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Sorry but suggesting a replacement accumulator has me confused. If the
pressure is staying up as described surely the accumulator is not leaking
badly ... what am I missing?
M
On Mon., May 25, 2020, 12:10 a.m. Roger Grace, <roggrace@telus.net> wrote:
>
>
> As you say you need need new accumulator piston/rings/sleeve and O-Rings.
> This improved pressure on mine from 340 psi with very slow engaging to
> over 550 psi.
> Works fine now.
> Suggest that you upgrade to the modern O ring style piston instead of the
> original metal ring style.
> If you were closer could let you have the extra new spring that I have,
> but Can border closed.
> Overdrive Spares in UK are most helpful.
> Good luck ...
> rg
>
> ----- Original Message -----
> From: jpaynepbr@cox.net
> To: gradea1@charter.net
> Cc: healeys@autox.team.net
> Sent: Sun, 24 May 2020 20:21:52 -0600 (MDT)
> Subject: Re: [Healeys] Overdrive non return valve Question
>
> Shimmed the spring on the pump check valve by .08=E2=80=9D.
>
>
>
> Shope let me borrow an accumulator spring that was 3/64=E2=80=9D longer.
>
>
>
> Up to over 450+ psi now. OD will engage with the rear jacked up, but not
> while driving. On jack stands, when OD is engaged, drops to +/- 410 psi
> then quickly comes back up to 450+.
>
>
>
> Did not change out accumulator piston/rings/sleeve or O-Rings yet, was
> hoping to avoid that.
>
>
>
> Thinking about trying a 1/16=E2=80=9D washer to shim the accumulator spri=
ng or is
> it a lost cause?
>
>
>
>
>
>
>
> *From:* gradea1@charter.net <gradea1@charter.net>
> *Sent:* Sunday, May 24, 2020 10:26 AM
> *To:* 'jpaynepbr@cox.net' <jpaynepbr@cox.net>
> *Cc:* 'healeys@autox.team.net' <healeys@autox.team.net>
> *Subject:* RE: [Healeys] Overdrive non return valve Question
>
>
>
> OD Pressure should be much higher-could be 600 PSI. As I previously
> stated, be sure that the ball in the operating valve is the correct size-
> 1/4" OD in pump valve. The upper valve uses a 5/16" OD ball and you canno=
t
> mix them up, our your pressure will not be there. Too large or small a ba=
ll
> will not seat in the valve chamber. Also, if replacing with a new ball an=
d
> spring, take a brass drift and "seat" the ball in its position. What is t=
he
> condition of the piston rings and O rings...they must be up to the task a=
s
> well for them to hold that huge pressure. Use sealant on all gaskets and =
in
> addition the brake ring seal to each side of the case (ignore the passage
> in the workshop book that says no sealant there-just be careful when
> applying it). Hank
>
> -----------------------------------------
>
> From: jpaynepbr@cox.net
> To: healeys@autox.team.net
> Cc:
> Sent: Saturday May 23 2020 5:36:24PM
> Subject: [Healeys] Overdrive non return valve Question
>
> So I pressure tested the OD at the operating valve plug =E2=80=93 370 PSI=
at 1,000
> RPM in 4th. Drops to about 340 PSI when I attempt to engage the OD. OD
> did not engage.
>
> This is with the back end on jack stands (not the recalled ones!), so it
> is under no load.
>
> Held 150 PSI for about 20 minutes after being shut off and then took abou=
t
> 2 hours to drop below 100 PSI. At least I now have a better understandin=
g
> of why these things leak so badly. Who in their right mind would design
> something to hold that sort of residual oil pressure?
>
> Based on all the reading, pressure is too low, but nothing appears way of=
f?
>
> I=E2=80=99m using the Team.Net Tech site.
> http://www.team.net/www/healey/tech/big_hly/od/delborder_od.html
>
>
>
> Next step is to check the non return valve spring.
>
> Question, why would I take it to a machinist to add .084=E2=80=9D to the=
head of
> the little plunger instead of just putting a washer on the back side of t=
he
> head of the plunger?
>
> If the stem length/ insertion length into spring is that important,
> couldn=E2=80=99t I could add length to that at home with my mig welder an=
d file it
> so that the spring moves freely and doesn=E2=80=99t hang up?
>
> From the team.net site :
>
> psi, but for proper operation, the pressure should be at 470 to 490 psi.
>
> Now, finally... the OD low oil pressure cause and fix. A fatigued spring
> in the non-return valve portion of the OD (see Fig. 6.19). What? Is that
> it? You must be kidding - I waited two months for this? Yes, it does seem
> sort of anti-climactic, but this spring can cause major frustration.
