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Re: [Healeys] Rear brake adjustment

To: Bob Spidell <bspidell@comcast.net>
Subject: Re: [Healeys] Rear brake adjustment
From: Roger Grace via Healeys <healeys@autox.team.net>
Date: Wed, 31 Mar 2021 08:47:11 -0700
Cc: Healeys <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <CALPtYiOfnGyg-H5ezNGoUNEb5Y+4Ry3Ar_jgAfo42nm9crm-pA@mail.gmail.com> <4494f800-1325-8d54-9ccb-647055af335d@comcast.net> <CALPtYiO18mPuQ1qBzKjDK0yNDXFjPYvAtFugh=gUPd5bPMJfSg@mail.gmail.com> <a6eda216-1303-3fbc-2fb3-66c407a2762d@comcast.net> <CALPtYiNq75JGezS_yCBRGQa4vc46n9auknvR=zsgfhUNUrpUSQ@mail.gmail.com> <63b0318e-7fa9-6d55-2832-1f534ef02b93@comcast.net>
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Bob,
Yes agree about the felt bushes. I assume that their only function is to
prevent metal to metal contact ?
So do the fibre tubes protrude slightly beyond the end of the pegs ?
Will try to locate something suitable.

Wonder how you adjust these pegs ?
There seems to be 3 different techniques:

The Moss method with chalk marks on the shoes.

The Salter method by adjusting in/out to each shoe edge then setting to the
mid point.

The usual  method - centering  the shoes (by stomping on the brakes) then
adjusting the peg to just make contact while shoes are clamped.

I tend to favour the last method .... ?

Tkx
rg





On Tue, Mar 30, 2021 at 9:09 PM Bob Spidell <bspidell@comcast.net> wrote:

