yeah after the trans warms up the rear clutch piston and the discs under it
expand a little and seals properly. so most likely your piston seal and
clutches are worn, which is a good excuse to change all the seals and
clutches. best to do that now before it gets worse. if the entire clutch
sticks, you might not have reverse anymore......well you will have it but
the trans wont want to engage in it as the rear clutch will be stuck.
"Julian" <jps@[EMAIL PROTECTED]
> wrote in message
news:SUuLi.36485$ka7.26397@[EMAIL PROTECTED]
>
> The gearbox is an A727 behind a 440 motor in a 1973 Jensen Interceptor.
>
> My box has developed an annoying problem. When the box is cold I can't
get
> any forward gears although reverse works perfectly. If I hold it on the
> brakes and give it a few revs in reverse for a minute to warm the oil up
> it suddenly starts working normally, whereupon it then works perfectly
for
> the rest of the day.
>
> The fluid is new, (and clean) the filter is new and the oil level is OK.
> When the gearbox is working normally it behaves perfectly without a hint
> of any problem.
>
> I've studied the schematic and 'elements in use table' in the Chrysler
> workshop manual and have decided that the problem must be connected with
> the rear clutch, probably sticking. I can't see any problems with the
> valve block, because in drive and stationary, oil is ****ted straight
> through the manual valve (which can't stick because it connected to the
> selector lever) through to the rear clutch. Oil pressure must be fine
> because it drops into reverse perfectly.
>
> Would anyone care to comment on my diagnosis, is there anything that can
> be done without removing the box and has anyone rebuilt the gearbox
> themselves?
>
> Thanks Julian.
>
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