
the setting of the Throttle Switch (TS). Assuming that the slippage =
returns (and why wouldn=E2=80=99t it?), I=E2=80=99ll short the TS out to =
see if that fixes it. If it does, I=E2=80=99ll check the =
adjustment.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Suggestions would be more =
than welcome=E2=80=A6=E2=80=A6I do dread having to take that box out =
again. I=E2=80=99ve got a very adequate ramp and a very strong =
volunteer(?) but, regardless of all that, it=E2=80=99s still quite a =
task. And, like a few of us, I=E2=80=99m not as young as I once was. =
I=E2=80=99ve always enjoyed the lines from the manual which I reproduce, =
below. </span><span =
style=3D'font-family:"Tahoma",sans-serif'>=EF=BF=BD=EF=BF=BD=EF=BF=BD</sp=
an><span style=3D'font-family:"Times New Roman",serif'>Gently =
ease=E2=80=9D!?! </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New Roman",serif'>Thanks, =
Simon</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-family:"Times New =
Roman",serif'>&nbsp;</span><o:p></o:p></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><strong><spa=
n =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/strong><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Michael =
Salter &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; <br><strong><span =
style=3D'font-family:"Calibri",sans-serif'>Sent:</span></strong> Monday, =
April 22, 2024 3:21 PM<br><strong><span =
style=3D'font-family:"Calibri",sans-serif'>To:</span></strong> Simon =
Lachlan &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt;<br><strong><s=
pan style=3D'font-family:"Calibri",sans-serif'>Cc:</span></strong> =
Healeys &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt;<br><strong><span =
style=3D'font-family:"Calibri",sans-serif'>Subject:</span></strong> Re: =
[Healeys] Overdrive pressure or clutch =
slip</span><o:p></o:p></p></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><strong><u><=
span style=3D'font-family:"Aptos",sans-serif'>Correct diagnosis is 1/2 =
the repair!!</span></u></strong><o:p></o:p></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>First you =
need to confirm whether the clutch (on the flywheel) or the overdrive is =
causing the slippage.&nbsp;<o:p></o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>To do this =
you ABSOLUTELY MUST disable the overdrive as a badly misadjuster =
overdrive operating valve can produce similar =
symptoms.&nbsp;<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>To do this =
I would remove the overdrive operating valve completely. (There are =
other ways but this is absolutely =
definitive).<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Now drive =
the car up a long hill where you are amle to use full throttle at around =
3000 RPM (maximum torque) for a few seconds. If it is the clutch (on the =
flywheel) that is causing the slippage these operating conditions. Test =
this a few times to be sure.<o:p></o:p></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>If there is =
no slippage we have confirmed that the overdrive clutch is at =
fault.<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Step 1 =
completed. Please report results.&nbsp;MS.<o:p></o:p></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p></div></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<o:p><=
/o:p></p><div><blockquote style=3D'border:none;border-left:solid #CCCCCC =
1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Mon., =
Apr. 22, 2024, 8:08 a.m. Simon Lachlan via Healeys, &lt;<a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
0pt'><div><p><span style=3D'font-family:"Times New Roman",serif'>You =
may recall the very extended overdrive and clutch saga last year.</span> =
<span style=3D'font-family:"Times New Roman",serif'>Long story =
short(ish)=E2=80=A6</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>OD was slipping in and out =
depending on oil temperature.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>Correctly diagnosed =
pressure. Checked with gauge.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>Attempted =
rebuild=E2=80=A6going only so far as</span> <span =
style=3D'font-family:"Times New Roman",serif'>accumulator and related =
seals.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Stymied as could not get pump out. Turned out to have been =
=E2=80=9Cfixed=E2=80=9D at some stage with some form of =
=E2=80=9Cchemical metal=E2=80=9D which was coming =
loose/apart.</span><o:p></o:p></p><p><span style=3D'font-family:"Times =
New Roman",serif'>Took it up to OD Spares who fixed it..new housing =
etcetc</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Why not a new clutch I thought? Sensible while =
you=E2=80=99re in the area looking at a 30+ yr old =
item.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>New clutch=E2=80=A6no good. Noisy, wouldn=E2=80=99t</span> =
<span style=3D'font-family:"Times New =
Roman",serif'>engage/disengage/play at =
all.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Gearbox out again.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>Refit clutch. Presumed =
I=E2=80=99d made some beginner=E2=80=99s =
mistake.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Refit gearbox=E2=80=A6no good. =
Same</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Can=E2=80=99t recall whether I tried again. Lost count and =
enthusiasm by now.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>Turned out that the new =
clutch kit was defective. (Thanks Mirek) (Genuine B&amp;B from =
AHSpares).</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>New one did work.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>Saga over until =
yesterday.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Same sort of =
symptoms=E2=80=A6..</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>All=E2=80=99s well for =
first 10 or so miles. Then the dreaded slippage(?) starts. But =
it=E2=80=99s not quite the same. Reminds me more of a slipping clutch. =
(But NO smell)</span><o:p></o:p></p><p><span style=3D'font-family:"Times =
New Roman",serif'>Symptoms continue if it=E2=80=99s in or out of =
OD.</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>Symptoms reduce at speed.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>Yes, plenty of oil. Over =
the full mark. Looks very clean. Pretty sure it=E2=80=99s 40wt</span> =
<span style=3D'font-family:"Times New Roman",serif'>non-detergent topped =
up with 30wt non-detergent. (Or vice-versa).</span> <span =
style=3D'font-family:"Times New Roman",serif'>Am confident in state of =
the filter, magnets etc.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>No, I have not pressure =
tested it yet and yes, I dread restarting the whole bloody process all =
over again. I=E2=80=99m not sure I can face taking the box out again =
once, let alone multiple times.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>What I want and experience =
tells me I=E2=80=99m unlikely to get is a miracle =
cure!</span><o:p></o:p></p><p><span style=3D'font-family:"Times New =
Roman",serif'>One initial question=E2=80=A6..do OD relays either work or =
not work? ie, can the relay hover between on and off</span> <span =
style=3D'font-family:"Times New Roman",serif'>which might lead to the OD =
coming in and out? I think that could happen if the switch is off but =
the unit still hasn=E2=80=99t got the message to disengage from the =
bulkhead switch.</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New Roman",serif'>And a =
supplementary=E2=80=A6.how</span> <span style=3D'font-family:"Times New =
Roman",serif'>do I bench test</span> <span style=3D'font-family:"Times =
New Roman",serif'>the relay?</span><o:p></o:p></p><p><span =
style=3D'font-family:"Times New =
Roman",serif'>Simon</span><o:p></o:p></p></div></blockquote></div></block=
quote></div></div></div></blockquote></div></div></div></blockquote></div=
></div></div></blockquote></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><pre>_____________________________=
__________________<o:p></o:p></pre><pre>Support Team.Net <a =
href=3D"http://www.team.net/donate.html">http://www.team.net/donate.html<=
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$12.75<o:p></o:p></pre><pre><o:p>&nbsp;</o:p></pre><pre>Archive: <a =
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ail/healeys</a> <a =
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ive/healeys</a><o:p></o:p></pre><pre><o:p>&nbsp;</o:p></pre><pre><a =
href=3D"mailto:[email-masked]">[email-masked]</a><o:p></o=
:p></pre><pre><a =
href=3D"http://autox.team.net/mailman/listinfo/healeys">http://autox.team=
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/pre><pre>Unsubscribe/Manage: <a =
href=3D"http://autox.team.net/mailman/options/healeys/[email-masked]=
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<o:p></o:p></pre><pre><o:p>&nbsp;</o:p></pre></blockquote><div><p =
class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><o:p>&nbsp;</o:p></p></div></blockquote><p=
 class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></body></html>
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From: Simon Lachlan via Healeys <[email-masked]>
Date: Sat, 27 Apr 2024 00:15:42 +0100

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Bob,

Thanks for this.

