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Date: Sun, 09 Oct 2005 04:46:52 +0100
From: "Charles C." <c.k.christacopoulos_removeme_nospamee.ac.uk>
Subject: Re: 92 9kT sudden clutch failure
Charles wrote:
> I pushed in the clutch on my 92 9000 Turbo w/191k miles today and it
> went to the floor.
You mean no pressure on it? It should go to the floor anyway.
>
> I am not used to sudden catastrophic failure of a hydraulic clutch. The
> linkage seems fine, the plunger seems to be going into the master
> cylinder, but no clutch. There does not seem to be any evidence of leaks
> and the fluid in the TCS/ABS brake reservoir is full. It seems that is
> where the clutch fluid comes from?
>
> Any suggestions as to what went wrong?
If the problem is hydraulic then
- if it was the slave cylinder it should leak as the seal(s) would have
failed.
- if there is no leaking fluid it should be the master cylinder (I had
two fail on my 900s for brakes, they did so slowly not the way you
describe).
If master works slave is just a piston. If fluid goes in the cylinder
piston goes out and returns from the pressure of the clutch.
If it is mechanical then the pressure (thingie) of the clutch must have
collapsed. You would have heard some noises ... too unlikely.
>
> If it is in the slave cylinder we are looking at $1250 here.
It should be no different to the price for a clutch job (and if you have
to do the slave you should consider replacing the clutch too).
Sorry for your bad news.
Charles
PS. Read on in case it means anything to you what you got.
Newer 9k, around year 1996 onwards got a modified flexible pipe fitted
between firewall and g/box (GM part). The rubber pipe was reputed to
break down internally and release pieces of rubber which eventually
resulted in its collapse. They blocked the valves in the slave cylinder
and reputedly also damaged the seals.
When it happened to me my then dealer took me to the cleaners (bnospamds)
and I never got the failed parts back. There was also a story that the
slave itself collapsed.
Whatever caused the problem, a badly designed pipe or a Return to Main Index
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