Colin---The symptoms you describe sounds like you have air in the clutch
operating system. When this air gets hot, it expands and pushes some hydraulic
fluid back into the master cylinder. This air now compresses and doesn't give
the necessary motion to disenage the clutch. Bleed the system.
Ordinarily, when both clutch cylinders are in good shape, problem with
disengagement is from excess play in the pedal box. If you have to push the
pedal all the way to the floor to shift gears, even when things are relatively
cool, then take a look at removing the slop in this linkage. There's always a
chance of a broken fork pin, and worn/missing crank thrust washers, but your
pointing to the "hot condition" as the culprit makes bleeding out the air the
first step.
Dick
-----Original Message-----
From: Colin Thom
Sent: Monday, May 30, 2011 3:57 PM
To: 6pack@autox.team.net
Subject: [6pack] shifting hot
Hi gang,
The car's running like a top. But. After about an hour of city driving it
gets really hard to put it into first gear at a dead stop. This doesn't
happen at every red light, but most. Trying other gears first is almost as
bad and doesn't seem to make it any easier to get it into 1st. Once rolling,
shifting is fine. Gear oil level is fine, OD works fine. Clutch master and
slave (sleeved) are both new-ish from Apple Hydraulics..a few hundred miles
on them at most. Fluid is silicone, no discoloration or evidence of seal
degradation. As I said.only happens after a stretch of city driving.
Everything's fine when it's not hot. Any ideas? Thanks. Colin '75
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