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Simon

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From: Healeys <[email-masked] =
Sent: Friday, April 26, 2024 7:17 PM
Subject: Re: [Healeys] Overdrive pressure or clutch slip Step 2!

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bs

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 Fair question.

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M

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Hi, Thanks for this.

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Simon

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M

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M

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Thanks, Simon

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Gearbox out again.

New one did work.

Simon

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Roman",serif;mso-fareast-language:EN-US'>Bob,<o:p></o:p></span></p><p =
Roman",serif;mso-fareast-language:EN-US'>Thanks for =
this.<o:p></o:p></span></p><p class=3DMsoNormal><span =
&lt;<a =
href=3D"mailto:[email-masked]">[email-masked]=
.net</a>&gt; <b>On Behalf Of </b>Bob Spidell<br><b>Sent:</b> Friday, =
April 26, 2024 7:17 PM<br><b>To:</b> <a =
href=3D"mailto:[email-masked]">[email-masked]</a>; <a =
href=3D"mailto:[email-masked]">[email-masked]</a><br><b>S=
ubject:</b> Re: [Healeys] Overdrive pressure or clutch slip Step =
brake ring to slip or disengage, no?). <o:p></o:p></p><div><p =
Healey?<br><br>bs<br><br><o:p></o:p></p></div><div><p =
.0pt'><div><div><p class=3DMsoNormal =
.0pt'><div><div><p class=3DMsoNormal =
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style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 =
level1 lfo3'><span style=3D'font-family:"Times New Roman",serif'>Removed =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 =
level1 lfo3'><span style=3D'font-family:"Times New Roman",serif'>Had a =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 =
level1 lfo3'><span style=3D'font-family:"Times New Roman",serif'>Got =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 =
level1 lfo3'><span style=3D'font-family:"Times New =
.0pt'><div><div><p class=3DMsoNormal =
.0pt'><div><p><span style=3D'font-family:"Times New Roman",serif'>You =
/a><o:p></o:p></pre><pre>Suggested annual donation&nbsp; =
.net/mailman/listinfo/healeys</a><o:p></o:p></pre><pre><o:p>&nbsp;</o:p><=
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[email-masked]

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From: Bob Spidell <[email-masked]> GFGVQLaWHbvoWWMvMXvqNyIjwAfxgC2mda0IpgP4qbCcRZKqm4Z3hSMW60il5vo5n/TkxWmhFJ/R/JW1hopsAD5aTp/0A8o3G9w=
Date: Fri, 26 Apr 2024 20:36:03 -0700

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re: "The solenoid makes a healthy click and visibly lifts the lever, say, ¼”

Sorry if this has been covered, but how did you adjust the lift on the 
operating valve? The typical 'stick a drill bit in the hole on the side 
opposite the solenoid' technique is known to be unreliable, the best way 
is to measure lift at the operating valve/shaft; 1/32" is the correct 
distance IIRC.

