<div dir="ltr"><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">Well that's a new one on me Bob. I have installed dozens of overdrive units and never encountered that problem.</div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">Obviously it would tend to indicate some kind of dimensional difference between the 2 gearbox shafts but I'm sure that you would have checked that. <br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">Please let me know if you find out what the problem is.</div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">M<br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jun 20, 2023 at 10:15 AM <a href="mailto:warthodson@aol.com">warthodson@aol.com</a> <<a href="mailto:warthodson@aol.com">warthodson@aol.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:Comic Sans MS,sans-serif;font-size:16px"><div></div>
<div dir="ltr">Michael,</div><div dir="ltr">We do have a spare trans output shaft & we have watched your video & made a wire tool to retract the pump plunger. We have verified that the plunger is fully retracted & the splines are aligned. The spare shaft goes in about 1/2" (all the way in) further than the one that came out of the car. </div><div dir="ltr">Gary</div><div><br></div>
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On Tuesday, June 20, 2023 at 07:12:20 AM CDT, Michael Salter <<a href="mailto:michaelsalter@gmail.com" target="_blank">michaelsalter@gmail.com</a>> wrote:
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<div><div id="m_5526164326890697486ydpd0cdbba8yiv8503291482"><div><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 shape="rect" href="https://precisionsportscar.com/laycock-de-normanville-overdrive-installation-tool/" rel="nofollow" target="_blank">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 clear="none"></div><div>M</div></div><br clear="none"><div><div id="m_5526164326890697486ydpd0cdbba8yiv8503291482yqt62544"><div dir="ltr">On Mon., Jun. 19, 2023, 11:41 p.m. Bob Spidell, <<a shape="rect" href="mailto:bspidell@comcast.net" rel="nofollow" target="_blank">bspidell@comcast.net</a>> wrote:<br clear="none"></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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There is a bronze thrust washer that has to be perfectly centered to
get that last 3/4" (#148 in this diagram):<br clear="none">
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<a shape="rect" href="https://mossmotors.com/ahy-041-overdrive-unit-bn2-thru-bj8" rel="nofollow" target="_blank">https://mossmotors.com/ahy-041-overdrive-unit-bn2-thru-bj8</a><br clear="none">
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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 clear="none">
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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 clear="none">
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bs<br clear="none">
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<div>On 6/19/2023 6:18 PM, warthodson--- via
Healeys wrote:<br clear="none">
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<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>
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