> One more thing ...
>
> I've never liked the little felt bushes that go on the end of the shoe
> standoffs; they deteriorate as soon as they're installed (and are usually a
> gooey mess when you replace them). But, I ordered a set from Tom's Import
> Toys, but instead Tom sent some fiber tubing cut into short pieces. These
> fit perfectly and firmly over the standoffs, and you can place a little
> grease on the end and expect it to stay there. I don't know a source, the
> tubing looks like it could be small fuel line, but it's only fiber with no
> rubber or other lining.
>
> Bob
>
> On 3/30/2021 8:40 PM, Roger Grace wrote:
>
> Bob,
> Thank you - really appreciated - you are a star !
> I have now removed one side and yes I had the hooks facing out and the
> plates reversed as you did the first time.
> As you say this is not covered in the manual, and surprised that this
> issue ( tricky) is not given much coverage here - compared to say what oil
> to use in your OD !
> I tried to to get the cylinder out without removing the hyd. pipe to avoid
> bleeding but not possible to get the brake lever dislodged.
> I too will save your notes for next time...
> Tkx
> rg
>
>
>
>
>
> On Tue, Mar 30, 2021 at 7:48 PM Bob Spidell <bspidell@comcast.net> wrote:
>
>> Here's a short video of the cylinder moving (complete with 80s soundtrack
>> and modern 'shaky cam'). Pic shows the bevel on the dust cover that I think
>> proves this is the correct order of installation.
>>
>> Here's the sequence of installation that caused me the least frustration:
>>
>> 1) LIGHTLY grease all moving/sliding parts, including the adjuster cam
>> and spreaders and the shaft that the handbrake lever pivots on
>>
>> 2) Insert cylinder into its slot
>>
>> 3) Slide the spring plate, with hooks pointed toward the diff, into the
>> slot on the cylinder from above as manual shows
>>
>> 4) Insert the handbrake lever through its slot on the backplate from the
>> outside
>>
>> 5) Lift the cylinder a little with a screwdriver and slide the handbrake
>> pivot shaft into its notches on the cylinder (the spring plate allows this)
>>
>> 6) Start working the flat retaining plate with the notches into the slot
>> on the cylinder on top of the spring plate. I tapped it in; it would help
>> if someone held the handbrake lever out in its actuated state to prevent
>> the spring plate from retreating from the flat plate (it might be possible
>> to squeeze them together with a large set of channellocks). Make sure the
>> little hooks on the spring plate engage the notches on the flat plate.
>>
>> 7) Work the rubber boot/dust cover over the handbrake lever and around
>> and under the retaining plates, with the beveled edge sliding under the
>> plates (see vid).
>>
>> 8) Wipe off any excess grease (it doesn't go well with brake material)
>>
>> Credit where due: I'm often (always) disappointed with the quality of
>> aftermarket rubber products, but the dust covers I got from Moss are not
>> only molded and cut perfectly, but seem to be made of a tough rubber that
>> should actually hold up (it's almost a soft plastic).
>>
>> Bob
>>
>> ps. This is as much for my benefit, as I seem to have to do this job
>> every decade or so, and have to start from scratch procedure-wise every
>> time.
>>
>>
>> On 3/30/2021 9:52 AM, Roger Grace wrote:
>>
>> Yes thank you;  that sounds like a good explanation. As you say it is a
>> bear of a job and just working up some stamina to tackle it again !
>> rg
>>
>> On Mon, Mar 29, 2021 at 10:38 PM Bob Spidell <bspidell@comcast.net>
>> wrote:
>>
>>> re: "I note that the slave is tight on the back plate. How tight is
>>> normal floating ?"
>>>
>>> I just spent several hours on my back on a greasy floor working on my
>>> BN2's rear drums. I didn't see any text in the shop manual explaining
>>> installation; most I found was a pic in the Moss catalog showing that
>>> the curved spring, with the 'hooks,' should be installed above the
>>> cylinder (between the cylinder and the handbrake lever). First, I
>>> installed the flat plate against the backing plate with the spring plate
>>> on top of it. Not only would the cylinder not move freely--which enables
>>> the self-energizing aspect of the brakes--but the rubber dust boot had
>>> nothing to hold it in place. I then reversed the installation; i.e. the
>>> spring plate was still above the cylinder, but under the flat plate
>>> (hooks up). This way the cylinder would slide smoothly and easily, which
>>> makes sense because there is less contact area, but the rubber boot,
>>> which is beveled on the inner part fit naturally under the flat plate
>>> and would stay in place when vigorously sliding the cylinder
>>> back-and-forth. Contact surfaces were lightly greased.
>>>
>>> Short answer: the cylinder should slide smoothly and easily; otherwise
>>> the self-energizing feature could be defeated, and the cylinder could be
>>> stuck in the expanded position, which could explain your non-retracting
>>> problem.
>>>
>>> Bob
>>>
>>>
>>> On 3/29/2021 3:07 PM, Roger Grace via Healeys wrote:
>>> > BJ8 ph2.
>>> > I am Struggling to get consistent results for rear brake shoe
>>> adjustment.
>>> > All part of a project to get handbrake working properly - currently it
>>> > is almost vertical.
>>> > Background:
>>> > New shoes, slaves and springs etc with less than 4k mi. Almost no sign
>>> > of any wear yet.
>>> > Handbrake lever clevis pins removed.
>>> > Steady post adjusted so the peg just touches when brakes are adjusted
>>> > tight.
>>> > Then the adjustment set so you can just hear/feel slight brake drag.
>>> > All OK so far.
>>> >
>>> > Here is the problem:
>>> > When the handbrake lever is pushed with screwdriver or my hand it
>>> > moves with initial free play then clamps the shoes as it should.
>>> > However  when released brakes do not fully retract, and shoes bind and
>>> > not at  the same setting that started off with.
>>> > Same story with using the hydraulics; seems to hang up, in not quite
>>> > the off position. Both wheels are the same.
>>> > Shoes can be "reset"  to original setting by rattling the adjuster
>>> > back and forth in  the freeplay zone.
>>> > All looks fine when drum is off and you can see the shoe operation.
>>> >
>>> > My thoughts :
>>> > I observe that the new springs actually touch the inside of the shoes ?
>>> > Maybe some grease there ? Is this interference normal ?
>>> > Is it possible to incorrectly assemble the shoes/springs ?
>>> > See photo of RR.
>>> > I note that the slave is tight on the back plate. How tight is normal
>>> > floating ?
>>> > Maybe I assembled the slave cylinder clips incorrectly ?
>>> >
>>> > All  suggestions appreciated
>>> > rg
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>>
>>> _______________________________________________
>>> Support Team.Net http://www.team.net/donate.html
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>>>
>>> Archive: http://www.team.net/pipermail/healeys
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>>> http://autox.team.net/mailman/options/healeys/roggrace@telus.net
>>>
>>>
>>
>

