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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 337 (Disc Brake System) >> Repair Instructions >> Rear Disc Brake Pads Replacement (1500 Series) >> Installation Procedure

Installation Procedure

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    Fig 1: Brake Caliper And Components
    GM1699857Courtesy of GENERAL MOTORS CORP.
  1. Apply a very thin coating of high temperature silicone brake lubricant to the pad hardware mating surfaces of the caliper bracket only.
  2. Install the spring clips (4) on the caliper mounting bracket (5).
  3. If installing new brake pads, remove the adhesive backing paper from the disc brake pad insulators.
    4. NOTE:

    If installing the original brake pads, note the locations marked prior to removal.

  4. Install the brake pads (3).
  5. Remove the mechanics wire and rotate the brake caliper (2) into position on the mounting bracket (5).
  6. Install NEW caliper guide pin bolts.
    7. Fig 2: Using Open End Wrench On Brake Caliper Guide Pin Bolt
    GM1697372Courtesy of GENERAL MOTORS CORP.
    CAUTION:

    Refer to Fastener Caution .

    NOTE:
    • DO NOT use any air tools to remove or tighten the guide pin bolts. Use hand tools ONLY.
    • Install an open end wrench to hold the caliper guide pins in line with the caliper while removing or installing the caliper. DO NOT allow the wrench to come in contact with the brake caliper. Allowing the wrench to come in contact with the brake caliper will cause a pulsation when the brakes are applied.
  7. Use a open end wrench to hold the caliper guide pin while tightening the guide pin bolt to 38 N.m (28 lb ft).
  8. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  9. Lower the vehicle.
  10. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
  11. Slowly release the brake pedal.
  12. Wait 15 seconds, then repeat steps 10-11 until a firm pedal is obtained, to properly seat the brake caliper pistons and brake pads.
  13. Fill the brake master cylinder reservoir to the proper level with clean brake fluid. Refer to Master Cylinder Reservoir Filling .
  14. Firmly apply and maintain pressure on the brake pedal for 30 seconds to seat the brake pad insulators to the brake caliper pistons and caliper housing. Repeat this step 1 additional time.
  15. Burnish the brake pads and rotors. Refer to Brake Pad and Rotor Burnishing .
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