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Roger,=20
Where can I get the upgraded accumulator? Thanks.=20
Regards,=20
Charlie Schott=20
----- Original Message -----
From: "Roger Grace" <roggrace@telus.net>=20
To: "Michael Salter" <michaelsalter@gmail.com>=20
Cc: healeys@autox.team.net=20
Sent: Wednesday, July 31, 2019 9:45:25 AM=20
Subject: Re: [Healeys] OD Good news Bad news=20
Replacement accumulators for type A OD's are availble, with slightly differ=
ent ID, and pistons with modern style O rings. Same OD.=20
This upgrade makes sense to me if you are replacing the accumulator.=20
rg=20
----- Original Message -----=20
From: Michael Salter <michaelsalter@gmail.com>=20
To: WILLIAM B LAWRENCE <ynotink@msn.com>=20
Cc: healeys@autox.team.net=20
Sent: Tue, 30 Jul 2019 18:20:04 -0600 (MDT)=20
Subject: Re: [Healeys] OD Good news Bad news=20
Hi Bill,=20
The accumulators in all Austin Healeys actually have cast iron piston rings=
, not "O" rings.=20
There are "O" rings between the accumulator cylinder and the overdrive body=
but they seldom give problems.=20
The overdrive piston, rings and aluminium bore frequently become badly scor=
ed and require replacement.=20
M=20
On Sat, Jun 29, 2019 at 5:05 PM WILLIAM B LAWRENCE < ynotink@msn.com > wrot=
e:=20
The accumulator in the overdrives installed in Austin Healeys have a reduce=
d bore size to moderate the force of the shift into OD. The bore sleeve or =
liner has rubber o-rings that seal the pressure in the accumulator bore. Th=
ese o-rings deteriorate with time,=20
heat, and use and then they allow oil to leak past the accumulator piston t=
hus reducing the pressure that can be developed.=20
To replace them you need to remove the side plate that holds the accumulato=
r in place, place a dowel in the piston to hold it in place and pressurize =
the OD from the actuator port valve thus forcing the sleeve out so the o-ri=
ngs can be replaced.=20
Bill Lawrence=20
BN1 #554=20
From: Healeys < healeys-bounces@autox.team.net > on behalf of Bob Spidell <=
bspidell@comcast.net >=20
Sent: Saturday, June 29, 2019 3:40 PM=20
To: healeys@autox.team.net=20
Subject: Re: [Healeys] OD Good news Bad news=20
Either the pump, actuating pistons or the accumulator. My guess would be th=
e accumulator; mine still worked at 200K miles, but the cylinder was scored=
a little from the metal rings on the piston. The actuating pistons have ru=
bber O-rings that wear so may=20
not provide enough pressure to override the heavy springs that keep the OD =
a 'single shaft' when the it's not operating. I believe the accumulator and=
pump can be replaced in situ, but I've not done it. Or some combination of=
the three. If you end up replacing=20
the accumulator I recommend the DWM 'uprated' one if you like crisp activat=
ion.=20
Check: 1) pressure at the actuating valve port (should be over 400psi at sp=
eed, but I think it'll work as low as 350--not sure), 2) that the actuating=
shaft rises the correct distance--I believe it's 1/32"--when activated. If=
you have good pressure that=20
rules out the pump. If you got the DWM accumulator, and it wasn't the probl=
em, at least you'll have a crisper OD when after you tear into it to replac=
e the O-rings.=20
I'm not surprised it disengages quickly; all the hydraulics are there to ov=
erride the 8 heavy springs; the springs shouldn't fail (it's recommended to=
replace them if you do a complete rebuild, though I'm not convinced it's e=
ntirely necessary unless the=20
OD was slipping when engaged; I think it's a 'might as well while it's on t=
he bench' thing).=20
Bob=20
ps. My stock accumulator still worked normally, and I kept it; if you want =
it I'll let it go for shipping cost.=20
On 6/29/2019 7:20 AM, Warren wrote:=20
<blockquote>
Recently had the OD quit working. First time in 52 yrs. Luck? Removed tunne=
l and checked electrics and switches and solenoid seemed to work. Some hesi=
