GM Celebrity/Century/Ciera/6000 1982-1996 Repair Guide

Brake Pads

Print


CAUTION
Brake shoes may 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 Figures 1, 2, 3, 4 and 5

  1. Siphon 2 / 3 of the brake fluid out of the master cylinder reservoir.
  2.  
  3. Release the parking brake, then raise and safely support the vehicle.
  4.  
  5. Remove the tire and wheel assembly.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the rear brake pad components

  1. Install two wheel nuts to secure the rotor in place.
  2.  


CAUTION
Be prepared to catch the springs when you are removing the spring pins. The springs may fly out and can cause personal injury

  1. Remove the spring pins using removal tool J 6125-1B and J 36620. The tool will thread into the spring pin. Using the tool remove the spring pins from the caliper.
  2.  



Click image to see an enlarged view

Fig. Fig. 2: The spring pins are removed using this special tool

  1. Remove the outboard brake pad from the caliper. Loosen the parking brake cable adjustment if necessary to remove the pad.
  2.  
  3. Remove the inboard pad from the caliper. It may be necessary to slide the caliper in slightly to remove the pad.
  4.  



Click image to see an enlarged view

Fig. Fig. 3: Remove the inboard pad from the caliper. It may be necessary to push on the bridge, moving the caliper inboard to allow clearance for removing the pad

  1. Remove the two check valves from the end of the piston assembly, using a small flat bladed tool.
  2.  
  3. Bottom the piston in the caliper bore using a caliper spin back tool or tool J-36621. Turn the left caliper piston assembly counterclockwise and the right piston assembly clockwise. This is done to move the piston assembly back into the bore. Make sure the two notches in the caliper piston are at the 6 and 12 o'clock positions.
  4.  



Click image to see an enlarged view

Fig. Fig. 4: Bottom the piston in the caliper bore using a caliper spin back tool

To install:
  1. Install a new lubricated two way check valve into the piston assembly.
  2.  
  3. Install the inboard pad so the dowels on the back of the pad seat into the piston notches.
  4.  
  5. Install the outboard pad.
  6.  



Click image to see an enlarged view

Fig. Fig. 5: Using a hammer and soft brass drift, install the spring pins

  1. Install the pad spring over the outboard pad with the spring center section over the top of the pad. Slide the second spring pin into the caliper until the pad spring can be hooked under it.
  2.  
  3. Install the pad spring over the inboard pad with the spring center section over the top of the pad. Slide the second spring pin into the caliper until the pad spring can be hooked under it.
  4.  
  5. With both pad springs in place, drive the spring pins to the fully seated position in the caliper.
  6.  
  7. Install the tire and wheel. Hand-tighten the lug nuts.
  8.  
  9. Lower the vehicle, then tighten the lug nuts to 100 ft. lbs. (136 Nm).
  10.  
  11. Pump the brake several times to seat the pads against the rotor. Top off the brake fluid.
  12.  

INSPECTION



The pad thickness should be inspected every time that the tires are removed for rotation. The outer pad can be checked by looking in at each end, which is the point at which the highest rate of wear occurs. The inner pad can be checked by looking down through the inspection hole in the top of the caliper. If the thickness of the pad is worn to within 0.030 in. (0.76mm) of the rivet at either end of the pad, all the pads should be replaced. This is the factory recommended measurement, your state's automobile inspection laws may not agree with this.

Always replace all pads on both wheels at the same time. Failure to do so will result in uneven braking action and premature wear.

 
label.common.footer.alt.autozoneLogo