<html><body>Agree with Michael- dummy or old mainshaft is essential to line up innards then if cam is correctly placed-facing rear, and plunger is tied back, units go together easily by a slight wiggle of 1st motion (in gear) and tailshaft first insuring that the 8 springs are all on their pegs-easy huh? Its about procedure. Article Im composing on overdrive will be in upcoming AH Mag. Hank<br><br><div class="reply-new-signature"></div><p>-----------------------------------------</p>From: "Michael Salter" <michaelsalter@gmail.com><br>To: "Bob Spidell"<br>Cc: "healeys@autox.team.net"<br>Sent: Tuesday June 20 2023 5:01:51AM<br>Subject: Re: [Healeys] Mating the overdrive to the transmission<br><br>
<div>Although one may be difficult to find there is no
substitute for a spare gearbox 3rd motion shaft for this job.
<div>The spare shaft is used to align all the internals
then, using my special tool to hold the pump plunger
retracted</div>
<div><a href="https://precisionsportscar.com/laycock-de-normanville-overdrive-installation-tool/">
</a><a href="https://precisionsportscar.com/laycock-de-normanville-overdrive-installation-tool/">https://precisionsportscar.com/laycock-de-normanville-overdrive-installation-tool/</a></div>
<div> it is a simple task to lower the overdrive
onto the gearbox. </div>
<div><br></div>
<div>M</div>
</div>
<br><div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon., Jun. 19, 2023, 11:41
p.m. Bob Spidell, <<a>bspidell@comcast.net</a>>
wrote:<br></div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>There is a bronze thrust washer that has to be perfectly
centered to get that last 3/4" (#148 in this diagram):<br><br><a href="https://mossmotors.com/ahy-041-overdrive-unit-bn2-thru-bj8"></a><a href="https://mossmotors.com/ahy-041-overdrive-unit-bn2-thru-bj8">https://mossmotors.com/ahy-041-overdrive-unit-bn2-thru-bj8</a><br><br>
You can wiggle it around with a long screwdriver, or use a suitable
'drift' to center it. Your best bet is to sit the O/D on end and
lower the gearbox onto it; gently rotating the gearbox while
lowering. First time I did this I must have got lucky, but danged
if I can explain this (see attached photo). Most recently I fought
for a couple days then threw in the towel and took gearbox and O/D
to BCS which, fortunately, is only a half-hour away. David and his
mechanics had a novel technique I've not heard described anywhere;
basically, he removed the pump completely--it's only two screws
IIRC--and split the O/D into front and rear sections and tipped the
gearbox and O/D up--gearbox on bottom--then had two of his
mechanics pull the sections together with huge channellock pliers
while David rotated the output shaft to 'feel it in' (you had to be
there).<br><br>
Good luck. Make triply sure you have the pump cam oriented
correctly, or you'll get more experience with this process than you
probably want.<br><br>
bs<br><br><div>On 6/19/2023 6:18 PM, warthodson--- via Healeys
wrote:<br></div>
<blockquote>
<div style="font-family:'Comic Sans MS', sans-serif;font-size:16px;">
<div dir="ltr">I spent the day assisting a friend trying to mate
his OD to his transmission. The car is a '63 BJ7. The overdrive &
Trans. were pulled to replace a few internal trans parts which was
done & we did not run into any issues. We can get the OD to within
approx. 1/2-3/4" of mating to the trans, but cannot close that gap.
We have confirmed that the oil pump roller has been fully
retracted. What are we bumping up against & how do we get past
it?</div>
<div dir="ltr">Gary Hodson</div>
</div>
<br></blockquote>
<br></div>
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