R32 Slave Cylinder Failure..

[teteous]

Ok, so after buying my 32 gtst the clutch was for for about a month of very little driving.

Recently I lost pedal feel, it will only come halfway back up, and wont fully disengage when the pedal is at the floor.

It has a new master cylinder and I have replaced the slave 3 times now.. all end up leaking. The last one started leaking and scored the bore of the slave and metal shaving were coming out.

The dampener has also been removed previously.

It has a 5 Puk Ceramic button clutch.. I dont know if that has anything to do with the slaves dying (they last around 10 minutes of driving).

Any suggestions would be great..

Edited July 29, 2013 by teteous

[iruvyouskyrine]

Standard clutch line? May have a leak in the hose somewhere?

[teteous]

Standard clutch line? May have a leak in the hose somewhere?

Yeah, it has the metal line from the master down to the standard rubber line straight onto the slave.

There is no visible leaks on the line at all, bled both master and slave to where it will feel good, then just deteriorates the more you drive to the point where you are just slamming into gear (whilst rev matching).

The slaves end up pushing out black black grease, and when I remove the reservoir cap it seems to have a vacuum seal and bubbles will come up (even though it had been thoroughly bled, even with a vacuum bleeder).

Edited July 29, 2013 by teteous

[jiffo]

Check the obvious things, snapped throw out lever, broken pedal etc.

So many slave cylinders is just crazy.

[teteous]

Check the obvious things, snapped throw out lever, broken pedal etc.

So many slave cylinders is just crazy.

I checked the pedal when checking for master cylinder leaks on the inside of the firewall, no leaks there and the pedal seemed fine..

Any way of checking the throw out lever visually?

The pivot ball is not bent and looks fine.

[jiffo]

Remove the rubber dust boot and have a look in there with a torch.

The fact that the pedal is staying down suggests the throw out lever isn't returning fully.

The Skyline clutch pedal return spring goes over centre which actually helps the pedal to go down.

Without full return from the slave, throw-out lever etc the pedal won't come back up.

[jiffo]

Opps, just read all of your post #3 and there's a master cylinder problem.

If it keeps making air, needs an overhaul/replacement.

I never bother with kits for hydraulic items, either buy new or get them re-sleeved in stainless.