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Old 12-04-2017, 08:05 PM   #110
Ultramaroon
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With respect to clutch pedal free play at the top, the main point to consider is how the self-adjusting mechanism works.

The piston in the master cylinder must be allowed to fully extend. At the end of its travel it opens a port to allow fluid exchange between the reservoir and the rest of the system.

It works just like a brake master cylinder except in reverse. As the clutch wears, the TOB is pushed further away from the pressure plate. The fluid flows back into the reservoir.

This adjustment can be tested simply by pulling the clutch fork forward by hand. If it gives, then that port is open. The clutch pedal will have to be pumped a couple times to extend the pushrod out of the slave cylinder. Either that or wait a few minutes for the piston to extend on its own.
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