GM Firebird 1982-1992 Repair Guide

Slave Cylinder

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On vehicles equipped with a hydraulic clutch release mechanism, the slave cylinder is located on the left side of the bellhousing and controls the clutch release fork operation.

REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable.
  2.  
  3. Raise and safely support the front of the vehicle on jackstands.
  4.  
  5. Disconnect the hydraulic line from clutch master cylinder. Remove the line-to-chassis screw and the clip from the chassis.
  6.  

Be sure to plug the line opening to keep dirt and moisture out of the system.

  1. Remove the slave cylinder-to-bellhousing nuts.
  2.  
  3. Remove the push rod and the slave cylinder from the vehicle, then overhaul it (if necessary).
  4.  
  5. To install, reverse the removal procedures. Lubricate leading end of the slave cylinder with Girling® Rubber Lube or equivalent. Torque the slave cylinder-to-bellhousing nuts to 10-15 ft. lbs. (14-20 Nm). Fill the master cylinder with new brake fluid conforming to DOT 3 specifications. Bleed the hydraulic system.
  6.  

OVERHAUL



  1. Remove the shield, the pushrod and the dust cover from the slave cylinder, then inspect the cover for damage or deterioration.
  2.  
  3. Remove the snapring form the end of the cylinder bore.
  4.  
  5. Using a block of wood, tap the slave cylinder on it to eject the plunger, then remove the seal and the spring.
  6.  
  7. Using clean brake fluid, clean all of the parts.
  8.  
  9. Inspect the cylinder bore and the plunger for ridges, pitting and/or scratches, the dust cover for wear and cracking; replace the parts if any of the conditions exist.
  10.  

To assemble:
  1. Use new seals and lubricate all of the parts in clean brake fluid. Install the spring, the plunger seal and the plunger into the cylinder bore, then install anew snapring.
  2.  
  3. Lubricate the inside of the dust cover with Girling® Rubber Grease or equivalent, then install it into the slave cylinder.
  4.  

Be careful not to use any lubricant that will deteriorate rubber dust covers or seals.

BLEEDING THE HYDRAULIC CLUTCH



Bleeding air from the hydraulic clutch system is necessary whenever any part of the system has been disconnected or the fluid level (in the reservoir) has been allowed to fall so low that air has been drawn into the master cylinder.

  1. Fill master cylinder reservoir with new brake fluid conforming to DOT 3 specifications.
  2.  
  3. Raise and safely support the front of the vehicle on jackstands.
  4.  
  5. Remove the slave cylinder attaching bolts.
  6.  
  7. Hold slave cylinder at approximately 45 degrees with the bleeder at highest point. Fully depress clutch pedal and open the bleeder screw.
  8.  
  9. Close the bleeder screw and release clutch pedal.
  10.  
  11. Repeat the procedure until all of the air is evacuated from the system. Check and refill master cylinder reservoir as required to prevent air from being drawn through the master cylinder.
  12.  

Never release a depressed clutch pedal with the bleeder screw open or air will be drawn into the system.

 
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