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There are also O-rings on the two pistons that push against the strong
springs, disengage the cone clutch and lock the sun gear, which causes
the OD to engage. These are supplied by the accumulator when the
operating cross-shaft is rotated by the solenoid; they have rings, too;
I believe earlier cars had steel rings and later ones have rubber
O-rings. Unfortunately, the only way to inspect these pistons is
removal and break-down of the OD.
I have the DW 'uprated' accumulator--which is probably similar to if not
the same as a TR's (the liner is removed)--and it decreases OD
engagement time by at least a third.
Bob
On 4/21/2020 5:36 PM, WILLIAM B LAWRENCE wrote:
> The accumulator is in two pieces. There is an outer housing or liner
> which was used by Austin Healey to reduce the size of the accumulator
> piston and by that means the OD?s engagement force, and the smaller
> inner piston which actually stores the hydraulic force. In order to
> replace the O-rings you have to remove the housing first. To do this
> you need to block the motion of the piston. I?ve done it by holding
> the piston in place with a wooden dowel while applying air pressure to
> the control valve port. Any compressor you have should be sufficient
> to do this. Use a rag to catch the liner when it comes free as it will
> come out with some force. The liner is sealed with one O-ring on later
> ODs and that is where operating pressure is usually lost. The piston
> is sealed within the liner bore by steel rings. These are not usually
> the source of your problem.
>
> Good luck.
>
> Bill Lawrence
> BN1 #554
> ------------------------------------------------------------------------
> *From:* Healeys <healeys-bounces@autox.team.net> on behalf of Warren
> <flyhihealey@gmail.com>
> *Sent:* Tuesday, April 21, 2020 11:48 PM
> *To:* gradea1@charter.net <gradea1@charter.net>
> *Cc:* healeys@autox.team.net <healeys@autox.team.net>
> *Subject:* Re: [Healeys] Drove the Healey today?!
>
> Yes thanks for the tip. The problem is slow to engage. It was
> suggested maybe accumulator O ring. Just did pull the check valve and
> all. Did seem like dirty oil. I cleaned it all up. I?m already
> committed to extracting the accumulator and piston but wanted to
> replace all the tranny mounts and bushings which I did. Mounts were
> pretty squished and cracked. Bushings(radiator saver)were fairly solid
> but were replaced. They were the original. Cleaning and degreasing as
> I go along.
>
> If(?)it is the O ring or rings, I guess they are metal on the piston,
> I might just spring for a uprated from Dennis Welch or AH spares has a
> combo housing/piston both which have rubber O rings.
>
> Working my way to the extraction part. I want to use forced air
> through the operating valve but I only have a small air compressor for
> tires. Some kind of extraction tool would be helpful. (18G182) I have
> always changed tranny oil regularly. Used ND 30 early on. Using MT 90
> now for many years.
>
> Any and all suggestions appreciated.
>
> WD 67 BJ8
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
> Windows 10
>
> *Sent: *Tuesday, April 21, 2020 6:14 PM
> *Subject: *RE: [Healeys] Drove the Healey today?!
>
> Warren- Don't know the OD problem you are experiencing, but suggest
> before you tear into it, undo and clean the check valve and ball on
> the top right side (if you haven't already done so). One small spot of
> dirt lodged in the valve drilling can kill the hydraulics and make it
> seem like a bigger issue. It may be worn parts, but, if not, this is
> an easy first test. If it is dirt; good idea to change oil and add
> fresh SAE 30W non detergent oil to the unit. Regards, Hank,
> healeyhelper.com
>
> -----------------------------------------
>
> From: "Warren"
> To: "healeys@autox.team.net"
> Cc:
> Sent: Tuesday April 21 2020 2:36:17PM
> Subject: [Healeys] Drove the Healey today?!
>
> https://www.youtube.com/watch?v=J5L7PfKtq3s&feature=youtu.be&fbclid=IwAR15n6aDLNtzuEWNq3O09-Nh74dkR1V_nhntcmLwq0EuYzrBINYiMySW_qc
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
> Windows 10
>
> I should really get back to working on that accumulator OD problem now?