Bob

On 4/26/2024 4:15 PM, Simon Lachlan via Healeys wrote:
>
> Bob,
>
> Thanks for this.
>
> I’ve determined this much:-
>
> After, say, 5 miles the car started slipping in/out of OD. It was a 
> slower in/out than one would obtain with the dashboard switch. Sort of 
> slipping in/out. Not “dropping out” so far as I can determine.
>
> Per Michael’s advice, I removed the operating valve and charged 
> up/down hills and along a Motorway. No slippage. At all. I concluded 
> that the clutch on the flywheel was not slipping. (TG, as it’s 
> practically brand new).
>
> I then replaced the all the valve components under a gauge, jacked the 
> car up/wheels off the ground and spun up the engine..into gear and 
> switched on the OD. A steady 500psi which remained steady with the 
> engine off until I engaged/disengaged the OD a few times. Which, from 
> memory, is what one would expect. At this stage I cleaned out the rod. 
> No dirt detected in little hole but could easily miss a flake of paint 
> or a piece of swarf……
>
> The solenoid makes a healthy click and visibly lifts the lever, say, 
> ¼”. Appears(!) healthy. OD seems to go in and out as it should and not 
> slip but wheels are off the ground so not a fair test for slippage.
>
> The whole OD was rebuilt, by OD spares about 15 years ago since when 
> it’s had a fairly relaxed time and about 15,000 miles. Very seldom 
> more than 80mph and usually cruising at 65mph on Motorway. The front, 
> pump end, was rebuilt by ODSpares in late 2021. Car has a 28% OD and a 
> 3:54 diff so 65mph is fairly relaxed rev wise.
>
> Have not delved into Throttle Switch, Relay or Solenoid yet. Will do 
> so, in that order, when weather permits test drives.
>
> *From:*Healeys <[email-masked]> *On Behalf Of *Bob Spidell
> *Sent:* Friday, April 26, 2024 7:17 PM
> *To:* [email-masked]; [email-masked]
> *Subject:* Re: [Healeys] Overdrive pressure or clutch slip Step 2!
>
> problem is 'slippage,' which would most likely be due to wear in the 
> O/D cone clutch? Or have we determined that Simon's O/D is 'dropping 
> out' which, to my thinking, would be caused by the 8 strong springs 
>     condition and that will effectively produce overdrive when the
>     cone clutch is pushed forward in the box. When OD is *not
>     required* the solenoid is inactive and the 8 springs in the unit
>     have to keep the cone clutch in the rearward or in direct drive
>     position.
>
>     These are stout springs and normally are strong enough to engage
>     and hold the clutch without slipping, overcoming the hydraulic
>     springs are misinstalled in the wrong position or not properly
>     mounted on their tabs upon assembly or previously "coil bound"
>     from that procedure or wear, they will not function to keep direct
>     drive solid without slipping.
>
>     The clutch material should outlive all of us and is not normally,
>     or easily, replaced. All you have to keep the car in direct drive
>     are those 8 springs and their pressure.
>     needs to come out and OD removed and checked for correct spring
>     fit-at that time I would replace the 8 springs (about $100 from
>     Moss) as a routine repair. (photos from my article in AH Mag) Hank
>
>     I went through my BJ8's O/D a few years ago. The car had 64K miles
>     on it when I bought it (approx. 1984), and about 215K* miles on it
>     when I did the overhaul. The O/D cone clutch was serviceable--and
>     AFAIK didn't slip--and I reinstalled it. If new cone clutches were
>     readily available I /might/ have bought new, on principle,
>     depending on cost, but all I could find was a re-manned one from
>     DWM. To me this implied they didn't often need replacement,
>     whereas known wear items like the accumulator are offered by
>     several vendors (I would have installed one with an O-ring if I'd
>     known about it).
>
>     All this to say, unless the car has extremely high mileage and/or
>     the O/D has been abused somehow I'd be surprised if the clutch is
>     worn 'to the bone.' Obviously, slippage in the cone clutch would
>     cause Simon's car's symptoms; if so, the problem will get
>     progressively worse (and more consistent). I think one way to test
>     an O/D clutch would be to really lug the car pulling an uphill
>     grade in 4th-O/D, if the clutch is going to slip it would do it
>     then (as would a worn engine clutch). There's also a (remote)
>     possibility that, for some reason, O/D pressure fluctuates during
>     driving.
>
>
>         Between the flywheel and the rear wheels there are only 2
>         places where "slippage" can occur these are the clutch and the
>         overdrive's cone clutch.
>
>         "slippage " if they are in really bad condition but I presume
>         that isn't the case here.
>
>         The test that you just completed resulted in no driveline
>         slippage when the overdrive was disabled.
>
>         You are reporting slippage when the overdrive operating system
>         is enabled so it follows that further diagnosis of that is
>         required.
>
>         Yes, your next step would be the same test drive, i.e. full
>         engine torque on an uphill grade, to confirm that the slippage
>         issue has returned now that the overdriveoperating valvehasbe
>         re-installed.
>
>         I would do this test drive BEFORE making any adjustments to
>         the overdrive valve or solenoid in order to confirm that
>         meerly installing the overdrive operating valve resulted in
>         the slippage issue returning.
>
>             Once I’d finished the test drive with the OD operating
>             valve out of the car, I returned the rod, ball, spring etc
>             and put in the gauge rather than the nut. And got 500+ psi.
>
>             What I can’t do is understand the leap to the OD cone
>             clutch. Not arguing…just saying no comprende. As I sat in
>             the car, I was thinking that the function of the OD seems
>             OK and that it’s being interfered with by something in its
>             circuitry……relay, solenoid or throttle switch. That’s
>             probably wishful thinking as I really don’t want to be
>             swimming in those waters.
>
>             I did, as a matter of course, clean out the tiny hole in
>             the rod but didn’t detect any blockage….which doesn’t mean
>             much as something minute could have been inside and been
>             washed away by the detergent/hot water then WD40…..
>
>             After someone’s advice – some time back – I’ve got another
>             rod whose aperture has been drilled out to 1.5mm. This was
>             “to allow the OD to disengage faster”. Don’t recall if I
>             tried it. Could that rod be any help here?
>
>             The ball seems to be sitting square on its seat and the
>             tip of the rod, where the ball sits, is not worn or chipped.
>
>             Another test drive(s) seems called for. But the hood is
>             off to enable access and the forecast is grim for the next
>             week.
>
>             flywheel) nor the overdrive cone clutch (in it's normal
>             drive condition) are producing the slippage.
>
>             solenoid is *_not_* energized the slippage is occurring at
>             the overdrive cone clutch and that for some reason
>             hydraulic pressure is finding its way into the overdrive
>             The question of residual pressure can be resolved by
>             checking that the bleed hole in the bottom of the long
>             overdrive valve push rod is not blocked.
>
>             operating valve ball can be checked by ensuring that the
>             ball is clearly on its seat when the operating valve is
>             *_not _* energized.
>
>             M
>
>                 Question  ... when you got home and did the pressure
>                 test I presume that was AFTER you had put the valve
>                 with the "top hat", ball, spring and valve rod cap and
>                 washer back into position?
>
>                 M
>
>                      1. Removed the operating valve and, just for
>                         luck, disconnected the two wires into 3^rd
>                         /4^th switch. Took the car for a spin. Up/down
>                         longish/steepish hills, 10 miles on motorway.
>                         Various rpm…..no slippage at all.
>                      2. Had a puncture…..nail in tyre. Rear RHS. Flat
>                         as a pancake at once. Nearly onto rim. Nail! I
>                         imagine the inner tube is shredded and the
>                         tyre may be a write-off. (Usually are!).
>                         Anyhow, I bore you with this as I’m convinced
>                         that I’d never have got the wheel off without
>                         the little scissors jack which I carry to get
>                         the car up the first few inches until the
>                         Healey jack comes into play. Just a suggestion…….
>                         slowly once engine was off and dropped to zero
>                         as I engaged/disengaged OD a few times. Which
>                         is normal I think?
>                      4. Solenoid makes a robust “click” when it should
>                         and engages the OD when activated.
>
>                     I have been urged to check the setting of the
>                     Throttle Switch (TS). Assuming that the slippage
>                     returns (and why wouldn’t it?), I’ll short the TS
>                     out to see if that fixes it. If it does, I’ll
>                     check the adjustment.
>
>                     regardless of all that, it’s still quite a task.
>                     And, like a few of us, I’m not as young as I once
>                     was. I’ve always enjoyed the lines from the manual
>                     which I reproduce, below. ���Gently ease”!?!
>
>                     Thanks, Simon
>
>                     First you need to confirm whether the clutch (on
>                     the flywheel) or the overdrive is causing the
>                     slippage.
>
>                     To do this you ABSOLUTELY MUST disable the
>                     overdrive as a badly misadjuster overdrive
>                     operating valve can produce similar symptoms.
>
>                     valve completely. (There are other ways but this
>                     is absolutely definitive).
>
>                     Now drive the car up a long hill where you are
>                     amle to use full throttle at around 3000 RPM
>                     (maximum torque) for a few seconds. If it is the
>                     clutch (on the flywheel) that is causing the
>                     slippage these operating conditions. Test this a
>                     few times to be sure.
>
>                         On Mon., Apr. 22, 2024, 8:08 a.m. Simon
>                         Lachlan via Healeys, <[email-masked]>
>                         wrote:
>
>                             You may recall the very extended overdrive
>                             and clutch saga last year. Long story
>                             short(ish)…
>
>                             Stymied as could not get pump out. Turned
>                             out to have been “fixed” at some stage
>                             with some form of “chemical metal” which
>                             was coming loose/apart.
>
>                             Why not a new clutch I thought? Sensible
>                             while you’re in the area looking at a 30+
>                             yr old item.
>
>                             Can’t recall whether I tried again. Lost
>                             count and enthusiasm by now.
>
>                             defective. (Thanks Mirek) (Genuine B&B
>                             from AHSpares).
>
>                             New one did work.
>
>                             All’s well for first 10 or so miles. Then
>                             the dreaded slippage(?) starts. But it’s
>                             not quite the same. Reminds me more of a
>                             slipping clutch. (But NO smell)
>
>                             Yes, plenty of oil. Over the full mark.
>                             Looks very clean. Pretty sure it’s 40wt
>                             non-detergent. (Or vice-versa). Am
>                             confident in state of the filter, magnets etc.
>
>                             No, I have not pressure tested it yet and
>                             yes, I dread restarting the whole bloody
>                             process all over again. I’m not sure I can
>                             face taking the box out again once, let
>                             alone multiple times.
>
>                             between on and off which might lead to the
>                             OD coming in and out? I think that could
>                             happen if the switch is off but the unit
>                             still hasn’t got the message to disengage
>                             from the bulkhead switch.
>
>                             And a supplementary….how do I bench test
>                             the relay?
>
>                             Simon
>

