I'm trying to bleed the clutch slave cylinder and not having much luck! I have been using the standard brake bleeding technique of pumping the pedal, will this work with the clutch? What is the trick to this that I'm missing? I've made sure that the brake fluid is completely topped off as I know the clutch gets its fluid from the brake resevoir.

Thanks,
Mike

 

A vacuum pump has worked best for me. You are also supposed to completely compress the slave cylinder with a special tool (you can make this), but I have done it both ways. Using the manual brake bleed method is the last resort as it is hit or miss, but if you must, try disconnecting the slave cylinder and pointing the bleeder up like a syringe to get the air out.

 

With BMW's, I've always, connected the slave cyl nipple to the front left brake nipple, opened both, then stepped on the brake pedal. Never failed me. What would be different with the MCS?

 

Like a moth drawn to a flame, I just got through bleeding the clutch slave cyl. If you're not mechanically inclined, I suggest, in a word, DON'T! For me, traditional method of using a Mighty-Vac didn't work and I got air into the system. After taking out the 2 ea. 10mm bolts, had to fab a tool similar to the factory's which compresses the piston, then using a pressure bleeder, finally got all the air out after 3 sessions. At least I'm an expert(has-been under pressure) now.

 

I agree, don't mess with the slave cylinder. For some reason it's not as easy as it should be. I messed mine up and then it leaked. Fortunately my dealer replaced it under warrantee.