[earthmover]

can anybody give me any more info on bleeding my clutch. the pedal dosent return properly and i have been told to bleed the clutch. i have tried the conventional method and also pressure bleeding and both result in no air coming out. i checked the plate wear and replaced the pressure plate, drive plate and the release bearing as they were on there last legs. still i have this problem of the pedal returning slowly. while i had it all apart i made sure that the release bearing slid on the primary imput shaft ok. bar changing either or both the slave and main cylinders i dont know whats left and everybody keeps saying it needs bleeding but have no further input. can anybody shed any light on this. its a 2002 460 fh 4/4

 

[dongstar]

hi there, the fault could be at the master cylinder at the pedal. if the pedal is 'spongy' at the top but resistance is felt half way down the pedal this is usally the fault. as the internal seals pass the fluid without a leak present.

hope this helps

 

[Alicia23]

There are two mechanisms that allow the reservoir to replenish the master cylinder, one is that the seal is a one way affair, that should allow fluid to pass as the master cylinder piston is released, secondly, there is a small hole that connects the reservoir to the front side of the seals when the piston is all the way back (i.e. the hole is closed off when the piston has moved a small distance.) Check that there is free play at the push rod when the pedal is released (to make sure that the piston isn't being held forward). If that's OK, it sounds like the piston is sticking. As the fluid is not passing the seal freely, it could be that the seal has swollen, and that might also stop the piston returning fully.