> Springs are like people - as they age, they get shorter and weaker. As yo=
u
> can see in Fig. 6.19, the spring pushes against a ball and plunger. The
> purpose of this spring is to allow the ball to lift from its seat at each
> power stroke of the OD pump, allowing oil to flow into the pressurized
> accumulating chamber, [image: Image removed by sender. rework of the OD
> hydraulic pump valve]
>
>
>
>
>
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
>
> Archive: http://www.team.net/pipermail/healeys
> http://autox.team.net/archive
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com
>
>
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Content-Transfer-Encoding: quoted-printable
<div dir=3D"auto">Sorry but suggesting a replacement accumulator has me con=
fused.=C2=A0 If the pressure is staying up as described surely the accumula=
tor is not leaking badly ... what am I missing?<div dir=3D"auto">M</div></d=
iv><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On =
Mon., May 25, 2020, 12:10 a.m. Roger Grace, <<a href=3D"mailto:roggrace@=
telus.net">roggrace@telus.net</a>> wrote:<br></div><blockquote class=3D"=
gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-=
left:1ex"><div><div><br></div><div><br></div><div></div><div>As you say you=
need need new accumulator piston/rings/sleeve and O-Rings.<br></div><div>T=
his improved pressure on mine from 340 psi with very slow engaging to over =
550 psi. <br></div><div>Works fine now.<br></div><div>Suggest that you upgr=
ade to the modern O ring style piston instead of the original metal ring st=
yle.<br></div><div>If you were closer could let you have the extra new spri=
ng that I have, but Can border closed.<br></div><div>Overdrive Spares in UK=
are most helpful.<br></div><div>Good luck ...<br></div><div>rg<br></div><d=
iv><br></div><div>----- Original Message -----<br>From: <a href=3D"mailto:j=
paynepbr@cox.net" target=3D"_blank" rel=3D"noreferrer">jpaynepbr@cox.net</a=
><br>To: <a href=3D"mailto:gradea1@charter.net"; target=3D"_blank" rel=3D"no=
referrer">gradea1@charter.net</a><br>Cc: <a href=3D"mailto:healeys@autox.te=
am.net" target=3D"_blank" rel=3D"noreferrer">healeys@autox.team.net</a><br>=
Sent: Sun, 24 May 2020 20:21:52 -0600 (MDT)<br>Subject: Re: [Healeys] Overd=
rive non return valve Question<br></div><div><br></div><div><p class=3D"Mso=
Normal">Shimmed the spring on the pump check valve by .08=E2=80=9D.=C2=A0</=
p><p class=3D"MsoNormal">=C2=A0</p><p class=3D"MsoNormal">Shope let me borr=
ow an accumulator spring that was 3/64=E2=80=9D longer.</p><p class=3D"MsoN=
ormal">=C2=A0</p><p class=3D"MsoNormal">Up to over 450+ psi now.=C2=A0 OD w=
ill engage with the rear jacked up, but not while driving.=C2=A0 On jack st=
ands, when OD is engaged, drops to +/- 410 psi then quickly comes back up t=
o 450+.</p><p class=3D"MsoNormal">=C2=A0</p><p class=3D"MsoNormal">Did not =
change out accumulator piston/rings/sleeve or O-Rings yet, was hoping to av=
oid that.</p><p class=3D"MsoNormal">=C2=A0</p><p class=3D"MsoNormal">Thinki=
ng about trying a 1/16=E2=80=9D washer to shim the accumulator spring or is=
it a lost cause?=C2=A0</p><p class=3D"MsoNormal">=C2=A0</p><p class=3D"Mso=
Normal">=C2=A0</p><p class=3D"MsoNormal">=C2=A0</p><div><div style=3D"borde=
r:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><p class=
=3D"MsoNormal"><b>From:</b> <a href=3D"mailto:gradea1@charter.net"; target=
=3D"_blank" rel=3D"noreferrer">gradea1@charter.net</a> <<a href=3D"mailt=
o:gradea1@charter.net" target=3D"_blank" rel=3D"noreferrer">gradea1@charter=
.net</a>> <br><b>Sent:</b> Sunday, May 24, 2020 10:26 AM<br><b>To:</b> &=
#39;<a href=3D"mailto:jpaynepbr@cox.net"; target=3D"_blank" rel=3D"noreferre=
r">jpaynepbr@cox.net</a>' <<a href=3D"mailto:jpaynepbr@cox.net"; targ=
et=3D"_blank" rel=3D"noreferrer">jpaynepbr@cox.net</a>><br><b>Cc:</b> &#=
39;<a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank" rel=3D"noref=
errer">healeys@autox.team.net</a>' <<a href=3D"mailto:healeys@autox.=
team.net" target=3D"_blank" rel=3D"noreferrer">healeys@autox.team.net</a>&g=
t;<br><b>Subject:</b> RE: [Healeys] Overdrive non return valve Question</p>=
</div></div><p class=3D"MsoNormal">=C2=A0</p><p class=3D"MsoNormal" style=
=3D"margin-bottom:12.0pt">OD Pressure should be much higher-could be 600 PS=
I. As I previously stated, be sure that the ball in the operating valve is =
the correct size- 1/4" OD in pump valve. The upper valve uses a 5/16&q=
uot; OD ball and you cannot mix them up, our your pressure will not be ther=
e. Too large or small a ball will not seat in the valve chamber. Also, if r=
eplacing with a new ball and spring, take a brass drift and "seat"=
; the ball in its position. What is the condition of the piston rings and O=