tancy with solenoid at first. Replaced solenoid and interrupter switch as t=
hese were=20
original parts and with close to 200K on the car thought it prudent to do s=
o. Tranny oil topped off regularly and drained and cleanout of screen and m=
agnets every two years. Using Redline MT90 for many years. Before that used=
ND 30wt.=20
Now I got it to go into OD. Every time. The good news . But it takes a looo=
ong time. Many seconds. Just flip the switch at speed and =E2=80=9Ceventual=
ly=E2=80=9D it slowly slides into OD. Not crisp and instant like before. Th=
e bad news . It disengages normally as before. Flip, depress clutch slightl=
y, blip accelerator.=20
I=E2=80=99ve researched the archives as much as possible on all the forums =
but am hesitant to proceed without forum\list wisdom.=20
WD 67 BJ8=20
_______________________________________________=20
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archiv=
e=20
Healeys@autox.team.net=20
http://autox.team.net/mailman/listinfo/healeys=20
lter@gmail.com=20
</blockquote>
_______________________________________________=20
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archiv=
e=20
Healeys@autox.team.net=20
http://autox.team.net/mailman/listinfo/healeys=20
nology.net=20
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Content-Transfer-Encoding: quoted-printable
<html><body><div style=3D"font-family: times new roman, new york, times, se=
rif; font-size: 12pt; color: #000000"><div>Roger,</div><div><br></div><div>=
Where can I get the upgraded accumulator? Thanks.</div><div><br></div><div>=
Regards, </div><div><br></div><div>Charlie Schott</div><div><br></div>=
<hr id=3D"zwchr"><div style=3D"color:#000;font-weight:normal;font-style:nor=
mal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:1=
2pt;" data-mce-style=3D"color: #000; font-weight: normal; font-style: norma=
l; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-siz=
e: 12pt;"><b>From: </b>"Roger Grace" <roggrace@telus.net><br><b>To: <=
/b>"Michael Salter" <michaelsalter@gmail.com><br><b>Cc: </b>healeys@a=
utox.team.net<br><b>Sent: </b>Wednesday, July 31, 2019 9:45:25 AM<br><b>Sub=
ject: </b>Re: [Healeys] OD Good news Bad news<br><div><br></div><style> bod=
y {height: 100%; color:#000000; font-size:12pt; font-family:arial,helvetica=
,sans-serif;}</style><div>Replacement accumulators for type A OD's are avai=
lble, with slightly different ID, and pistons with modern style O rings. Sa=
me OD.<br></div><div>This upgrade makes sense to me if you are replacing th=
e accumulator.<br></div><div>rg<br></div><div><br></div><div>----- Original=
Message -----<br>From: Michael Salter <michaelsalter@gmail.com><br>T=
o: WILLIAM B LAWRENCE <ynotink@msn.com><br>Cc: healeys@autox.team.net=
<br>Sent: Tue, 30 Jul 2019 18:20:04 -0600 (MDT)<br>Subject: Re: [Healeys] O=
D Good news Bad news<br></div><div><br></div><div dir=3D"ltr"><div class=3D=
"gmail_default" style=3D"font-family: comic sans ms,sans-serif; font-size: =
small;" data-mce-style=3D"font-family: comic sans ms,sans-serif; font-size:=
small;">Hi Bill, <br></div><div class=3D"gmail_default" style=3D"font-fami=
ly: comic sans ms,sans-serif; font-size: small;" data-mce-style=3D"font-fam=
ily: comic sans ms,sans-serif; font-size: small;">The accumulators in all A=
ustin Healeys actually have cast iron piston rings, not "O" rings. <br></di=
v><div class=3D"gmail_default" style=3D"font-family: comic sans ms,sans-ser=
if; font-size: small;" data-mce-style=3D"font-family: comic sans ms,sans-se=
rif; font-size: small;">There are "O" rings between the accumulator cylinde=
r and the overdrive body but they seldom give problems.</div><div class=3D"=
gmail_default" style=3D"font-family: comic sans ms,sans-serif; font-size: s=
mall;" data-mce-style=3D"font-family: comic sans ms,sans-serif; font-size: =
small;">The overdrive piston, rings and aluminium bore frequently become ba=
