According to the information I have the Sierra has an automatically adjusting clutch pedal that takes any slack out of the clutch cable. Does this cause the thrust bearing to be under light load at all times and rotate with the engine or is there intended to be a small amount of slack in the cable so that the bearing only turns when the clutch is engaged?

I have a simple clutch pedal with adjustment in the cable outer, does the clutch fork need a small spring to keep it against the thrust bearing to replicate the standard install?


Thanks
Alex

You need a small amount of play before engaging.

Yes you do but in the cable. The release bearing is held in contact against the diaphragm fingers under light load. Otherwise you get a release bearing rattle that's really annoying. When I switched to a floor mounted pedal box I pondered this problem and came up with the solution of putting a compression spring between the outer of the cable and the pedal box outlet. This squashes solid in the first inch of pedal movement and then the release bearing moves but the bearing is always under light load.

Clutch tensioner

[Edited on 24/6/15 by Dusty]

Very helpful diagram, did you make the parts yourself or reuse from another application?