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Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Bob,</div><div>Yes agree about the felt bushes. I ass=
ume that their only function is to prevent metal to metal contact ?</div><d=
iv>So do the fibre tubes protrude slightly beyond the end of the pegs ?</di=
v><div>Will try to locate something suitable.</div><div><br></div><div>Wond=
er how you adjust these pegs ?</div><div>There seems to be 3 different tech=
niques:</div><div><br></div><div>The Moss method with chalk marks on the sh=
oes. <br></div><div><br></div><div>The Salter method by adjusting in/out to=
 each shoe edge then setting to the mid point.</div><div><br></div><div>The=
 usual=C2=A0 method - centering=C2=A0 the shoes (by stomping on the brakes)=
 then adjusting the peg to just make contact while shoes are clamped.</div>=
<div><br></div><div>I tend to favour the last method .... ?<br></div><div><=
br></div><div>Tkx</div><div>rg<br></div><div><br></div><div><br></div><div>=
<br></div><div><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"l=
tr" class=3D"gmail_attr">On Tue, Mar 30, 2021 at 9:09 PM Bob Spidell &lt;<a=
 href=3D"mailto:bspidell@comcast.net";>bspidell@comcast.net</a>&gt; wrote:<b=
r></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex">
 =20
   =20
 =20
  <div>
    One more thing ...<br>
    <br>
    I&#39;ve never liked the little felt bushes that go on the end of the
    shoe standoffs; they deteriorate as soon as they&#39;re installed (and
    are usually a gooey mess when you replace them). But, I ordered a
    set from Tom&#39;s Import Toys, but instead Tom sent some fiber tubing
    cut into short pieces. These fit perfectly and firmly over the
    standoffs, and you can place a little grease on the end and expect
    it to stay there. I don&#39;t know a source, the tubing looks like it
    could be small fuel line, but it&#39;s only fiber with no rubber or
    other lining. <br>
    <br>
    Bob<br>
    <br>
    <div>On 3/30/2021 8:40 PM, Roger Grace
      wrote:<br>
    </div>
    <blockquote type=3D"cite">
     =20
      <div dir=3D"ltr">
        <div>Bob,</div>
        <div>Thank you - really appreciated - you are a star !</div>
        <div>I have now removed one side and yes I had the hooks facing
          out and the plates reversed as you did the first time.<br>
        </div>
        <div>As you say this is not covered in the manual, and surprised
          that this issue ( tricky) is not given much coverage here -
          compared to say what oil to use in your OD !</div>
        <div>I tried to to get the cylinder out without removing the
          hyd. pipe to avoid bleeding but not possible to get the brake
          lever dislodged. <br>
        </div>
        <div>I too will save your notes for next time...</div>
        <div>Tkx</div>
        <div>rg<br>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
      </div>
      <br>
      <div class=3D"gmail_quote">
        <div dir=3D"ltr" class=3D"gmail_attr">On Tue, Mar 30, 2021 at 7:48
          PM Bob Spidell &lt;<a href=3D"mailto:bspidell@comcast.net"; target=
=3D"_blank">bspidell@comcast.net</a>&gt;
          wrote:<br>
        </div>
        <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex">
          <div> Here&#39;s a short video of the cylinder moving (complete
            with 80s soundtrack and modern &#39;shaky cam&#39;). Pic shows =
the
            bevel on the dust cover that I think proves this is the
            correct order of installation.<br>
            <br>
            Here&#39;s the sequence of installation that caused me the leas=
t
            frustration:<br>
            <br>
            1) LIGHTLY grease all moving/sliding parts, including the
            adjuster cam and spreaders and the shaft that the handbrake
            lever pivots on<br>
            <br>
            2) Insert cylinder into its slot<br>
            <br>
            3) Slide the spring plate, with hooks pointed toward the
            diff, into the slot on the cylinder from above as manual
            shows<br>
            <br>
            4) Insert the handbrake lever through its slot on the
            backplate from the outside<br>
            <br>
            5) Lift the cylinder a little with a screwdriver and slide
            the handbrake pivot shaft into its notches on the cylinder
            (the spring plate allows this)<br>
            <br>
            6) Start working the flat retaining plate with the notches
            into the slot on the cylinder on top of the spring plate. I
            tapped it in; it would help if someone held the handbrake
            lever out in its actuated state to prevent the spring plate
            from retreating from the flat plate (it might be possible to
            squeeze them together with a large set of channellocks).
            Make sure the little hooks on the spring plate engage the
            notches on the flat plate.<br>
            <br>
            7) Work the rubber boot/dust cover over the handbrake lever
            and around and under the retaining plates, with the beveled
            edge sliding under the plates (see vid).<br>
            <br>
            8) Wipe off any excess grease (it doesn&#39;t go well with brak=
e
            material)<br>
            <br>
            Credit where due: I&#39;m often (always) disappointed with the
            quality of aftermarket rubber products, but the dust covers
            I got from Moss are not only molded and cut perfectly, but
            seem to be made of a tough rubber that should actually hold
            up (it&#39;s almost a soft plastic).<br>
            <br>
            Bob<br>
            <br>
            ps. This is as much for my benefit, as I seem to have to do
            this job every decade or so, and have to start from scratch
            procedure-wise every time.<br>
            <br>
            <br>
            <div>On 3/30/2021 9:52 AM, Roger Grace wrote:<br>
            </div>
            <blockquote type=3D"cite">
              <div dir=3D"ltr">
                <div>Yes thank you;=C2=A0 that sounds like a good
