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

Brake Pads

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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



Light Duty

See Figures 1, 2, 3 and 4

  1. Siphon 2 / 3 of the brake fluid out of the master cylinder reservoir.
  2.  
  3. To remove the wheels, loosen all the lug nuts at least one full turn, before raising the car.
  4.  
  5. Raise and safely support the vehicle.
  6.  
  7. Remove the tire and wheel assembly.
  8.  
  9. Install two wheel nuts to secure the rotor in place.
  10.  
  11. Unstake the outboard pads using a hammer and chisel.
  12.  
  13. Remove the caliper mounting bolts.
  14.  
  15. Remove the caliper from the steering knuckle and support on a wire. DO NOT disconnect the brake hose or allow the brake hose to support the weight of the caliper.
  16.  
  17. Remove the outboard pad from the caliper.
  18.  
  19. Pull the top of the inboard pad out from the caliper to disengage the spring clip securing the inboard pad and remove the pad.
  20.  



Click image to see an enlarged view

Fig. Fig. 1: Brake pad components used on the light duty brake system

  1. Using a suitable C-clamp compress the caliper piston fully into the caliper bore.
  2.  

To Install:
  1. Install a new spring clip on the back of the inboard pad. Make sure that the top tab in engaged in the pad before hooking the lower end.
  2.  



Click image to see an enlarged view

Fig. Fig. 2: A new spring clip should be used

  1. Install the inboard pad with a new spring clip into the caliper piston. This can be done by locking the bottom edge of the spring clip into the piston and pushing the top of the pad back.
  2.  



Click image to see an enlarged view

Fig. Fig. 3: Make sure that the top tab in engaged in the pad before hooking the lower end

  1. Install the outboard pad into the caliper.
  2.  
  3. Install the caliper on the steering knuckle and tighten the mounting bolts to 28 ft. lbs. (38 Nm) for 1982-84 models and 38 ft. lbs. (51 Nm) for 1985-96 models.
  4.  
  5. Pump up the brake pedal until the pads seat against the rotor. Using a suitable tool, secure the brake pedal in the down position keeping the front wheels locked.
  6.  
  7. Stake the pad ears down until they are flat against the caliper. The pad ears must secure the pad firmly in place.
  8.  



Click image to see an enlarged view

Fig. Fig. 4: Stake the pad ears down until they are flat against the caliper. The pad ears must hold the pad firmly in place

  1. Remove the two wheel nuts.
  2.  
  3. Install the tire and wheel assembly and tighten the lug nuts by hand.
  4.  
  5. Lower the vehicle. Then tighten the lug nuts to 100 ft. lbs. (136 Nm).
  6.  
  7. Check and top off the master cylinder.
  8.  

Heavy Duty

See Figures 5, 6, 7, 8 and 9

  1. Siphon 2 / 3 of the brake fluid out of the master cylinder reservoir.
  2.  



Click image to see an enlarged view

Fig. Fig. 5: Siphon 2/3 of the brake fluid out of the master cylinder reservoir

  1. To remove the wheel, loosen all the lug nuts at least one full turn, before raising the car.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Remove the tire and wheel assembly.
  6.  
  7. Install two wheel nuts to secure the rotor in place.
  8.  
  9. Remove the caliper mounting bolts.
  10.  



Click image to see an enlarged view

Fig. Fig. 6: A special socket is used to remove the caliper mounting bolts

  1. Remove the caliper from the steering knuckle and support on a wire. DO NOT disconnect the brake hose from the caliper or allow the caliper to hang by the brake hose unsupported.
  2.  



Click image to see an enlarged view

Fig. Fig. 7: Do not allow the caliper to hang freely by the brake hose. Support the caliper with a length of wire

  1. Pull the top of the inboard pad out from the caliper to disengage the spring clip securing the inboard pad. Remove the pad.
  2.  



Click image to see an enlarged view

Fig. Fig. 8: Pull the top of the inboard pad out from the caliper to disengage the spring clip securing the inboard pad

  1. Remove the outboard pad by pushing the pad inward to unseat the pad from the caliper. Once the pad alignment dowels are clear of the caliper body push the pad out of the caliper.
  2.  



Click image to see an enlarged view

Fig. Fig. 9: Now remove the outboard pad from the caliper

  1. Using a suitable C-clamp compress the caliper piston fully into the caliper bore.
  2.  

To install:
  1. Install the inboard pad with a new spring clip into the caliper piston. This can be done by locking the bottom edge of the spring clip into the piston and push the top of the pad back.
  2.  
  3. Install the outboard pad into the caliper making sure the dowels in the brake pad seat in the holes in the caliper.
  4.  
  5. Install the caliper on the steering knuckle and tighten the mounting bolts to 28 ft. lbs. (38 Nm) for 1982-84 models and 38 ft. lbs. (51 Nm) for 1985-96 models.
  6.  
  7. Remove the two wheel nuts.
  8.  
  9. Install the tire and wheel assembly and tighten the lug nuts by hand.
  10.  
  11. Lower the vehicle. Tighten the lug nuts to 100 ft. lbs. (136 Nm).
  12.  
  13. Pump the brake pedal several times to seat the pads against the rotor.
  14.  
  15. Check and top off the master cylinder.
  16.  

INSPECTION



See Figure 10

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.



Click image to see an enlarged view

Fig. Fig. 10: The pad thickness should be inspected every time that the tires are removed for rotation

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

 
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