GM Corvette 1984-1996 Repair Guide

Slave Cylinder

Print

REMOVAL & INSTALLATION



1984-88 Vehicles

See Figure 1

  1. Disconnect the negative battery cable.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Disconnect and plug the hydraulic lines from the slave cylinder.
  6.  
  7. Unfasten the slave cylinder-to-clutch housing mounting bolts.
  8.  
  9. Remove the pushrod and slave cylinder from the vehicle.
  10.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the clutch slave cylinder and related components-1984-88 vehicles

To install:
  1. Unplug and connect the fluid line to the slave cylinder.
  2.  
  3. Bleed the clutch hydraulic system, as outlined later in this section.
  4.  
  5. Lubricate the end of the slave cylinder with a suitable rubber lubricant.
  6.  
  7. Position the slave cylinder to the clutch housing and secure with the mounting bolts. Tighten the bolts to 25-40 ft. lbs. (34-54 Nm).
  8.  
  9. Carefully lower the vehicle.
  10.  

1989-96 Vehicles

See Figure 2

On later model vehicles, the slave cylinder is referred to as the actuator cylinder.

  1. Disconnect the negative battery cable.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Unfasten the clutch actuator cylinder retaining nuts.
  6.  
  7. Note the position of the hydraulic line, then detach the line from the retaining clip.
  8.  
  9. Remove the pushrod and clutch actuator cylinder from the clutch housing.
  10.  


WARNING
Do not let the clutch actuator cylinder to hang by its fluid hose.

  1. Disconnect and plug the fluid line fitting from the actuator cylinder.
  2.  

To install:


Click image to see an enlarged view

Fig. Fig. 2: Exploded view of the clutch actuator (slave) cylinder-1989-96 vehicles

  1. Unplug and connect the fluid line to the actuator cylinder. Tighten the line fitting to 13 ft. lbs. (18 Nm).
  2.  
  3. Instlal the pushrod and clutch actuator cylinder. Secure with the mounting bolts and tighten to 18 ft. lbs. (25 Nm).
  4.  
  5. Place the hydraulic line into the retaining clip.
  6.  
  7. Carefully lower the vehicle, then bleed the clutch hydraulic system, as outlined later in this section.
  8.  

HYDRAULIC SYSTEM BLEEDING



The bleeding procedure must be performed whenever any component of the hydraulic clutch system is disconnected, or the level of fluid has been allowed to fall low enough or air to be drawn into the master cylinder.

This procedure will require the use of an assistant.

1984-88 Vehicles
  1. Fill the master cylinder reservoir with the DOT 3 or equivalent fluid from a fresh, sealed container.
  2.  


WARNING
NEVER fill the master cylinder with fluid that has already been bled from a system, as it may be aerated, contain too much moisture, or be contaminated.

  1. Raise and safely support the vehicle.
  2.  
  3. Unfasten the slave cylinder attaching bolts.
  4.  
  5. Hold the slave cylinder at a 45° angle with the bleeder at the highest point. Have an assistant fully depress the clutch pedal, then open the bleeder.
  6.  
  7. Close the bleeder valve and release the clutch pedal.
  8.  
  9. Repeat Steps 4 and 5 until all air is evacuated from the system. Check and refill the master cylinder as necessary to prevent air from drawn through the master cylinder.
  10.  

1989-90 Vehicles
  1. Raise and support vehicle.
  2.  
  3. Remove the slave/actuator cylinder attaching stud nuts.
  4.  
  5. Remove the pushrod and slave/actuator cylinder from the clutch housing and the hydraulic line from the retaining clip.
  6.  
  7. Disconnect the hydraulic hose fitting from the slave/actuator cylinder.
  8.  
  9. Remove the bleed screw dust cap.
  10.  
  11. Remove the factory bleed screw from the slave/actuator cylinder using a fluted screw extractor. Install a new bleed screw.
  12.  
  13. Connect hydraulic hose fitting to the actuator, then install the clutch slave/actuator cylinder and nuts.
  14.  
  15. Install the hydraulic line into the retaining clip. Torque stud nuts to 19 ft. lbs. (25 Nm).
  16.  
  17. Lower vehicle.
  18.  
  19. Remove the ECM from the mounting bracket to gain access to the clutch master cylinder for filling.
  20.  
  21. Fill the master cylinder reservoir with the proper grade and type brake fluid.
  22.  
  23. To remove some of the air from the system prior to bleeding, proceed as follows:
    1. Remove master cylinder cap and moisture barrier. Reinstall the cap.
    2.  
    3. Lightly stroke the clutch pedal to release the air in the system through the master cylinder.
    4.  
    5. Remove the master cylinder cap and reinstall moisture barrier.
    6.  
    7. Reinstall the cap.
    8.  

  24.  
  25. Raise and support vehicle.
  26.  
  27. Fully depress the clutch pedal and open the bleeder screw. Close the bleed screw and release the clutch pedal.
  28.  
  29. Repeat Step 13 until all the air is expelled from the system.
  30.  
  31. Check the fluid reservoir and replenish, as required.
  32.  
  33. Tighten the bleeder screw until the screw breaks, requires for body clearance. Screw should break at approximately 10-14 ft. lbs. (14-19 Nm).
  34.  
  35. Install dust cap on the bleeder screw.
  36.  
  37. Lower the vehicle and install the ECM.
  38.  

199196 Models

  1. Disconnect the negative battery cable and remove the ECM from the mounting bracket to access the master cylinder for filling. Fill the master cylinder reservoir with the proper grade and type of fresh brake fluid or hydraulic clutch fluid.
  2.  
  3. Prior to bleeding the actuator, most of the air can be removed as follows:
    1. Remove the master cylinder cap and moisture barrier.
    2.  
    3. Install the master cylinder cover.
    4.  
    5. Lightly stroke the clutch pedal to release trapped air through the master cylinder.
    6.  
    7. Remove the master cylinder cap and install the moisture barrier.
    8.  
    9. Install the master cylinder cap.
    10.  

  4.  
  5. Raise and support the vehicle safely.
  6.  
  7. Remove the actuator cylinder attaching stud nuts.
  8.  
  9. Remove the pushrod and actuator cylinder from the clutch housing and the hydraulic line from the retaining clip.
  10.  
  11. Lower cylinder slightly for access and disconnect the hydraulic hose fitting from the actuator cylinder.
  12.  
  13. Remove the bleed screw dust cap.
  14.  
  15. Position a drain pan or attach a clear plastic hose.
  16.  
  17. Support the slave cylinder in a horizontal position, with the bleeder screw vertical.
  18.  
  19. Fully depress the clutch pedal and open the bleeder screw.
  20.  
  21. Close the bleed screw and release the clutch pedal.
  22.  
  23. Repeat Steps 11 and 12 until all the air is expelled from the system. Check the fluid reservoir and replenish, as required during the procedure. Be sure the reservoir is kept sufficiently full to prevent air from being drawn into the system.
  24.  
  25. Tighten the bleeder screw and install the dust cover.
  26.  
  27. Install the hydraulic line into the retaining clip, position the actuator cylinder and tighten the stud nuts to 19 ft. lbs. (25 Nm).
  28.  
  29. Lower the vehicle.
  30.  
  31. Install the ECM and connect the negative battery cable.
  32.  

 
label.common.footer.alt.autozoneLogo