                  explanation. As you say it is a bear of a job and just
                  working up some stamina to tackle it again !</div>
                <div>rg<br>
                </div>
              </div>
              <br>
              <div class=3D"gmail_quote">
                <div dir=3D"ltr" class=3D"gmail_attr">On Mon, Mar 29, 2021
                  at 10:38 PM Bob Spidell &lt;<a href=3D"mailto:bspidell@co=
mcast.net" target=3D"_blank">bspidell@comcast.net</a>&gt;
                  wrote:<br>
                </div>
                <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0=
px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">re: &quot=
;I note that
                  the slave is tight on the back plate. How tight is <br>
                  normal floating ?&quot;<br>
                  <br>
                  I just spent several hours on my back on a greasy
                  floor working on my <br>
                  BN2&#39;s rear drums. I didn&#39;t see any text in the sh=
op
                  manual explaining <br>
                  installation; most I found was a pic in the Moss
                  catalog showing that <br>
                  the curved spring, with the &#39;hooks,&#39; should be
                  installed above the <br>
                  cylinder (between the cylinder and the handbrake
                  lever). First, I <br>
                  installed the flat plate against the backing plate
                  with the spring plate <br>
                  on top of it. Not only would the cylinder not move
                  freely--which enables <br>
                  the self-energizing aspect of the brakes--but the
                  rubber dust boot had <br>
                  nothing to hold it in place. I then reversed the
                  installation; i.e. the <br>
                  spring plate was still above the cylinder, but under
                  the flat plate <br>
                  (hooks up). This way the cylinder would slide smoothly
                  and easily, which <br>
                  makes sense because there is less contact area, but
                  the rubber boot, <br>
                  which is beveled on the inner part fit naturally under
                  the flat plate <br>
                  and would stay in place when vigorously sliding the
                  cylinder <br>
                  back-and-forth. Contact surfaces were lightly greased.<br=
>
                  <br>
                  Short answer: the cylinder should slide smoothly and
                  easily; otherwise <br>
                  the self-energizing feature could be defeated, and the
                  cylinder could be <br>
                  stuck in the expanded position, which could explain
                  your non-retracting <br>
                  problem.<br>
                  <br>
                  Bob<br>
                  <br>
                  <br>
                  On 3/29/2021 3:07 PM, Roger Grace via Healeys wrote:<br>
                  &gt; BJ8 ph2.<br>
                  &gt; I am Struggling to get consistent results for
                  rear brake shoe adjustment.<br>
                  &gt; All part of a project to get handbrake working
                  properly - currently it <br>
                  &gt; is almost vertical.<br>
                  &gt; Background:<br>
                  &gt; New shoes, slaves and springs etc with less than
                  4k mi. Almost no sign <br>
                  &gt; of any wear yet.<br>
                  &gt; Handbrake lever clevis pins removed.<br>
                  &gt; Steady post adjusted so the peg just touches when
                  brakes are adjusted <br>
                  &gt; tight.<br>
                  &gt; Then the adjustment set so you can just hear/feel
                  slight brake drag.<br>
                  &gt; All OK so far.<br>
                  &gt;<br>
                  &gt; Here is the problem:<br>
                  &gt; When the handbrake lever is pushed with
                  screwdriver or my hand it <br>
                  &gt; moves with initial free play then clamps the
                  shoes as it should.=C2=A0 <br>
                  &gt; However=C2=A0 when released brakes do not fully
                  retract, and shoes bind and <br>
                  &gt; not at=C2=A0 the same setting that started off with.=
<br>
                  &gt; Same story with using the hydraulics; seems to
                  hang up, in not quite <br>
                  &gt; the off position. Both wheels are the same.<br>
                  &gt; Shoes can be &quot;reset&quot;=C2=A0 to original set=
ting by
                  rattling the adjuster <br>
                  &gt; back and forth in=C2=A0 the freeplay zone.<br>
                  &gt; All looks fine when drum is off and you can see
                  the shoe operation.<br>
                  &gt;<br>
                  &gt; My thoughts :<br>
                  &gt; I observe that the new springs actually touch the
                  inside of the shoes ?<br>
                  &gt; Maybe some grease there ? Is this interference
                  normal ?<br>
                  &gt; Is it possible to incorrectly assemble the
                  shoes/springs ?<br>
                  &gt; See photo of RR.<br>
                  &gt; I note that the slave is tight on the back plate.
                  How tight is normal <br>
                  &gt; floating ?<br>
                  &gt; Maybe I assembled the slave cylinder clips
                  incorrectly ?<br>
                  &gt;<br>
                  &gt; All=C2=A0 suggestions appreciated<br>
                  &gt; rg<br>
                  &gt;<br>
                  &gt;<br>
                  &gt;<br>
                  &gt;<br>
                  &gt;<br>
                  &gt;<br>
                  &gt;<br>
                  <br>
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            </blockquote>
            <br>
          </div>
        </blockquote>
      </div>
    </blockquote>
    <br>
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</blockquote></div>

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