How to fix clutch pedal sticking, weakness, etc - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

/etc/shadow · 10-04-2002, 07:52 PM

This is how it was done in my S13, I'm sure the S14 is the same.

Symptoms:

Clutch pedal sticks on its way up.
Clutch pedal has no pressure.
Very unclean shifting.
You have to pump the clutch to get the shifting any cleaner (say the stick is siezed).

Solution:

Part #22404 from Autozone. It's a slave cylinder rebuild kit. It comes with 2 seals - one dust boot, and one piston cup.
Also, pick up a container of DOT 4 brake fluid.

Steps:

1: Jack up the passenger front side of the car.
2. Grab an oil pan and slide it under where the slave cylinder is (on the right side of the bellhousing). It will have a hose going to it and a metal bar going out that presses against a sort of fitting on the bellhousing.
3. Notice the two bolts holding the slave cylinder to the bellhousing. Remove these. IIRC, it was a 13mm socket.
4. Now that it's removed, you should be able to pull the dust boot off, which should be wrapped around the piston arm. The piston and piston spring will probably fall out of the cylinder, followed by lots of brake fluid, so have the oil pan ready.
5. Get out from underneath the car, carrying all the internals of the slave cylinder.
6. Pull the old boot off the piston arm and put the new one on.
7. Pull the old ring off the piston --- NOTE THE DIRECTION IT IS ON THERE --- and put the new one on.
8. Spring back on the piston, Slide the piston back into the slave cylinder bore.
9. Place the boot and piston arm back on the slave cylinder.
10. Bolt the slave back up. You may have to use some muscle to move the release fork to get the bolts to line up.
11. Open up the hood and add the DOT 4 to the master clutch cylinder reservoir. Add it slowly, and push the clutch pedal down, then pull it up, to let the fluid into the sytem. Continue doing this until the system is full.
13. Bleed the system as you would a brake system.
14. Take it off the jackstand and put that up.
15. Don't be a dumbass and get all giddy and excited and reverse out of your garage with the oil pan underneath the car.
16. Success! The clutch pedal should require no pumping. Shifting should be clean. The clutch pedal should have pressure and spring up properly each time.

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10-04-2002, 07:52 PM	#1
/etc/shadow Zilvia Member Join Date: Jun 2002 Posts: 167 Trader Rating: (0) Feedback Score: 0 reviews	This is how it was done in my S13, I'm sure the S14 is the same. Symptoms: Clutch pedal sticks on its way up. Clutch pedal has no pressure. Very unclean shifting. You have to pump the clutch to get the shifting any cleaner (say the stick is siezed). Solution: Part #22404 from Autozone. It's a slave cylinder rebuild kit. It comes with 2 seals - one dust boot, and one piston cup. Also, pick up a container of DOT 4 brake fluid. Steps: 1: Jack up the passenger front side of the car. 2. Grab an oil pan and slide it under where the slave cylinder is (on the right side of the bellhousing). It will have a hose going to it and a metal bar going out that presses against a sort of fitting on the bellhousing. 3. Notice the two bolts holding the slave cylinder to the bellhousing. Remove these. IIRC, it was a 13mm socket. 4. Now that it's removed, you should be able to pull the dust boot off, which should be wrapped around the piston arm. The piston and piston spring will probably fall out of the cylinder, followed by lots of brake fluid, so have the oil pan ready. 5. Get out from underneath the car, carrying all the internals of the slave cylinder. 6. Pull the old boot off the piston arm and put the new one on. 7. Pull the old ring off the piston --- NOTE THE DIRECTION IT IS ON THERE --- and put the new one on. 8. Spring back on the piston, Slide the piston back into the slave cylinder bore. 9. Place the boot and piston arm back on the slave cylinder. 10. Bolt the slave back up. You may have to use some muscle to move the release fork to get the bolts to line up. 11. Open up the hood and add the DOT 4 to the master clutch cylinder reservoir. Add it slowly, and push the clutch pedal down, then pull it up, to let the fluid into the sytem. Continue doing this until the system is full. 13. Bleed the system as you would a brake system. 14. Take it off the jackstand and put that up. 15. Don't be a dumbass and get all giddy and excited and reverse out of your garage with the oil pan underneath the car. 16. Success! The clutch pedal should require no pumping. Shifting should be clean. The clutch pedal should have pressure and spring up properly each time.