SPF Slave Cylinder Help.

[Rick Parker]

Depending if you have a push or pull type slave and before you adjust the rod; push or pull the rod in the slave so the piston is able to compete full travel. If it is a pull type, be sure it is fully extended. If it is a push type be sure the piston is completely bottomed out in its bore, THEN adjust the rod, this will then allow full travel of the piston. Doing this will displace fluid from the slave into the master resevour so allow room for it. If this is not done the piston may not be moving far enough to effect full release of the clutch.

For the record how much free travel are you allowing at the clutch release lever and adjusting rod?

[jhv48]

Did that. I added a threaded rod to my slave (pusher) and pushed the plunger as far back as it would go. Then adjusted the threaded rod so there was 0 freeplay on the fork.

Clutch disengages just fine. Tranny grinds in reverse.

Maybe it's just me!

[maxum_101]

Originally Posted by Rick Parker

Depending if you have a push or pull type slave and before you adjust the rod; push or pull the rod in the slave so the piston is able to compete full travel. If it is a pull type, be sure it is fully extended. If it is a push type be sure the piston is completely bottomed out in its bore, THEN adjust the rod, this will then allow full travel of the piston. Doing this will displace fluid from the slave into the master resevour so allow room for it. If this is not done the piston may not be moving far enough to effect full release of the clutch.

For the record how much free travel are you allowing at the clutch release lever and adjusting rod?

ok i got a question when i remove my slave from the bracket and the fork my slave will keep pushing the rod out, not a little bit but for a good distance almost seems like the full travel of the cyl. is that normal? ive tried bleeding the slave many times and it still does the same thing i ask this cause my slave is alway pushing on the fork causing the t/o bearing to press on the pressure plate. dont know if i have a problem somewhere or if my slave is defective.

[jhv48]

Maxum, that's normal. There is an internal spring that pushes the rod all the way out all by itself. You can push it all the way back in with some effort.

Completely normal. It will exert constant pressure on the fork, but not enough to cause any engagement. Meant to be that way. Kind of self adjusting. I pulled out the rod and put in a threaded rod with lock nuts on either side of the fork. This way I control exactly when the fork starts moving.

Still grinds in reverse though!

[Silverback51]

I had problems with mine dragging, and to eliminate that, I had to adjust the rod so that I was preloading the throw out bearing. Neither condition was acceptable in my opinion.

I had a 1 inch diameter slave cylinder, so took some 1 inch diameter stainless material I had in the garage and bored a 7/8 inch diameter sleeve to fit in the existing slave cylinder to get more stroke. Just got it completed yesterday and it works like a charm. No drag and no preload on the throw out bearing.

It does have a little more pedal pressure, but not that bad. I can live with it.

And sorry, I did not take any pictures while I was doing it. I have a spare slave cylinder here and I'm probably going to make up a spare in the next month or two. I will get pictures of that one if anyone is interested.