<html><body>Rafael- Unfortunately, I think you need to dismantle the OD for a third time. Attached is a chart showing the cause for "clutch slip in reverse" from the workshop book pg. G/6.<div><br></div><div>I feel very strongly that you have reversed, or damaged, the 8 clutch springs surrounding the cone clutch-4 short and 4 long. You must follow the procedure as described on pg. G/10 for assembly of the springs. If that is not the issue than only hydraulic problems exist, but your reverse problems sounds like a mechanical issue. </div><div><br></div><div>While apart, clean the operating valve assembly, and check to be sure that the ball #18 under the plunger has not been reversed with the #58 ball in the pump. Hank<br><br><div class="reply-new-signature"></div><p>-----------------------------------------</p>From: "Bluehealey" <bluehealey@gmail.com><br>To: "Autox Healeys"<br>Cc: "Rafael Abugattas"<br>Sent: Friday May 21 2021 12:56:37AM<br>Subject: Re: [Healeys] Transmission / Overdrive or Clutch slippage<br><br>
Team.
<div>Coming at this from a different angle, the OP states that the
car doesn’t move in reverse. This is usually a problem with the
uni-directional (sprag) clutch. Could it be that O/d is
permanently engaged somehow rather than failing to engage?</div>
<div>Just a SWAG.<br><br><div dir="ltr">Alan - from my iPad</div>
<div dir="ltr"><br><blockquote>On 21 May 2021, at 04:23, Henry G Leach via
Healeys <healeys@autox.team.net> wrote:<br><br></blockquote>
</div>
<blockquote>
<div dir="ltr">Rafael-a few comments about your issues. I coming
from a different place by assuming that the cone clutch is ok.
<div><br></div>
<div>First, what oil is in the gearbox and transmission?-only use
30W NON detergent-all others will foam...especially with the
addition of heat.</div>
<div><br></div>
<div>When the OD was rebuilt- there are two sets of springs of the
8...4 are 4-1/4" and 4 are 4-1/2" the longer springs must go to the
outside and the shorter to the inside of the cone structure. If the
springs are coil bound from misuse-replace them. If they are
reversed the pressure to hold the clutch in direct drive is not
sufficient.</div>
<div><br></div>
<div>The overdrive must achieve at least 400lbs of pressure at all
times in use. The low numbers indicate an accumulator issue.
O-rings or piston rings worn or misplaced.</div>
<div><br></div>
<div>It is exteamely important that the car never goes into reverse
with the overdrive engaged. Make sure the lockout switch is
working.</div>
<div><br></div>
<div>Be sure the two check balls are in proper place 1/4" and 5/16"
do not mix them up with each other.</div>
<div><br></div>
<div>Has your OD rebuilder done other Laycock overdrives?
Hank</div>
<div><br></div>
<div><br><br><div class="reply-new-signature"></div>
<p>-----------------------------------------</p>
From: "Rafael Abugattas via Healeys"<br>
To: "healeys@autox.team.net"<br>
Cc:<br>
Sent: Thursday May 20 2021 2:47:20PM<br>
Subject: [Healeys] Transmission / Overdrive or Clutch slippage<br><br><div class="yahoo-style-wrap" style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;">
<div dir="ltr">
<div>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">Hi
all,</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">Last year I
requested your help regarding a strange overdrive or slippage
problem I have in my 1962 Tricarb BT7.</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">I received very
valuable comments and suggestions but sadly the problem persists:
Overdrive would not activate under any circumstances and when the
engine / transmission is warm and we engage reverse, the engine
revs but the car won´t move.</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">There is slippage
somewhere in the transmission / clutch or overdrive. When the car
is cold, reverse engages without any issues. This only happens in
reverse gear after the car has been driven a few miles and the
engine and transmission are warm. Forward gears engage all the time
without any issues.</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">The car has been
recently restored. Before the restoration the overdrive was
operational. Now it’s not.</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">The transmission
and overdrive have been taken apart and assembled twice looking for
something visually wrong. Everything seemed to be OK.</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">The clutch and
plate were also removed for inspection. The clutch was recently
redone, adjusted and tested.</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">A friend
suggested we should verify the oil pressure on the overdrive. On
this link you will find a couple of videos of a test we have
recently done with a manometer installed on the overdrive to check
the oil pressure at different RPM´s.</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;"><a href="https://www.dropbox.com/sh/t5p8kqz6v6yduyt/AADizyVMyBKPozy284B-udA4a?dl=0">
</a><a href="https://www.dropbox.com/sh/t5p8kqz6v6yduyt/AADizyVMyBKPozy284B-udA4a?dl=0"></a><a href="https://www.dropbox.com/sh/t5p8kqz6v6yduyt/AADizyVMyBKPozy284B-udA4a?dl=0">https://www.dropbox.com/sh/t5p8kqz6v6yduyt/AADizyVMyBKPozy284B-udA4a?dl=0</a></span></p>
<p class="ydpfe39e09bMsoNormal"><span>The pressure on 3rd and 4th
gears goes up to 400 psi and drops as it goes to lower gears. At
idle is between 150 to 200 psi</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">In forward gears
the car runs fine; the problem that we need to solve is that the
overdrive would not activate(even though it is connected and
everything seems visually OK) and the slippage we have when
engaging reverse (the car won´t move) when the engine /
transmission is warm.</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">We are located in
Lima – Peru and as you may imagine, there are not many experts in
this particular area of expertise.</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">Any thoughts or
suggestions from you collective knowledge and wisdom on how to
proceed will be much appreciated.</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;"><span style="font-size:11pt;font-family:Calibri, sans-serif;">Thanks in
advance!</span></p>
<p class="ydpfe39e09bxyiv3660242746msonormal" style="background:#ffffff;word-spacing:0px;"><span lang="es-mx" style="font-size:11pt;font-family:Calibri, sans-serif;">Rafael</span></p>
<p class="ydpfe39e09bMsoNormal"> </p>
</div>
<br></div>
</div>
</div>
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