>
> WD 67 BJ8
>
>
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There are also O-rings on the two pistons that push against the
strong springs, disengage the cone clutch and lock the sun gear,
which causes the OD to engage. These are supplied by the
accumulator when the operating cross-shaft is rotated by the
solenoid; they have rings, too; I believe earlier cars had steel
rings and later ones have rubber O-rings. Unfortunately, the only
way to inspect these pistons is removal and break-down of the OD.<br>
<br>
I have the DW 'uprated' accumulator--which is probably similar to if
not the same as a TR's (the liner is removed)--and it decreases OD
engagement time by at least a third.<br>
<br>
Bob<br>
<br>
<br>
<div class="moz-cite-prefix">On 4/21/2020 5:36 PM, WILLIAM B
LAWRENCE wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CY4PR15MB1847F6C387C2E6A274AE3016A5D20@CY4PR15MB1847.namprd15.prod.outlook.com">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<div>The accumulator is in two pieces. There is an outer housing
or liner which was used by Austin Healey to reduce the size of
the accumulator piston and by that means the OD?s engagement
force, and the smaller inner piston which actually stores the
hydraulic force. In order to replace the O-rings you have to
remove the housing first. To do this you need to block the
motion of the piston. I?ve done it by holding the piston in
place with a wooden dowel while applying air pressure to the
control valve port. Any compressor you have should be sufficient
to do this. Use a rag to catch the liner when it comes free as
it will come out with some force. The liner is sealed with one
O-ring on later ODs and that is where operating pressure is
usually lost. The piston is sealed within the liner bore by
steel rings. These are not usually the source of your problem.</div>
<div><br>
</div>
<div>Good luck.</div>
<div><br>
</div>
<div>Bill Lawrence</div>
<div>BN1 #554</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>From:</b>
Healeys <a class="moz-txt-link-rfc2396E"
href="mailto:healeys-bounces@autox.team.net";><healeys-bounces@autox.team.net></a>
on behalf of
Warren <a class="moz-txt-link-rfc2396E"
href="mailto:flyhihealey@gmail.com";><flyhihealey@gmail.com></a><br>
<b>Sent:</b> Tuesday, April 21, 2020 11:48 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated"
href="mailto:gradea1@charter.net";>gradea1@charter.net</a> <a
class="moz-txt-link-rfc2396E"
href="mailto:gradea1@charter.net";><gradea1@charter.net></a><br>
<b>Cc:</b> <a class="moz-txt-link-abbreviated"
href="mailto:healeys@autox.team.net";>healeys@autox.team.net</a>
<a class="moz-txt-link-rfc2396E"
href="mailto:healeys@autox.team.net";><healeys@autox.team.net></a><br>
<b>Subject:</b> Re: [Healeys] Drove the Healey today?!</font>
<div> </div>
</div>
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<div class="x_WordSection1">
<p class="x_MsoNormal">Yes thanks for the tip. The problem is
slow to engage. It was suggested maybe accumulator O ring.
Just did pull the check valve and all. Did seem like dirty
oil. I cleaned it all up. I?m already committed to
extracting the accumulator and piston but wanted to replace
all the tranny mounts and bushings which I did. Mounts were
pretty squished and cracked. Bushings(radiator saver)were
fairly solid but were replaced. They were the original.
Cleaning and degreasing as I go along.</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">If(?)it is the O ring or rings, I guess
they are metal on the piston, I might just spring for a
uprated from Dennis Welch or AH spares has a combo
housing/piston both which have rubber O rings.
</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">Working my way to the extraction part.
I want to use forced air through the operating valve but I
only have a small air compressor for tires. Some kind of
extraction tool would be helpful. (18G182) I have always
changed tranny oil regularly. Used ND 30 early on. Using MT
90 now for many years. </p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">Any and all suggestions appreciated.</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">WD 67 BJ8</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">Sent from <a
href="https://go.microsoft.com/fwlink/?LinkId=550986";
moz-do-not-send="true">
Mail</a> for Windows 10</p>
<p class="x_MsoNormal"> </p>
<div style="border:none; border-top:solid #E1E1E1 1.0pt;
padding:3.0pt 0in 0in 0in">
<p class="x_MsoNormal" style="border:none; padding:0in"><b>From:
</b><a href="mailto:gradea1@charter.net";
moz-do-not-send="true">gradea1@charter.net</a><br>
<b>Sent: </b>Tuesday, April 21, 2020 6:14 PM<br>
<b>To: </b><a href="mailto:flyhihealey@gmail.com";
moz-do-not-send="true">Warren</a><br>
<b>Cc: </b><a href="mailto:healeys@autox.team.net";
moz-do-not-send="true">healeys@autox.team.net</a><br>
<b>Subject: </b>RE: [Healeys] Drove the Healey today?!</p>
</div>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal" style="margin-bottom:12.0pt">Warren-
Don't know the OD problem you are experiencing, but suggest
before you tear into it, undo and clean the check valve and
ball on the top right side (if you haven't already done so).
One small spot of dirt lodged in the valve drilling can kill
the hydraulics and make it seem like a bigger issue. It may
be worn parts, but, if not, this is an easy first test. If
it is dirt; good idea to change oil and add fresh SAE 30W
non detergent oil to the unit. Regards, Hank,
healeyhelper.com</p>
<p>-----------------------------------------</p>
<p class="x_MsoNormal" style="margin-bottom:12.0pt">From:
"Warren" <br>
To: <a class="moz-txt-link-rfc2396E"
href="mailto:healeys@autox.team.net";>"healeys@autox.team.net"</a><br>
Cc: <br>
Sent: Tuesday April 21 2020 2:36:17PM<br>
Subject: [Healeys] Drove the Healey today?!</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal"><a
href="https://www.youtube.com/watch?v=J5L7PfKtq3s&feature=youtu.be&fbclid=IwAR15n6aDLNtzuEWNq3O09-Nh74dkR1V_nhntcmLwq0EuYzrBINYiMySW_qc";
target="_blank"
moz-do-not-send="true">https://www.youtube.com/watch?v=J5L7PfKtq3s&feature=youtu.be&fbclid=IwAR15n6aDLNtzuEWNq3O09-Nh74dkR1V_nhntcmLwq0EuYzrBINYiMySW_qc</a></p>
<p class="x_MsoNormal">Sent from <a
href="https://go.microsoft.com/fwlink/?LinkId=550986";
moz-do-not-send="true">
Mail</a> for Windows 10</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">I should really get back to working on
that accumulator OD problem now?</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">WD 67 BJ8</p>
<p class="x_MsoNormal"> </p>
</div>
</div>
<br>
</blockquote>
<br>
</body>
</html>
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