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    re: "<span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">The
      solenoid makes a healthy click and visibly lifts the lever, say,
      ¼”<br>
      <br>
      Sorry if this has been covered, but how did you adjust the lift on
      the operating valve? The typical 'stick a drill bit in the hole on
      the side opposite the solenoid' technique is known to be
      unreliable, the best way is to measure lift at the operating
      valve/shaft; 1/32" is the correct distance IIRC.<br>
      <br>
      Bob<br>
    </span><br>
    <div class="moz-cite-prefix">On 4/26/2024 4:15 PM, Simon Lachlan via
      Healeys wrote:<br>
    </div>
    <blockquote type="cite"
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      <div class="WordSection1">
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">Bob,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">Thanks
            for this.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">I’ve
            determined this much:-<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">After,
            say, 5 miles the car started slipping in/out of OD. It was a
            slower in/out than one would obtain with the dashboard
            switch. Sort of slipping in/out. Not “dropping out” so far
            as I can determine.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">Per
            Michael’s advice, I removed the operating valve and charged
            up/down hills and along a Motorway. No slippage. At all. I
            concluded that the clutch on the flywheel was not slipping.
            (TG, as it’s practically brand new).<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">I
            then replaced the all the valve components under a gauge,
            jacked the car up/wheels off the ground and spun up the
            engine..into gear and switched on the OD. A steady 500psi
            which remained steady with the engine off until I
            engaged/disengaged the OD a few times. Which, from memory,
            is what one would expect. At this stage I cleaned out the
            rod. No dirt detected in little hole but could easily miss a
            flake of paint or a piece of swarf……<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">The
            solenoid makes a healthy click and visibly lifts the lever,
            say, ¼”. Appears(!) healthy. OD seems to go in and out as it
            should and not slip but wheels are off the ground so not a
            fair test for slippage. <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">The
            whole OD was rebuilt, by OD spares about 15 years ago since
            when it’s had a fairly relaxed time and about 15,000 miles.
            Very seldom more than 80mph and usually cruising at 65mph on
            Motorway. The front, pump end, was rebuilt by ODSpares in
            late 2021. Car has a 28% OD and a 3:54 diff so 65mph is
            fairly relaxed rev wise.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">Have
            not delved into Throttle Switch, Relay or Solenoid yet. Will
            do so, in that order, when weather permits test drives.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">Thank
            you everyone for your help and attention in this matter,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US">Simon<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:&quot;Times New Roman&quot;,serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <div>
          <div
style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
            <p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif"
                  lang="EN-US">From:</span></b><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif"
                lang="EN-US"> Healeys &lt;<a
                  href="mailto:[email-masked]"
                  moz-do-not-send="true" class="moz-txt-link-freetext">[email-masked]</a>&gt;
                <b>On Behalf Of </b>Bob Spidell<br>
                <b>Sent:</b> Friday, April 26, 2024 7:17 PM<br>
                <b>To:</b> <a href="mailto:[email-masked]"
                  moz-do-not-send="true" class="moz-txt-link-freetext">[email-masked]</a>;
                <a href="mailto:[email-masked]"
                  moz-do-not-send="true" class="moz-txt-link-freetext">[email-masked]</a><br>
                <b>Subject:</b> Re: [Healeys] Overdrive pressure or
                clutch slip Step 2!<o:p></o:p></span></p>
          </div>
        </div>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal" style="margin-bottom:12.0pt">I lost the
          plot (not unusual): Have we determined, for sure, that the
          problem is 'slippage,' which would most likely be due to wear
          in the O/D cone clutch? Or have we determined that Simon's O/D
          is 'dropping out' which, to my thinking, would be caused by
          the 8 strong springs overcoming hydraulic pressure (and
          causing the brake ring to slip or disengage, no?). <o:p></o:p></p>
        <div>
          <p class="MsoNormal">On 4/26/2024 10:03 AM, Hank Leach wrote:<o:p></o:p></p>
        </div>
        <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
          <div>
            <p class="MsoNormal">Ok the pressure gauge implies that the
              hydraulic system is in good condition and that will
              effectively produce overdrive when the cone clutch is
              pushed forward in the box. When OD is <strong><span
                  style="font-family:&quot;Aptos&quot;,sans-serif">not
                  required</span></strong> the solenoid is inactive and
              the 8 springs in the unit have to keep the cone clutch in
              the rearward or in direct drive position.<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal">These are stout springs and normally
              are strong enough to engage and hold the clutch without
              slipping, overcoming the hydraulic influence-which should
              be draining at this point..However if the springs are
              misinstalled in the wrong position or not properly mounted
              on their tabs upon assembly or previously "coil bound"
              from that procedure or wear, they will not function to
              keep direct drive solid without slipping.<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal" style="margin-bottom:12.0pt">The clutch
              material should outlive all of us and is not normally, or
              easily, replaced. All you have to keep the car in direct
              drive are those 8 springs and their pressure.<br>
              -Hate to say it but if the re-assembly was defective, the
              gearbox needs to come out and OD removed and checked for
              correct spring fit-at that time I would replace the 8
              springs (about $100 from Moss) as a routine repair.
              (photos from my article in AH Mag) Hank<br>
              <br>
              From: "Bob Spidell" <a href="mailto:[email-masked]"
                moz-do-not-send="true">&lt;[email-masked]&gt;</a>
              <br>
              To: <a href="mailto:[email-masked]"
                moz-do-not-send="true">&lt;[email-masked]&gt;</a>
              <br>
              Sent: April 26, 2024 at 9:37 AM PDT <br>
              Subject: Re: [Healeys] Overdrive pressure or clutch slip
              Step 2! <br>
              Spitballing ...<br>
              <br>
              I went through my BJ8's O/D a few years ago. The car had
              64K miles on it when I bought it (approx. 1984), and about
              215K* miles on it when I did the overhaul. The O/D cone
              clutch was serviceable--and AFAIK didn't slip--and I
              reinstalled it. If new cone clutches were readily
              available I <em><span
                  style="font-family:&quot;Aptos&quot;,sans-serif">might</span></em>
              have bought new, on principle, depending on cost, but all
              I could find was a re-manned one from DWM. To me this
              implied they didn't often need replacement, whereas known
              wear items like the accumulator are offered by several
              vendors (I would have installed one with an O-ring if I'd
              known about it).<br>
              <br>
              All this to say, unless the car has extremely high mileage
              and/or the O/D has been abused somehow I'd be surprised if
              the clutch is worn 'to the bone.' Obviously, slippage in
              the cone clutch would cause Simon's car's symptoms; if so,
              the problem will get progressively worse (and more
              consistent). I think one way to test an O/D clutch would
              be to really lug the car pulling an uphill grade in
              4th-O/D, if the clutch is going to slip it would do it
              then (as would a worn engine clutch). There's also a
              (remote) possibility that, for some reason, O/D pressure
              fluctuates during driving.<br>
              <br>
              <br>
              * Anyone else have this many or more known miles on a
              Healey?<br>
              <br>
              bs<br>
              <br>
              <o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal">On 4/26/2024 4:51 AM, Michael Salter
              wrote:<o:p></o:p></p>
          </div>
          <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
            <div>
              <div>
                <p class="MsoNormal"><span
style="font-size:9.5pt;font-family:&quot;Times New Roman&quot;,serif">"What
                    I can’t do is understand the leap to the OD cone
                    clutch?"</span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span
style="font-size:9.5pt;font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span
style="font-size:9.5pt;font-family:&quot;Times New Roman&quot;,serif"> Fair
                    question.</span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span
style="font-size:9.5pt;font-family:&quot;Times New Roman&quot;,serif">Between
                    the flywheel and the rear wheels there are only 2
                    places where "slippage" can occur these are the
                    clutch and the overdrive's cone clutch. </span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span
style="font-size:9.5pt;font-family:&quot;Times New Roman&quot;,serif">The
                    gearbox, other than the cone clutch in the
                    overdrive, is a go/no go arrangement, i.e. no
                    "slippage".</span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span
style="font-size:9.5pt;font-family:&quot;Times New Roman&quot;,serif">The
                    rear wheel splines, believe it or not, can also
                    produce "slippage " if they are in really bad
                    condition but I presume that isn't the case here.</span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span
style="font-size:9.5pt;font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span
style="font-size:9.5pt;font-family:&quot;Times New Roman&quot;,serif">The
                    test that you just completed resulted in no
                    driveline slippage when the overdrive was disabled. </span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span
style="font-size:9.5pt;font-family:&quot;Times New Roman&quot;,serif">You
                    are reporting slippage when the overdrive operating
                    system is enabled so it follows that further
                    diagnosis of that is required.</span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span
style="font-size:9.5pt;font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span style="font-size:9.5pt">Yes,
                    your next step would be the same test drive, i.e.
                    full engine torque on an uphill grade, to confirm
                    that the slippage issue has returned now that the
                    overdriveoperating valvehasbe re-installed.  </span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span style="font-size:9.5pt">I
                    would do this test drive BEFORE making any
                    adjustments to the overdrive valve or solenoid in
                    order to confirm that meerly installing the
                    overdrive operating valve resulted in the slippage
                    issue returning. </span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span style="font-size:9.5pt">Hope
                    the weather improves, beautiful day here.</span><o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><span style="font-size:9.5pt">M</span><o:p></o:p></p>
              </div>
            </div>
            <p class="MsoNormal"><o:p> </o:p></p>
            <div>
              <div>
                <p class="MsoNormal">On Fri., Apr. 26, 2024, 7:24 a.m.
                  Simon Lachlan, &lt;<a
                    href="mailto:[email-masked]"
                    target="_blank" moz-do-not-send="true"
                    class="moz-txt-link-freetext">[email-masked]</a>&gt;
                  wrote:<o:p></o:p></p>
              </div>
              <blockquote
style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
                <div>
                  <div>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">Hi, Thanks for
                        this.</span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">Not sure I
                        understand fully. </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">Once I’d finished
                        the test drive with the OD operating valve out
                        of the car, I returned the rod, ball, spring etc
                        and put in the gauge rather than the nut. And
                        got 500+ psi. </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">What I can’t do is
                        understand the leap to the OD cone clutch. Not
                        arguing…just saying no comprende. As I sat in
                        the car, I was thinking that the function of the
                        OD seems OK and that it’s being interfered with
                        by something in its circuitry……relay, solenoid
                        or throttle switch. That’s probably wishful
                        thinking as I really don’t want to be swimming
                        in those waters.</span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">I did, as a matter
                        of course, clean out the tiny hole in the rod
                        but didn’t detect any blockage….which doesn’t
                        mean much as something minute could have been
                        inside and been washed away by the detergent/hot
                        water then WD40…..</span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">After someone’s
                        advice – some time back – I’ve got another rod
                        whose aperture has been drilled out to 1.5mm.
                        This was “to allow the OD to disengage faster”.
                        Don’t recall if I tried it. Could that rod be
                        any help here?</span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">The ball seems to
                        be sitting square on its seat and the tip of the
                        rod, where the ball sits, is not worn or
                        chipped.</span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">Residual
                        pressure….. goes to 500+ when I switch OD ON and
                        stays there until, engine and switch OFF, I
                        energize the solenoid a few times whereupon it
                        drops to zero.</span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">Another test
