Hey guys. I am curious to know if you guys had to force your slave cylinder rod back in order to bolt it to the tranny? When I bolted the slave cylinder to my tranny it had alot of preload on the rod. I could push the rod in, but it would creep back out to full extension within about 4 seconds. The reason I ask is because I am getting some slippage now with some wear on the clutch and I think this "preload" is causing the problem. I would think it is like having slight pressure on the clutch pedal all the time... 8)

Quote from: TGPilotHey guys. I am curious to know if you guys had to force your slave cylinder rod back in order to bolt it to the tranny? When I bolted the slave cylinder to my tranny it had alot of preload on the rod. I could push the rod in, but it would creep back out to full extension within about 4 seconds. The reason I ask is because I am getting some slippage now with some wear on the clutch and I think this "preload" is causing the problem. I would think it is like having slight pressure on the clutch pedal all the time... 8)

Some slave cylinders actually have springs in them to keep the rod seated. Even ones without rods will have springs, I guess to help take up the slack in the pedal. The preload can be pretty signifigant on some, so this may or may not be your problem.

That is correct.  What is happening is when you push the slave cylinder rod in while installing, you are forcing all the fluid back to the master cylinder....resetting the position of the slave cylinder rod.  So when you push the pedal, you are moving the slave cylinder back out again.  There will be quite a bit of force when you are pushing the slave in to position, and as soon as you let go, it will come back out.  There is a spring in the slave that does that.

Hope that helped.

Jason

Sounds good to me. It just seemed like a lot of pressure. I can get a brand new system from Pontiac for $120. I may buy it and put it in just for my own mental benefit!!  :lol:

Quote from: eclipse5302That is correct.  What is happening is when you push the slave cylinder rod in while installing, you are forcing all the fluid back to the master cylinder....resetting the position of the slave cylinder rod.  So when you push the pedal, you are moving the slave cylinder back out again.  There will be quite a bit of force when you are pushing the slave in to position, and as soon as you let go, it will come back out.  There is a spring in the slave that does that.

Hope that helped.

Jason

that's how mine is.  when i install my slave cylinder to my tranny i just make sure the rod is seated in the right place, depress the two plastic retainer tabs so they will go in, and then push the slave towards the tranny until i can thread the two bolts on.  it sounds like your slave cylinder is operating normally to me.
joshua

I just got rid of my '88 Z24 because of problems with this setup...  (i could have fixed it, however the car rotted through)...

Either way, make sure you've got all the air out of it first, www.v8archie.com (Fiero site) has a good article on how to do this...