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TR2/3/3A Pops out of 2nd gear

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doc50

doc50

Jedi Trainee
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I'm working through my list and am down to this problem:

My rebuilt (A type OD, full synchro) trans has always popped out of 2nd gear on deceleration. It doesn't matter if I'm backing off hard or easy, it will pop out. I just have to hold back on the shift lever with a few pounds of pressure to keep it in gear.

I'm hoping it is something in the top plate that I can fix without pulling the trans. The trans was rebuilt by a shop and I acquired it with the 8 boxes of parts when I bought the project.

Thanks anyone for scratching your heads on this one.

Thom
1959 TR3
#34909L(O)
 
I'm no expert, but sounds like maybe a bad 2nd gear top hat bushing or a bad detent (plunger and spring) in the shift linkage under the top cover.

Cheers
Tush
 
The top unit will come right off. Check detents as Tush suggests. Check also for a worn fork. Tom
 
Had the same issue, I was convinced it was a broken 2nd gear bush. It wasn't. Readjusting the detent spring fixed it.
 
Thanks, guys. I'll take the top off to see if it's an easy fix.

nb: How to adjust the detent spring?

Thom
1959 TR3
#TS34909L(O)
 
In my non-OD transmission that I rebuilt in my 73 TR6, it would do just as you describe with redline fluid. Switched back to non-detergent 30 oil, and the issue went away. What fluid are you using? Cheers, Mike
 
After much discussion with Ken Gillanders (who I believe is still one of the real authorities on these cars), I went with Valvoline 20-50 Racing oil. I had to be convinced but Ken saw much less brass wear after he experimented with several types of fluids.

It sounds like this problem (and the solution) still raises questions.

Thom

1959 TR3
#TS34909L(O)
 
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