                        drive(s) seems called for. But the hood is off
                        to enable access and the forecast is grim for
                        the next week.</span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">Very open to more
                        suggestions. Thanks,</span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">Simon</span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                    <div
style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
                      <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><strong><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">From:</span></strong><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">
                          Michael Salter &lt;<a
                            href="mailto:[email-masked]"
                            target="_blank" moz-do-not-send="true"
                            class="moz-txt-link-freetext">[email-masked]</a>&gt;
                          <br>
                          <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">Sent:</span></strong>
                          Friday, April 26, 2024 12:14 AM<br>
                          <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">To:</span></strong>
                          Simon Lachlan &lt;<a
href="mailto:[email-masked]" target="_blank"
                            moz-do-not-send="true"
                            class="moz-txt-link-freetext">[email-masked]</a>&gt;<br>
                          <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">Cc:</span></strong>
                          Healeys &lt;<a
                            href="mailto:[email-masked]"
                            target="_blank" moz-do-not-send="true"
                            class="moz-txt-link-freetext">[email-masked]</a>&gt;<br>
                          <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">Subject:</span></strong>
                          Re: Overdrive pressure or clutch slip Step 2!</span><o:p></o:p></p>
                    </div>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                    <div>
                      <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Okay, then it
                        is confirmed that neither the clutch (on the
                        flywheel) nor the overdrive cone clutch (in it's
                        normal drive condition) are producing the
                        slippage. <o:p></o:p></p>
                      <div>
                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">From this we
                          can conclude that even when the overdrive
                          solenoid is <strong><u><span
style="font-family:&quot;Aptos&quot;,sans-serif">not</span></u></strong>
                          energized the slippage is occurring at the
                          overdrive cone clutch and that for some reason
                          hydraulic pressure is finding its way into the
                          overdrive operating cylinders even when the
                          overdrive operating valve is closed.<o:p></o:p></p>
                      </div>
                      <div>
                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">This can be
                          caused by leakage past operating the valve or
                          residual pressure.<o:p></o:p></p>
                      </div>
                      <div>
                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The question
                          of residual pressure can be resolved by
                          checking that the bleed hole in the bottom of
                          the long overdrive valve push rod is not
                          blocked.<o:p></o:p></p>
                      </div>
                      <div>
                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Whether or
                          not hydraulic pressure is leaking past the
                          operating valve ball can be checked by
                          ensuring that the ball is clearly on its seat
                          when the operating valve is <strong><u><span
style="font-family:&quot;Aptos&quot;,sans-serif">not </span></u></strong> energized.<o:p></o:p></p>
                      </div>
                      <div>
                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                      </div>
                      <div>
                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">M<o:p></o:p></p>
                      </div>
                    </div>
                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                    <div>
                      <div>
                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Thu., Apr.
                          25, 2024, 3:38 p.m. Simon Lachlan, &lt;<a
href="mailto:[email-masked]" target="_blank"
                            moz-do-not-send="true"
                            class="moz-txt-link-freetext">[email-masked]</a>&gt;
                          wrote:<o:p></o:p></p>
                      </div>
                      <blockquote
style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
                        <div>
                          <div>
                            <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">Of course. Isn’t
                                that how I got the 520psi?</span><o:p></o:p></p>
                            <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                            <div
style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
                              <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><strong><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">From:</span></strong><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">
                                  Michael Salter &lt;<a
href="mailto:[email-masked]" target="_blank"
                                    moz-do-not-send="true"
                                    class="moz-txt-link-freetext">[email-masked]</a>&gt;
                                  <br>
                                  <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">Sent:</span></strong>
                                  Thursday, April 25, 2024 6:19 PM<br>
                                  <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">To:</span></strong>
                                  Simon Lachlan &lt;<a
href="mailto:[email-masked]" target="_blank"
                                    moz-do-not-send="true"
                                    class="moz-txt-link-freetext">[email-masked]</a>&gt;<br>
                                  <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">Cc:</span></strong>
                                  Healeys &lt;<a
                                    href="mailto:[email-masked]"
                                    target="_blank"
                                    moz-do-not-send="true"
                                    class="moz-txt-link-freetext">[email-masked]</a>&gt;<br>
                                  <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">Subject:</span></strong>
                                  Re: Overdrive pressure or clutch slip
                                  Step 2!</span><o:p></o:p></p>
                            </div>
                            <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                            <div>
                              <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Question  ...
                                when you got home and did the pressure
                                test I presume that was AFTER you had
                                put the valve with the "top hat", ball,
                                spring and valve rod cap and washer back
                                into position?<o:p></o:p></p>
                              <div>
                                <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                              </div>
                              <div>
                                <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">M<o:p></o:p></p>
                                <div>
                                  <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                                </div>
                                <div>
                                  <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                                </div>
                              </div>
                            </div>
                            <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                            <div>
                              <div>
                                <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Thu., Apr.
                                  25, 2024, 12:29 p.m. Simon Lachlan,
                                  &lt;<a
href="mailto:[email-masked]" target="_blank"
                                    moz-do-not-send="true"
                                    class="moz-txt-link-freetext">[email-masked]</a>&gt;
                                  wrote:<o:p></o:p></p>
                              </div>
                              <blockquote
style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
                                <div>
                                  <div>
                                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">So, here is
                                        Michael’s “Step 1” completed.
                                        (See his email, below).</span><o:p></o:p></p>
                                    <ol type="1" start="1">
                                      <li class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3"><span
style="font-family:&quot;Times New Roman&quot;,serif">Removed the
                                          operating valve and, just for
                                          luck, disconnected the two
                                          wires into 3<sup>rd</sup>/4<sup>th</sup>
                                          switch. Took the car for a
                                          spin. Up/down longish/steepish
                                          hills, 10 miles on motorway.
                                          Various rpm…..no slippage at
                                          all.</span><o:p></o:p></li>
                                      <li class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3"><span
style="font-family:&quot;Times New Roman&quot;,serif">Had a
                                          puncture…..nail in tyre. Rear
                                          RHS. Flat as a pancake at
                                          once. Nearly onto rim. Nail! I
                                          imagine the inner tube is
                                          shredded and the tyre may be a
                                          write-off. (Usually are!).
                                          Anyhow, I bore you with this
                                          as I’m convinced that I’d
                                          never have got the wheel off
                                          without the little scissors
                                          jack which I carry to get the
                                          car up the first few inches
                                          until the Healey jack comes
                                          into play. Just a
                                          suggestion…….</span><o:p></o:p></li>
                                      <li class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3"><span
style="font-family:&quot;Times New Roman&quot;,serif">Got home and
                                          jacked car up to test
                                          pressure. Steady at 520psi
                                          which, I recall, is plenty.
                                          Stayed at 520 across rev
                                          range. Dropped very slowly
                                          once engine was off and
                                          dropped to zero as I
                                          engaged/disengaged OD a few
                                          times. Which is normal I
                                          think?</span><o:p></o:p></li>
                                      <li class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3"><span
style="font-family:&quot;Times New Roman&quot;,serif">Solenoid makes a
                                          robust “click” when it should
                                          and engages the OD when
                                          activated.</span><o:p></o:p></li>
                                    </ol>
                                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">So what’s a
                                        sensible “Step 2”??</span><o:p></o:p></p>
                                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">I have been urged
                                        to check the setting of the
                                        Throttle Switch (TS). Assuming
                                        that the slippage returns (and
                                        why wouldn’t it?), I’ll short
                                        the TS out to see if that fixes
                                        it. If it does, I’ll check the
                                        adjustment.</span><o:p></o:p></p>
                                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">Suggestions would
                                        be more than welcome……I do dread
                                        having to take that box out
                                        again. I’ve got a very adequate
                                        ramp and a very strong
                                        volunteer(?) but, regardless of
                                        all that, it’s still quite a
                                        task. And, like a few of us, I’m
                                        not as young as I once was. I’ve
                                        always enjoyed the lines from
                                        the manual which I reproduce,
                                        below. </span><span
style="font-family:&quot;Tahoma&quot;,sans-serif">���</span><span
style="font-family:&quot;Times New Roman&quot;,serif">Gently ease”!?! </span><o:p></o:p></p>
                                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif">Thanks, Simon</span><o:p></o:p></p>
                                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-family:&quot;Times New Roman&quot;,serif"> </span><o:p></o:p></p>
                                    <div
style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
                                      <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><strong><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">From:</span></strong><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">
                                          Michael Salter &lt;<a
href="mailto:[email-masked]" target="_blank"
                                            moz-do-not-send="true"
class="moz-txt-link-freetext">[email-masked]</a>&gt; <br>
                                          <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">Sent:</span></strong>
                                          Monday, April 22, 2024 3:21 PM<br>
                                          <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">To:</span></strong>
