GM Lumina/Grand Prix/Cutlass Supreme/Regal 1988-1996

Master Cylinder

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REMOVAL & INSTALLATION



See Figure 1

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Fig. Fig. 1: Clutch hydraulic system

The factory hydraulic system is serviced as a single assembly. Replacement hydraulic assemblies are pre-filled with fluid and do not require bleeding. Individual components of the system are not available separately. Check with an aftermarket parts supplier to see if individual components can be purchased separately.

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the sound insulator inside the vehicle and disconnect the master cylinder pushrod at the clutch pedal.
  4.  
  5. Remove the left upper secondary cowl panel.
  6.  
  7. Remove the two master cylinder reservoir-to-strut tower retaining nuts.
  8.  
  9. Remove the anti-rotation screw located next to the master cylinder flange at the pedal support plate.
  10.  
  11. Using wrench flats on the front end of the master cylinder body, twist the cylinder counterclockwise to release the twist lock attachment-to-plate. Do NOT tighten the hose connection on top of the cylinder body, damage may occur.
  12.  
  13. Remove the two actuator-to-transaxle retaining nuts and actuator assembly.
  14.  
  15. Pull the master cylinder with the pushrod attached forward out of the pedal plate. Lift the reservoir OFF the strut tower studs and remove the three components as a complete assembly.
  16.  

To install:
  1. Install the master cylinder into the opening in the pedal plate and rotate 45 degrees by applying torque on the wrench flats only.
  2.  
  3. Install the anti-rotation screw.
  4.  
  5. Install the fluid reservoir to the strut tower and tighten the retaining nuts to 36 inch lbs. (4 Nm).
  6.  
  7. Install a new pushrod bushing and lubricate before installation.
  8.  
  9. Install the master cylinder pushrod to the clutch pedal.
  10.  
  11. Install the clutch actuator to the transaxle.
  12.  
  13. Press the clutch pedal down several times to ensure proper operation.
  14.  
  15. Install the left upper secondary cowl panel, sound insulator and connect the negative battery cable.
  16.  

 
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