Re: 5kt slush box shifting

[Michael Murphy <mmurphy@nais.com>]

Leif Pedersen wrote:
> 
> I was over at my mechanic yesterday, and he has a problem with a customer's
> car transmission.  It is a 1985 5kt with a slush box.  His customer had
> ordered a used replacement transmission himself, from one of the sources
> that has been mentioned here without too many glowing terms, and John only
> needed to install it.  Since this was only replacing the transmission, the
> differential was never removed from the car.  Now when the car is cold, it
> will not upshift.  Goes into first fine, and after a couple of blocks of
> driving it will shift and work just fine.  Until warmed up, it refuses to
> upshift.  Any good suggestions on causes?  

The 087 tranny in my 89 100 exhibited the above along with the diff's
"desire" to eat its way out of the case necessitating a total rebuild.

Provided fluids are at correct levels, possible causes are:
No upshift: 
dirty/damaged governor; stuck shift valve; dirty valve body; 1-2 valve
stuck; worn/burnt 2nd gear band; loose accumulator cover.
Delayed upshift:
dirty valve body; 2nd gear band out of adjustment, burnt or worn.

Most of the above causes result from poor/no prior maintenance of the
tranny and/or sitting around a yard for a long time.

> There is one area that he is concerned with, he neglected to measure
> (and adjust if needed) the shim  washer(s) for the transmission final
> drive end play adjustment. 
That should not cause the no/delayed shift, but should be done anyway.
IMHO, the customer was penny wise, dollar foolish when he didn't request
at least an inspection and reseal of the tranny prior to install.  Did
your guy recommend such action?  If he did, and the customer refused
it's caveat emptor.  If he didn't, well ....
HTH,
MJ Murphy