                                          Simon Lachlan &lt;<a
href="mailto:[email-masked]" target="_blank"
                                            moz-do-not-send="true"
class="moz-txt-link-freetext">[email-masked]</a>&gt;<br>
                                          <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">Cc:</span></strong>
                                          Healeys &lt;<a
href="mailto:[email-masked]" target="_blank"
                                            moz-do-not-send="true"
class="moz-txt-link-freetext">[email-masked]</a>&gt;<br>
                                          <strong><span
style="font-family:&quot;Calibri&quot;,sans-serif">Subject:</span></strong>
                                          Re: [Healeys] Overdrive
                                          pressure or clutch slip</span><o:p></o:p></p>
                                    </div>
                                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                                    <div>
                                      <div>
                                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><strong><u><span
style="font-family:&quot;Aptos&quot;,sans-serif">Correct diagnosis is
                                                1/2 the repair!!</span></u></strong><o:p></o:p></p>
                                      </div>
                                      <div>
                                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                                      </div>
                                      <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">First you
                                        need to confirm whether the
                                        clutch (on the flywheel) or the
                                        overdrive is causing the
                                        slippage. <o:p></o:p></p>
                                      <div>
                                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">To do this
                                          you ABSOLUTELY MUST disable
                                          the overdrive as a badly
                                          misadjuster overdrive
                                          operating valve can produce
                                          similar symptoms. <o:p></o:p></p>
                                      </div>
                                      <div>
                                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">To do this I
                                          would remove the overdrive
                                          operating valve completely.
                                          (There are other ways but this
                                          is absolutely definitive).<o:p></o:p></p>
                                      </div>
                                      <div>
                                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Now drive the
                                          car up a long hill where you
                                          are amle to use full throttle
                                          at around 3000 RPM (maximum
                                          torque) for a few seconds. If
                                          it is the clutch (on the
                                          flywheel) that is causing the
                                          slippage these operating
                                          conditions. Test this a few
                                          times to be sure.<o:p></o:p></p>
                                      </div>
                                      <div>
                                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">If there is
                                          no slippage we have confirmed
                                          that the overdrive clutch is
                                          at fault.<o:p></o:p></p>
                                      </div>
                                      <div>
                                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                                      </div>
                                      <div>
                                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Step 1
                                          completed. Please report
                                          results. MS.<o:p></o:p></p>
                                      </div>
                                      <div>
                                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                                      </div>
                                      <div>
                                        <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                                      </div>
                                    </div>
                                    <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                                    <div>
                                      <blockquote
style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
                                        <div>
                                          <div>
                                            <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Mon., Apr.
                                              22, 2024, 8:08 a.m. Simon
                                              Lachlan via Healeys, &lt;<a
href="mailto:[email-masked]" target="_blank"
                                                moz-do-not-send="true"
class="moz-txt-link-freetext">[email-masked]</a>&gt; wrote:<o:p></o:p></p>
                                          </div>
                                          <blockquote
style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
                                            <div>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">You may recall the
                                                  very extended
                                                  overdrive and clutch
                                                  saga last year.</span>
                                                <span
style="font-family:&quot;Times New Roman&quot;,serif">Long story
                                                  short(ish)…</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">OD was slipping in
                                                  and out depending on
                                                  oil temperature.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Correctly
                                                  diagnosed pressure.
                                                  Checked with gauge.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Attempted
                                                  rebuild…going only so
                                                  far as</span> <span
style="font-family:&quot;Times New Roman&quot;,serif">accumulator and
                                                  related seals.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Stymied as could
                                                  not get pump out.
                                                  Turned out to have
                                                  been “fixed” at some
                                                  stage with some form
                                                  of “chemical metal”
                                                  which was coming
                                                  loose/apart.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Took it up to OD
                                                  Spares who fixed
                                                  it..new housing etcetc</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Why not a new
                                                  clutch I thought?
                                                  Sensible while you’re
                                                  in the area looking at
                                                  a 30+ yr old item.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">New clutch…no
                                                  good. Noisy, wouldn’t</span>
                                                <span
style="font-family:&quot;Times New Roman&quot;,serif">engage/disengage/play
                                                  at all.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Gearbox out again.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Refit clutch.
                                                  Presumed I’d made some
                                                  beginner’s mistake.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Refit gearbox…no
                                                  good. Same</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Can’t recall
                                                  whether I tried again.
                                                  Lost count and
                                                  enthusiasm by now.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Turned out that
                                                  the new clutch kit was
                                                  defective. (Thanks
                                                  Mirek) (Genuine
                                                  B&amp;B from
                                                  AHSpares).</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">New one did work.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Saga over until
                                                  yesterday.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Same sort of
                                                  symptoms…..</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">All’s well for
                                                  first 10 or so miles.
                                                  Then the dreaded
                                                  slippage(?) starts.
                                                  But it’s not quite the
                                                  same. Reminds me more
                                                  of a slipping clutch.
                                                  (But NO smell)</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Symptoms continue
                                                  if it’s in or out of
                                                  OD.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Symptoms reduce at
                                                  speed.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Yes, plenty of
                                                  oil. Over the full
                                                  mark. Looks very
                                                  clean. Pretty sure
                                                  it’s 40wt</span> <span
style="font-family:&quot;Times New Roman&quot;,serif">non-detergent
                                                  topped up with 30wt
                                                  non-detergent. (Or
                                                  vice-versa).</span> <span
style="font-family:&quot;Times New Roman&quot;,serif">Am confident in
                                                  state of the filter,
                                                  magnets etc.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">No, I have not
                                                  pressure tested it yet
                                                  and yes, I dread
                                                  restarting the whole
                                                  bloody process all
                                                  over again. I’m not
                                                  sure I can face taking
                                                  the box out again
                                                  once, let alone
                                                  multiple times.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">What I want and
                                                  experience tells me
                                                  I’m unlikely to get is
                                                  a miracle cure!</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">One initial
                                                  question…..do OD
                                                  relays either work or
                                                  not work? ie, can the
                                                  relay hover between on
                                                  and off</span> <span
style="font-family:&quot;Times New Roman&quot;,serif">which might lead
                                                  to the OD coming in
                                                  and out? I think that
                                                  could happen if the
                                                  switch is off but the
                                                  unit still hasn’t got
                                                  the message to
                                                  disengage from the
                                                  bulkhead switch.</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">And a
                                                  supplementary….how</span>
                                                <span
style="font-family:&quot;Times New Roman&quot;,serif">do I bench test</span>
                                                <span
style="font-family:&quot;Times New Roman&quot;,serif">the relay?</span><o:p></o:p></p>
                                              <p><span
style="font-family:&quot;Times New Roman&quot;,serif">Simon</span><o:p></o:p></p>
                                            </div>
                                          </blockquote>
                                        </div>
                                      </blockquote>
                                    </div>
                                  </div>
                                </div>
                              </blockquote>
                            </div>
                          </div>
                        </div>
                      </blockquote>
                    </div>
                  </div>
                </div>
              </blockquote>
            </div>
            <p class="MsoNormal"><o:p> </o:p></p>
            <pre>_______________________________________________<o:p></o:p></pre>
            <pre>Support Team.Net <a
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            <pre>Suggested annual donation  $12.75<o:p></o:p></pre>
            <pre><o:p> </o:p></pre>
            <pre>Archive: <a
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            <pre><o:p> </o:p></pre>
            <pre><a href="mailto:[email-masked]"
            moz-do-not-send="true" class="moz-txt-link-freetext">[email-masked]</a><o:p></o:p></pre>
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            <pre><o:p> </o:p></pre>
          </blockquote>
          <div>
            <p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
          </div>
        </blockquote>
        <p class="MsoNormal"><o:p> </o:p></p>
      </div>
      <br>
      <fieldset class="moz-mime-attachment-header"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________

