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I have to chime in on issues with the A type overdrive. Thankfully I have
NO more A types to overhaul since they are a P.I.T.A. to do.
The hardest part, as stated, is lining up the 2 splines that will allow the
mainshaft to nest into the Planetary Gearset and Overrunning Clutch. You
basically need at least yourself and a helper to put it together. I
probably did 10-12 of these 2 or more years ago. First time we did one we
split the adapter plate pulling the O/D on to the transmission.
Unfortunately it was welded back together and the repair was a weak spot.
If you force the O/D onto the trans when pulling it back together with the
2 nuts on the O/D studs it will break or bend the plate.
The fasteners (6) that hold the plate to the back of the transmission are
drilled for safety wire. I used stainless safety wire on those after
torquing. Make sure you repeat the way the wire is routed through the bolt
heads. I had a couple transmissions leak because I didn't follow the
routing properly. I mistakenly routed some of the wire near the base of
the plate fouling the gasket which resulted in an embarrassing 3 comebacks
on one transmission due to leaks.
Took awhile to figure it out, dumb mistake.
Glenn 74 TR6 Restored, 68 TR250 Frame Off in Progress, 73 BMW 2002
On Thu, Sep 21, 2023 at 4:04=E2=80=AFPM Nick Black via Fot <fot@autox.team.=
net>
wrote:
> Joe
> I agree, it=E2=80=99s the bolts that hold the od plate to the transmissio=
n. I
> recall that the torque on these bolts is about 25 lbs. the bolts are
> totally soft and will stretch forever with one or two additional pounds=
=E2=80=A6
> throw them away and use Allen head bolts drilled for safety wire. The sto=
ck
> bolts stretch and the plate gets loose and leaks.
>
> Sent from the wilds of NorCal
>
> On Sep 20, 2023, at 8:52 PM, Joe Boruch via Fot <fot@autox.team.net>
> wrote:
>
> =EF=BB=BF
> I have a leaky a-type OD in my street TR4 that looks like it's leaking
> from near the adapter plate. I have never taken one apart. Can I just
> separate the OD from the trans and replace the gaskets or the adapter pla=
te
> (I've heard that Quantum Mechanics sells an uprated plate and am checking
> with John to see if he has one) and then reassemble without needing to ta=
ke
> the OD apart further? There is a youtube video that shows an OD being
> separated and it looks like it is do able.
>
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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>
>
>
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<div dir=3D"ltr"><div>I have to chime in on issues with the A type overdriv=
e. Thankfully I have NO more A types to overhaul since they are a P.I.T.A. =
to do. <br></div><div>The hardest part, as stated, is lining up the 2 splin=
es that will allow the mainshaft to nest into the Planetary Gearset and Ove=
rrunning Clutch. You basically need at least yourself and a helper to put i=
t together. I probably did 10-12 of these 2 or more years ago. First time w=
e did one we split the adapter plate pulling the O/D on to the transmission=
. Unfortunately it was welded back together and the repair was a weak spot.=
If you force the O/D onto the trans when pulling it back together with the=
2 nuts on the O/D studs it will break or bend the plate.<br></div><div><br=
></div><div>The fasteners (6) that hold the plate to the back of the transm=
ission are drilled for safety wire. I used stainless safety wire on those a=
fter torquing. Make sure you repeat the way the wire is routed through the =
bolt heads. I had a couple transmissions leak because I didn't follow t=
he routing=C2=A0 properly. I mistakenly routed some of the wire near the ba=
se of the plate fouling the gasket which resulted in an embarrassing 3 come=
backs on one transmission due to leaks.</div><div>Took awhile to figure it =
out, dumb mistake.</div><div><br></div><div>Glenn 74 TR6 Restored, 68 TR250=
Frame Off in Progress, 73 BMW 2002 <br></div><div><br></div></div><br><div=
class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Sep 21=
, 2023 at 4:04=E2=80=AFPM Nick Black via Fot <<a href=3D"mailto:fot@auto=
x.team.net">fot@autox.team.net</a>> wrote:<br></div><blockquote class=3D=
"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(2=
04,204,204);padding-left:1ex"><div dir=3D"auto">Joe=C2=A0<div>I agree, it=
=E2=80=99s the bolts that hold the od plate to the transmission. I recall t=
hat the torque on these bolts is about 25 lbs. the bolts are totally soft a=
nd will stretch forever with one or two additional pounds=E2=80=A6 throw th=
em away and use Allen head bolts drilled for safety wire. The stock bolts s=
tretch and the plate gets loose and leaks.</div><div><br><div dir=3D"ltr">S=
ent from the wilds of NorCal=C2=A0</div><div dir=3D"ltr"><br><blockquote ty=
pe=3D"cite">On Sep 20, 2023, at 8:52 PM, Joe Boruch via Fot <<a href=3D"=
mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team.net</a>> wro=
te:<br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=
=EF=BB=BF<div style=3D"font-family:Helvetica Neue,Helvetica,Arial,sans-seri=
f;font-size:13px"><div dir=3D"ltr">I have a leaky a-type OD in my street TR=
4 that looks like it's leaking from near the adapter plate.=C2=A0 I hav=
e never taken one apart.=C2=A0 Can I just separate the OD from the trans an=
d replace the gaskets or the adapter plate (I've heard that Quantum Mec=
hanics sells an uprated plate and am checking with John to see if he has on=
e) and then reassemble without needing to take the OD apart further?=C2=A0 =
There is a youtube video that shows an OD being separated and it looks like=
it is do able.=C2=A0</div></div><span></span><br><span></span><br></div></=
blockquote></div></div>_______________________________________________<br>
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/a><br>
<br>
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et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"noreferrer" targe=
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<br>
</blockquote></div>
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Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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