dly scored and require replacement.</div><div class=3D"gmail_default" style=
=3D"font-family: comic sans ms,sans-serif; font-size: small;" data-mce-styl=
e=3D"font-family: comic sans ms,sans-serif; font-size: small;"><br></div><d=
iv class=3D"gmail_default" style=3D"font-family: comic sans ms,sans-serif; =
font-size: small;" data-mce-style=3D"font-family: comic sans ms,sans-serif;=
font-size: small;">M<br></div><div class=3D"gmail_default" style=3D"font-f=
amily: comic sans ms,sans-serif; font-size: small;" data-mce-style=3D"font-=
family: comic sans ms,sans-serif; font-size: small;"><br></div></div><div><=
br></div><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">O=
n Sat, Jun 29, 2019 at 5:05 PM WILLIAM B LAWRENCE <<a href=3D"mailto:yno=
tink@msn.com" target=3D"_blank" data-mce-href=3D"mailto:ynotink@msn.com";>yn=
otink@msn.com</a>> wrote:<br></div><blockquote class=3D"gmail_quote" sty=
le=3D"margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-le=
ft: 1ex;" data-mce-style=3D"margin: 0px 0px 0px 0.8ex; border-left: 1px sol=
id #cccccc; padding-left: 1ex;"><div dir=3D"ltr"><div style=3D"font-family:=
Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;" data-mce-s=
tyle=3D"font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: =
#000000;"><br>The accumulator in the overdrives installed in Austin Healeys=
have a reduced bore size to moderate the force of the shift into OD. The b=
ore sleeve or liner has rubber o-rings that seal the pressure in the accumu=
lator bore. These o-rings deteriorate with time,<br> heat, and use and then=
they allow oil to leak past the accumulator piston thus reducing the press=
ure that can be developed. </div><div style=3D"font-family: Calibri,He=
lvetica,sans-serif; font-size: 12pt; color: #000000;" data-mce-style=3D"fon=
t-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;"><=
br></div><div style=3D"font-family: Calibri,Helvetica,sans-serif; font-size=
: 12pt; color: #000000;" data-mce-style=3D"font-family: Calibri,Helvetica,s=
ans-serif; font-size: 12pt; color: #000000;"><br>To replace them you need t=
o remove the side plate that holds the accumulator in place, place a dowel =
in the piston to hold it in place and pressurize the OD from the actuator p=
ort valve thus forcing the sleeve out so the o-rings can be replaced.</div>=
<div style=3D"font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; c=
olor: #000000;" data-mce-style=3D"font-family: Calibri,Helvetica,sans-serif=
; font-size: 12pt; color: #000000;"><br></div><div style=3D"font-family: Ca=
libri,Helvetica,sans-serif; font-size: 12pt; color: #000000;" data-mce-styl=
e=3D"font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #00=
0000;"><br>Bill Lawrence</div><div style=3D"font-family: Calibri,Helvetica,=
sans-serif; font-size: 12pt; color: #000000;" data-mce-style=3D"font-family=
: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;"><br>BN1 #=
554 </div><div id=3D"gmail-m_-7094427575546560480appendonsend"><br></d=
iv><hr style=3D"display: inline-block; width: 98%;" data-mce-style=3D"displ=
ay: inline-block; width: 98%;"><div id=3D"gmail-m_-7094427575546560480divRp=
lyFwdMsg" dir=3D"ltr"><span style=3D"font-size: 11pt; color: #000000; font-=
family: Calibri, sans-serif;" data-mce-style=3D"font-size: 11pt; color: #00=
0000; font-family: Calibri, sans-serif;"><b>From:</b> Healeys <<a href=
=3D"mailto:healeys-bounces@autox.team.net"; target=3D"_blank" data-mce-href=
=3D"mailto:healeys-bounces@autox.team.net";>healeys-bounces@autox.team.net</=
a>> on behalf of Bob Spidell <<a href=3D"mailto:bspidell@comcast.net"=
target=3D"_blank" data-mce-href=3D"mailto:bspidell@comcast.net";>bspidell@c=
omcast.net</a>><br><b>Sent:</b> Saturday, June 29, 2019 3:40 PM<br><b>To=
:</b><a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank" data-mce-h=
ref=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a><br><b>Subj=