Archive: <a class="moz-txt-link-freetext" href="http://www.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a> <a class="moz-txt-link-freetext" href="http://autox.team.net/archive/healeys">http://autox.team.net/archive/healeys</a>

<a class="moz-txt-link-abbreviated" href="mailto:[email-masked]">[email-masked]</a>
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</pre>
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    <br>
  </body>
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[email-masked]

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From: Simon Lachlan via Healeys <[email-masked]>
Date: Sat, 27 Apr 2024 10:53:59 +0100

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I=E2=80=99ve been back and checked. =C2=BC=E2=80=9D was just an =
arbitrary guesstimate done with finger tips. No, it moves much less.

=20

As to how I adjusted the solenoid=E2=80=99s setting, back in November =
=E2=80=9922, Michael made a couple of WhatApp calls and talked me =
through the procedure with the drill bit. (I knew how to do it but was =
getting nowhere, because of other undedected issues). Very =
kind=E2=80=A6going way beyond the call of duty. We didn=E2=80=99t get a =
good result because, as it turned out, there was a greater problem =
inside the casing.=20

=20

The springs under discussion=E2=80=A6the cone clutch =
etcetc=E2=80=A6.they were all part of the rebuild undertaken by ODSpares =
(+/- 2005). Not necessarily replaced, I suppose but (a) checked as being =
serviceable for the foreseeable long-term future and (b) they=E2=80=99ve =
worked perfectly since then (+/- =E2=80=9905) and since they rebuilt the =
pump half in late =E2=80=9922. So, I=E2=80=99m just wondering why =
they=E2=80=99d go wrong now with so little time/work and mileage.=20

=20

Simon

=20

From: Healeys <[email-masked]> On Behalf Of Bob Spidell
Sent: Saturday, April 27, 2024 4:36 AM
To: [email-masked]
Subject: Re: [Healeys] Overdrive pressure or clutch slip Step 2!

=20

re: "The solenoid makes a healthy click and visibly lifts the lever, =
say, =C2=BC=E2=80=9D

Sorry if this has been covered, but how did you adjust the lift on the =
operating valve? The typical 'stick a drill bit in the hole on the side =
opposite the solenoid' technique is known to be unreliable, the best way =
is to measure lift at the operating valve/shaft; 1/32" is the correct =
distance IIRC.

Bob

Bob,

Thanks for this.

=20

=20

=20

=20

=20

=20

Simon

=20

=20

bs

=20

 Fair question.

=20

=20

M

=20

Hi, Thanks for this.

=20

=20

=20

=20

=20

Simon

=20

=20

=20

=20

=20

=20

=20

M

=20

=20

=20

=20

M

=20

=20

=20

=20

Thanks, Simon

=20

=20

=20

=20

=20

=20

=20

Gearbox out again.

New one did work.

