GM Cadillac 1967-1989 Repair Guide

Disc Brake Caliper

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CAUTION
Brake shoes contain asbestos, which has been determined to be a cancer causing agent. Never clean the brake surfaces with compressed air! Avoid inhaling any dust from any brake surface! When cleaning brake surfaces, use a commercially available brake cleaning fluid.

REMOVAL & INSTALLATION



See Figure 1

  1. Siphon off 2 / 3 of the brake fluid from the master cylinder.
  2.  

The insertion of the thicker replacement pads will push the caliper piston back into its bore and will cause a full master cylinder to overflow.

  1. Raise the rear of the vehicle and support it with safety stands. Remove the wheel and tire assembly.
  2.  
  3. Reinstall two lug nuts to keep the rotor from turning.
  4.  
  5. Remove the retaining clip from the parking brake actuator lever.
  6.  
  7. Disconnect the parking brake cable and spring from the lever.
  8.  
  9. While holding the parking brake lever in place, remove the lock nut. Remove the lever, lever seal and the anti-friction washer.
  10.  
  11. If the caliper is to be overhauled or replaced, remove the bolt attaching the brake line inlet fitting.
  12.  
  13. Remove the caliper mounting bolts and then remove the caliper from the rotor and mounting bracket.
  14.  
  15. Check the lever seal and the anti-friction washer for wear and replace if worn.
  16.  
  17. Check the mounting bolts for any wear or damage, replace if necessary. Check the bolt boots, support bushings and caliper piston boot for any wear, cracking or other damage, replace as necessary.
  18.  
  19. Replace the insulators.
  20.  

To install:
  1. Coat the entire shaft of the caliper mounting bolts with a thin film of silicone grease.
  2.  
  3. Slide the caliper over the rotor and into the mounting bracket. Make sure that the new insulators are in position. Tighten the mounting bolts to 63 ft. lbs. (85 Nm).
  4.  
  5. If you disconnected the inlet fitting, install it and tighten to 32 ft. lbs. (44 Nm). Use two NEW copper washers.
  6.  
  7. Lubricate the parking brake lever seal with silicone grease and then install it and the anti-friction washer.
  8.  
  9. Install the lever onto the actuator screw hex properly. Tighten the nut to 35 ft. lbs. (48 Nm) while holding the lever in position and then rotate the lever back against the stop on the caliper.
  10.  
  11. Install the spring with the damper and then connect the parking brake cable.
  12.  
  13. Install the retaining clip onto the lever so that it prevents the parking brake cable from sliding out of the slot in the lever.
  14.  
  15. Adjust the parking brake cable by tightening the cable at the adjuster until the lever begins to move off the stop on the caliper. Loosen the adjustment just enough so that the lever moves back against the stop. Apply and release the parking brake three times to verify proper adjustment.
  16.  
  17. Remove the two lug nuts and then replace the wheels. Lower the vehicle.
  18.  
  19. Bleed the brake system and recheck the fluid level.
  20.  



Click image to see an enlarged view

Fig. Fig. 1: Rear disc brake caliper mounting bolts - 1986-89 Eldorado and Seville

 
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