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<DIV dir=ltr align=left><SPAN class=432084916-06102015><FONT color=#0000ff
size=2 face=Arial>Definitely not normal. The OD should shift positively at
any engine power and gear (except 1st & reverse of course); and not drop out
unless you flip the switch, turn off the key, or shift out of
gear.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=432084916-06102015><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=432084916-06102015><FONT color=#0000ff
size=2 face=Arial>From your description, I'd guess the OD hydraulic pressure is
drastically low. Buy or build a pressure gauge (there is a special adapter
required) and check the reading. Unfortunately, you'll need to pull
the tunnel, but the good news is that the OD doesn't have to come out of the car
to check the pressure.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=432084916-06102015><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=432084916-06102015><FONT color=#0000ff
size=2 face=Arial>BTW, if I am right, then the OD clutch is slipping when it
appears to drop out of gear, and may even be slipping a little when you don't
notice. It's probably best not to use the OD until you can correct the
problem.</FONT></SPAN></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>-- Randall </FONT></DIV>
<DIV> </DIV><BR>
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<FONT size=2 face=Tahoma><B>From:</B> Triumphs
[mailto:triumphs-bounces@autox.team.net] <B>On Behalf Of </B>Rye
Livingston<BR><B>Sent:</B> Tuesday, October 06, 2015 8:54 AM<BR><B>To:</B>
fot@autox.team.net<BR><B>Cc:</B> triumphs@autox.team.net<BR><B>Subject:</B>
[TR] OD transmission<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>Looking for comments and suggestions. </DIV>
<DIV><BR></DIV>
<DIV>I just installed a TR4 rebuilt overdrive transmission in my 1960 TR3.
Everything is running well and the OD is pretty cool. I don't know
what to expect or how it should work, but this doesn't seem right to me.
When I'm up to 60 mph or so and flip the switch, it shifts into OD no
problem. If I'm accelerating at the time, it won't shift until I let up
on the gas so there isn't any load. As I experimented with this, driving
down HWY 1 along the Pacific Coast Highway, there are short rolling hills and
as I am going up the hill and flip the switch, it won't shift into OD until
again I've crested the hill and have let up on the gas a bit.</DIV>
<DIV><BR></DIV>
<DIV>Now 3rd gear, I wondered if I'd ever use OD in 3rd gear, but I do find
when driving along a 4 lane blvd with the speed about 45 mph, 3rd gear with OD
is pretty nice. So while cruising along like that when I accelerate
fairly aggressively, like an automatic transmission, without me touching the
switch, it will drop out of OD by itself as I accelerate, and when the load is
reduced as I let up on the gas, it will shift back into OD.</DIV>
<DIV><BR></DIV>
<DIV>I told the mechanic who rebuilt the transmission about this and he said
that isn't right, and his first question was if the oil level OK so I checked.
I took out the side fill plug and can see the oil level and it just
starts to ooze over the threads. So that's not the problem.</DIV>
<DIV><BR></DIV>
<DIV>What is normal shifting for an OD transmission?</DIV>
<DIV><BR></DIV>
<DIV>Thanks,</DIV>
<DIV><BR></DIV>
<DIV>Rye</DIV></BLOCKQUOTE></BODY></HTML>