Simon

=20

=20

=20

=20

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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB link=3Dblue =
vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>I=E2=80=99ve been back and =
checked. =C2=BC=E2=80=9D was just an arbitrary guesstimate done with =
finger tips. No, it moves much less.<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'> As to how I adjusted the =
solenoid=E2=80=99s setting, back in November =E2=80=9922, Michael made a =
couple of WhatApp calls and talked me through the procedure with the =
drill bit. (I knew how to do it but was getting nowhere, because of =
other undedected issues). Very kind=E2=80=A6going way beyond the call of =
duty. We didn=E2=80=99t get a good result because, as it turned out, =
there was a greater problem inside the casing. <o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>The springs under =
discussion=E2=80=A6the cone clutch etcetc=E2=80=A6.they were all part of =
the rebuild undertaken by ODSpares (+/- 2005). Not necessarily replaced, =
I suppose but (a) checked as being serviceable for the foreseeable =
long-term future and (b) they=E2=80=99ve worked perfectly since then =
(+/- =E2=80=9905) and since they rebuilt the pump half in late =
=E2=80=9922. So, I=E2=80=99m just wondering why they=E2=80=99d go wrong =
now with so little time/work and mileage. <o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Simon<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><div=
0cm 0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Healeys =
&lt;[email-masked]&gt; <b>On Behalf Of </b>Bob =
Spidell<br><b>Sent:</b> Saturday, April 27, 2024 4:36 AM<br><b>To:</b> =
[email-masked]<br><b>Subject:</b> Re: [Healeys] Overdrive =
pressure or clutch slip Step 2!<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>re: &quot;<span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>The solenoid makes a healthy =
click and visibly lifts the lever, say, =C2=BC=E2=80=9D<br><br>Sorry if =
this has been covered, but how did you adjust the lift on the operating =
valve? The typical 'stick a drill bit in the hole on the side opposite =
the solenoid' technique is known to be unreliable, the best way is to =
measure lift at the operating valve/shaft; 1/32&quot; is the correct =
distance IIRC.<br><br>Bob</span><o:p></o:p></p><div><p =
class=3DMsoNormal>On 4/26/2024 4:15 PM, Simon Lachlan via Healeys =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Bob,</span><o:p></o:p></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Thanks for =
this.</span><o:p></o:p></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>I=E2=80=99ve determined this =
much:-</span><o:p></o:p></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>After, say, 5 miles the car =
started slipping in/out of OD. It was a slower in/out than one would =
obtain with the dashboard switch. Sort of slipping in/out. Not =
=E2=80=9Cdropping out=E2=80=9D so far as I can =
determine.</span><o:p></o:p></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>&nbsp;</span><o:p></o:p></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Per Michael=E2=80=99s advice, I =
removed the operating valve and charged up/down hills and along a =
Motorway. No slippage. At all. I concluded that the clutch on the =
flywheel was not slipping. (TG, as it=E2=80=99s practically brand =
new).</span><o:p></o:p></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>&nbsp;</span><o:p></o:p></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>I then replaced the all the =
valve components under a gauge, jacked the car up/wheels off the ground =
and spun up the engine..into gear and switched on the OD. A steady =
500psi which remained steady with the engine off until I =
engaged/disengaged the OD a few times. Which, from memory, is what one =
would expect. At this stage I cleaned out the rod. No dirt detected in =
little hole but could easily miss a flake of paint or a piece of =
swarf=E2=80=A6=E2=80=A6</span><o:p></o:p></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>&nbsp;</span><o:p></o:p></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>The solenoid makes a healthy =
click and visibly lifts the lever, say, =C2=BC=E2=80=9D. Appears(!) =
healthy. OD seems to go in and out as it should and not slip but wheels =
are off the ground so not a fair test for slippage. =
</span><o:p></o:p></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>&nbsp;</span><o:p></o:p></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>The whole OD was rebuilt, by OD =
spares about 15 years ago since when it=E2=80=99s had a fairly relaxed =
time and about 15,000 miles. Very seldom more than 80mph and usually =
cruising at 65mph on Motorway. The front, pump end, was rebuilt by =
ODSpares in late 2021. Car has a 28% OD and a 3:54 diff so 65mph is =
fairly relaxed rev wise.</span><o:p></o:p></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>&nbsp;</span><o:p></o:p></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Have not delved into Throttle =
Switch, Relay or Solenoid yet. Will do so, in that order, when weather =
permits test drives.</span><o:p></o:p></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>&nbsp;</span><o:p></o:p></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Thank you everyone for your =
help and attention in this matter,</span><o:p></o:p></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Simon</span><o:p></o:p></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>&nbsp;</span><o:p></o:p></p><div=
net</a>&gt; <b>On Behalf Of </b>Bob Spidell<br><b>Sent:</b> Friday, =
2!</span><o:p></o:p></p></div></div><p =
class=3DMsoNormal>&nbsp;<o:p></o:p></p><p class=3DMsoNormal =
class=3DMsoNormal>&nbsp;<o:p></o:p></p><div><div><p class=3DMsoNormal>On =
></div></div></blockquote></div><p =
class=3DMsoNormal>&nbsp;<o:p></o:p></p><pre>_____________________________=
__________________<o:p></o:p></pre><pre>Support Team.Net <a =
href=3D"http://www.team.net/donate.html">http://www.team.net/donate.html<=
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$12.75<o:p></o:p></pre><pre>&nbsp;<o:p></o:p></pre><pre>Archive: <a =
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ive/healeys</a><o:p></o:p></pre><pre>&nbsp;<o:p></o:p></pre><pre><a =
href=3D"mailto:[email-masked]">[email-masked]</a><o:p></o=
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 class=3DMsoNormal>&nbsp;<o:p></o:p></p><p =
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[email-masked]

--===============1485241203150335673==--

---

From: Simon Lachlan via Healeys <[email-masked]>
Date: Sat, 27 Apr 2024 11:06:18 +0100

--===============2758752841864395527==
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Bob,

Thanks for your efforts.

Luckily, I=E2=80=99ve been replying to the group as well as to you =
personally. And I=E2=80=99ve noted that both my last two messages direct =
to you have bounced back. Thus:-

=20

=E2=80=9C      This is an automatically generated Delivery Status =
Notification.     =20

=20

Delivery to the following recipients failed permanently:

=20

=20

Reason: A message that you sent to the following recipient could not be =
delivered due to a permanent error. ** The remote server ?? responded =
message was created automatically by mail delivery software on the =
server .=E2=80=9D

=20

Apart from the OD(!), there are no issues here. All my outgoing emails =
seem to arrive OK.

Simon

=20

.

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class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Bob,<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Thanks for your =
efforts.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Luckily, I=E2=80=99ve been =
replying to the group as well as to you personally. And I=E2=80=99ve =
noted that both my last two messages direct to you have bounced back. =
Thus:-<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoPlainText><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>=E2=80=9C</span><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
This is an automatically generated Delivery Status =
Notification.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Delivery to the following =
recipients failed permanently:<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>=C2=A0=C2=A0 * <a =
href=3D"mailto:[email-masked]"><span =
style=3D'color:#467886'>[email-masked]</span></a><o:p></o:p></span>=
</p><p class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Reason: A message that you sent =
to the following recipient could not be delivered due to a permanent =
error. ** The remote server ?? responded with: ** <a =
href=3D"mailto:[email-masked]"><span =
style=3D'color:#467886'>[email-masked]</span></a> ??:?? This =
message was created automatically by mail delivery software on the =
server .=E2=80=9D<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Apart from the OD(!), there are =
no issues here. All my outgoing emails seem to arrive =
OK.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>Simon<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif;mso-fareast-language:EN-US'>.<o:p></o:p></span></p></div></b=
ody></html>
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[email-masked]

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