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Clutch cylinder rebuild?

To: spitfires@autox.team.net
Subject: Clutch cylinder rebuild?
From: "Dean Dashwood" <ddashwoo@ect.enron.com>
Date: Fri, 29 Oct 1999 09:40:08 +0100


Morning listers!

I have a clutch question which I'm hoping the expertise of the list will be able
to help me with.

Until recently, my clutch was engaging almost immediately as I started to let
the pedal up - classic signs that the clutch needs bleeding.  I left it for
quite a while, and just got used to it, until one day I got in the car, pushed
the clutch down, put it into reverse, and the car started moving - with the
clutch still fully down.

That weekend I bled the clutch, as I'd been meaning to do for ages.  A large
quantity of air bubbles came out, as I expected, but after I'd finished I took
it for a drive and it felt perfect!  I went back inside, feeling very pleased
with myself, and had a celebratory beer.

That was about 3 or 4 weeks ago, and it's been fine since - until yesterday.
Last night I got in the car, and found the clutch engaging almost immediately as
I let the pedal up.

One or two more clues here.  Before I bled the clutch, it was always bad first
thing in the morning, but once I'd driven about 1/2 mile it sorted itself out,
and was fine for the rest of the day, including the drive home after being left
outside work for 8 or 9 hours.  Also, one the few occassions when it was bad
enough that I could barely get the car into gear (which only happened once or
twice) pumping the clutch a few times (like 20-30) seemed to improve things
sufficiently to get me to work.

I don't believe that there was anything wrong with the bleeding of the clutch,
since it was fine for several weeks afterwards.  I'm currently thinking that the
most likely explaination is that air is getting into the system somehow.  Is
there any way to confirm this?  I'd have thought that the most likely problem
would be either the master or the slave cylinder, but which one?  Is a simple
cylinder rebuild going to fix this?  There is no evidence of any fluid leaks, by
the way (either fluid on the floor, or decreasing levels in the reservoir).

Any help appreciated, as always.....

Dean
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