Tom Parker writes:
>Hi,
>
>I'm subscribing on behalf of my mate John who has a problem.
<<<<<<<<<<<<<<<<<<< Snip >>>>>>>>>>>>>>>>>>>>>
>Today he was doing some reversing (as you do) when there was a BANG and
the
>transmission locked up. There doesn't appear to be anything wrong with the
>selector mechanisim, he can select all gears and the forward ones work,
>however in reverse gear he gets less than a foot backwards before it locks
up
>solid.
>The other problem is the overdrive never worked. The electrics weren't
hooked
>up in the donor car, and in his car it doesn't work. It is a J type
overdrive
>and has a solinoid on the bottom right (as you lie underneigth it). One
>terminal on the solinoid is earthed straight to the transmission case. the
>other terminal is free. Connecting this terminal to the battery results in
a
>some sparks and a small. Doing it while the car is in motion has no effect
on
>the gearing.
>
>The gearbox is not totally full of oil but is within a centimetre of the
>filling plug.
>We are going to remove the gearbox and hopefully repair it using parts
from
>the first gearbox that died (I'm fairly sure it was the first motion shaft
>bearing that went).
>Does anyone have any ideas about what has happened to it? I've seen some
stuff
>in the archives that suggests going backwards with the overdrive engaged
is a
>very bad idea. We didn't do this, but the overdrive isn't working properly
so
>who knows what is going on with it.
Tom,
You should pack it up and sell it to some american for big US $$$'s. Just
kidding.
Seriously, once you get it out of the car select fourth gear and turn the
input shaft
by hand and watch the output flang. The output should turn exactly once
for each
turn of the input shaft. If you get 1 and then some then I would say your
OD is stuck
in the OD position. Its happened to us an a couple of ocasions. Once on a
TR6
(A-type) and a couple of times on an Austin Healey (also A-type). A locked
OD
can cause the described symptom.
>I've rebuilt a Mini gearbox, and accessing reverse gear requires the
complete
>dismantling of the gearbox, is this going to be the case with the triumph
>unit?
Yep, same here although the lay gear can stay put. There ain't no short
cuts
with transmissions.
>- --
>Tom Parker - parkert@ihug.co.nz
> - http://www.geocities.com/MotorCity/Track/8381/
Dave Massey
St. Louis, MO USA
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