On Sun, 18 Jul 1999, Alan FitzPatrick wrote:
> My name is Alan FitzPatrick and I have just rejoined the list after a years
> sabbatical.
> (Actually just started working on the car again.)
Why does this sound like a meeting for people addicted to something? Hmm,
never mind, don't answer that.
"Way to go, Alan! We're here to help you."
> I have a 1969 TR6 project that I have owned for 9 years, that I have just
> replaced the clutch in. While I was at it I rebuilt the Master Cylinder and
> the Slave Cylinder. Now, the problem is that when I bring my foot up off the
> floor it grabs right there. I have checked the two manuals that I have and
> they are not giving me any clue of what to do next. Can anyone give me some
> insight, please!
You should raise the car up and support it securely, so that someone can
sit in the drivers' seat while someone else (probably you) can be under
the car...
The slave cylinder should have a throw of 5/8" or so. To test this, crawl
under the car, put a tape measure or ruler beside the slave cylinder (make
sure it's easy to read), and have someone depress the clutch pedal all the
way.
If it doesn't move 5/8", then there's a problem somewhere. Have your
comely assistant pump the pedal once or twice and measure again. If,
after pumping the pedal, you get 5/8" of throw, then you have air in the
clutch line and will need to flush it.
If you get less than 5/8" regardless of pedal pumping, examine the flex
hose for cracks, kinks, or leakage. If it looks old, replace it anyway,
as it may have internal damage.
If you get 5/8" throw on the first pedal push, ensure that the clutch
slave cylinder is engaged into the middle hole of the clutch actuator rod.
There are 3 holes because the transmission also went into other cars
(Vitesse estate? others?) which had different hydraulic systems, and
different amounts of 'throw' for the clutch slave cylinder. You may want
to try a different hole to see what happens anyway.
Another test: have the assistant push and hold the pedal, and watch the
slave pushrod. If it creeps back into the bore of the slave cylinder,
then you have internal leakage at the master cylinder (rubber thrust
washer failed)
good luck,
-Malcolm
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