Thread: Clutch Adjustment

G'day everyone

I've been trying to adjust Arthur's clutch 'by the book' after having installed a new slave cylinder.

The clutch works seems to work ok, but doesn't feel like like many other clutches. Unfortunately Arthur is the only IIA Ive driven so don't know if it it's adjusted right or not.

The pedal height is set right and there there is 1/16" freeplay at the master cyclinder as required.

But I can't get the 'C' adjust as shown in the diagram below. It seems my 'C' measurement is about 1/2" less than the 2-7/8" as described. No matter which way I turn push rod the distance seems the same, just the piston moves back up into the cylinder.

Are there any special magic tricks to adjusting the clutch? How should the clutch feel (if it can even be described)?

I think it likely you are not exactly following the instructions. As the piston moves up into the cylinder, the distance C must change.

What I suggest is that you use method B. (This all assumes you have the later type of slave cylinder, which most have - see how to tell in the book)

What this adjustment does, is ensures that the slave cylinder does not run out of movement, and if the clutch is fully disengaging then the adjustment is somewhere near right. Misadjustment will not change the feel of the clutch, just limit movement.

What will change the feel of the clutch is if one of the two pins that carry the movement from the bell crank on the slave cylinder to the clutch for shaft is partly failed or is bent. These pins are hardened, and if replaced with mild steel do not last long. The only other thing that will change the feel is a problem with air, the master cylinder or a sticking pedal shaft. The pedal should travel about an inch or so before you feel the load, and when lifting your foot, the clutch should start to engage at least an inch off the floor.

Hope this helps.

John