rings...they must be up to the task as well for them to hold that huge pre=
ssure. Use sealant on all gaskets and in addition the brake ring seal to ea=
ch side of the case (ignore the passage in the workshop book that says no s=
ealant there-just be careful when applying it). Hank</p><p>----------------=
-------------------------</p><p class=3D"MsoNormal">From: <a href=3D"mailto=
:jpaynepbr@cox.net" target=3D"_blank" rel=3D"noreferrer">jpaynepbr@cox.net<=
/a><br>To: <a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank" rel=
=3D"noreferrer">healeys@autox.team.net</a><br>Cc: <br>Sent: Saturday May 23=
2020 5:36:24PM<br>Subject: [Healeys] Overdrive non return valve Question<b=
r></p><div><br></div><p class=3D"MsoNormal"><span style=3D"font-size:12.0pt=
;font-family:'Times New Roman',serif">So I pressure tested the OD a=
t the operating valve plug =E2=80=93 370 PSI at 1,000 RPM in 4<sup>th</sup>=
.=C2=A0=C2=A0 Drops to about 340 PSI when I attempt to engage the OD. OD di=
d not engage.</span></p><p class=3D"MsoNormal"><span style=3D"font-size:12.=
0pt;font-family:'Times New Roman',serif">This is with the back end =
on jack stands (not the recalled ones!), so it is under no load.</span></p>=
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:'Tim=
es New Roman',serif">Held 150 PSI for about 20 minutes after being shut=
off and then took about 2 hours to drop below 100 PSI.=C2=A0 At least I no=
w have a better understanding of why these things leak so badly.=C2=A0 Who =
in their right mind would design something to hold that sort of residual oi=
l pressure?</span></p><p class=3D"MsoNormal"><span style=3D"font-size:12.0p=
t;font-family:'Times New Roman',serif">Based on all the reading, pr=
essure is too low, but nothing appears way off?</span></p><p class=3D"MsoNo=
rmal"><span style=3D"font-size:12.0pt;font-family:'Times New Roman'=
,serif">I=E2=80=99m using the Team.Net Tech site.=C2=A0=C2=A0=C2=A0 <a href=
=3D"http://www.team.net/www/healey/tech/big_hly/od/delborder_od.html"; targe=
t=3D"_blank" rel=3D"noreferrer">http://www.team.net/www/healey/tech/big_hly=
/od/delborder_od.html</a></span><br></p><p class=3D"MsoNormal"><span style=
=3D"font-size:12.0pt;font-family:'Times New Roman',serif">=C2=A0</s=
pan></p><p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:=
'Times New Roman',serif">Next step is to check the non return valve=
spring. </span></p><p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;=
font-family:'Times New Roman',serif">=C2=A0Question, why would I ta=
ke it to a machinist to add .084=E2=80=9D to the head of the little plunger=
instead of just putting a washer on the back side of the head of the plung=
er?=C2=A0 </span></p><p class=3D"MsoNormal"><span style=3D"font-size:12.0pt=
;font-family:'Times New Roman',serif">If the stem length/ insertion=
length into spring is that important, couldn=E2=80=99t I could add length =
to that at home with my mig welder and file it so that the spring moves fre=
ely and doesn=E2=80=99t hang up?=C2=A0 </span></p><p class=3D"MsoNormal"><s=
pan style=3D"font-size:12.0pt;font-family:'Times New Roman',serif">=
>From the <a href=3D"http://team.net"; target=3D"_blank" rel=3D"noreferrer">t=
eam.net</a> site :</span></p><p class=3D"MsoNormal"><span style=3D"font-siz=
e:12.0pt;font-family:'Times New Roman',serif">psi, but for proper o=
peration, the pressure should be at 470 to 490 psi.</span></p><p class=3D"M=
soNormal"><span style=3D"font-size:12.0pt;font-family:'Times New Roman&=
#39;,serif">Now, finally... the OD low oil pressure cause and fix. A <span =
style=3D"text-decoration:underline">fatigued spring in the non-return valve=
portion of the OD</span> (see Fig. 6.19). What? Is that it? You must be ki=
dding - I waited two months for this? Yes, it does seem sort of anti-climac=
tic, but this spring can cause major frustration. Springs are like people -=
as they age, they get shorter and weaker. As you can see in Fig. 6.19, the=
spring pushes against a ball and plunger. The purpose of this spring is to=
allow the ball to lift from its seat at each power stroke of the OD pump, =
allowing oil to flow into the pressurized accumulating chamber, </span><spa=
n style=3D"border:solid windowtext 1.0pt;padding:0in"><img style=3D"width:3=
.8956in;height:3.7043in" id=3D"m_-5883881541091706504Picture_x0020_5" src=
=3D"#m_-5883881541091706504_" alt=3D"Image removed by sender. rework of the=
OD hydraulic pump valve" width=3D"374" height=3D"356" border=3D"0"></span>=
</p><p class=3D"MsoNormal">=C2=A0</p><p class=3D"MsoNormal">=C2=A0</p></div=
><div><br></div><div><br></div></div>______________________________________=
_________<br>
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