ect:</b> Re: [Healeys] OD Good news Bad news</span><div> </div></div><=
div style=3D"background-color: #ffffff;" data-mce-style=3D"background-color=
: #ffffff;"><p>Either the pump, actuating pistons or the accumulator. =
My guess would be the accumulator; mine still worked at 200K miles, but th=
e cylinder was scored a little from the metal rings on the piston. Th=
e actuating pistons have rubber O-rings that wear so may<br> not provide en=
ough pressure to override the heavy springs that keep the OD a 'single shaf=
t' when the it's not operating. I believe the accumulator and pump ca=
n be replaced in situ, but I've not done it. Or some combination of t=
he three. If you end up replacing<br> the accumulator I recommend the=
DWM 'uprated' one if you like crisp activation.<br></p><p>Check: 1) pressu=
re at the actuating valve port (should be over 400psi at speed, but I think=
it'll work as low as 350--not sure), 2) that the actuating shaft rises the=
correct distance--I believe it's 1/32"--when activated. If you have =
good pressure that<br> rules out the pump. If you got the DWM accumul=
ator, and it wasn't the problem, at least you'll have a crisper OD when aft=
er you tear into it to replace the O-rings.</p><p>I'm not surprised it dise=
ngages quickly; all the hydraulics are there to override the 8 heavy spring=
s; the springs shouldn't fail (it's recommended to replace them if you do a=
complete rebuild, though I'm not convinced it's entirely necessary unless =
the<br> OD was slipping when engaged; I think it's a 'might as well while i=
t's on the bench' thing).<br></p><p>Bob</p><p>ps. My stock accumulato=
r still worked normally, and I kept it; if you want it I'll let it go for s=
hipping cost.</p><p><br></p><div class=3D"gmail-m_-7094427575546560480x_moz=
-cite-prefix">On 6/29/2019 7:20 AM, Warren wrote:<br></div><blockquote><div=
class=3D"gmail-m_-7094427575546560480x_WordSection1"><p class=3D"gmail-m_-=
7094427575546560480x_MsoNormal">Recently had the OD quit working. First tim=
e in 52 yrs. Luck? Removed tunnel and checked electrics and switches and so=
lenoid seemed to work. Some hesitancy with solenoid at first. Replaced sole=
noid and interrupter switch as these were<br> original parts and with close=
to 200K on the car thought it prudent to do so. Tranny oil topped off regu=
larly and drained and cleanout of screen and magnets every two years. Using=
Redline MT90 for many years. Before that used ND 30wt.</p><p class=3D"gmai=
l-m_-7094427575546560480x_MsoNormal"> </p><p class=3D"gmail-m_-7094427=
575546560480x_MsoNormal">Now I got it to go into OD. Every time. <b><span s=
tyle=3D"text-decoration: underline;" data-mce-style=3D"text-decoration: und=
erline;">The good news</span></b><span style=3D"text-decoration: underline;=
" data-mce-style=3D"text-decoration: underline;">.</span> But it takes a lo=
ooong time. Many seconds. Just flip the switch at speed and =E2=80=9Ceventu=
ally=E2=80=9D it slowly slides into OD. Not crisp and instant like before.<=
b><span style=3D"text-decoration: underline;" data-mce-style=3D"text-decora=
tion: underline;">The bad news</span></b>. It disengages normally as before=
. Flip, depress clutch slightly, blip accelerator.</p><p class=3D"gmail-m_-=
7094427575546560480x_MsoNormal"> </p><p class=3D"gmail-m_-709442757554=
6560480x_MsoNormal">I=E2=80=99ve researched the archives as much as possibl=
e on all the forums but am hesitant to proceed without forum\list wisdom.</=
p><p class=3D"gmail-m_-7094427575546560480x_MsoNormal"> </p><p class=
=3D"gmail-m_-7094427575546560480x_MsoNormal">WD 67 =
BJ8</p><p class=3D"gmail-m_-7094427575546560480x_MsoNormal"> </p><p cl=
ass=3D"gmail-m_-7094427575546560480x_MsoNormal"> </p><br></div><pre cl=
ass=3D"gmail-m_-7094427575546560480x_moz-quote-pre"></pre></blockquote></di=
v></div><br><div><br></div>_______________________________________________<=
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