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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 481 (Disc Brake System) >> Repair Instructions >> Front Disc Brake Pads Replacement (1500 Series) >> Installation Procedure

Installation Procedure

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    Fig 1: View Of Lower Brake Caliper Guide Pin Bolt
    GM1700050Courtesy of GENERAL MOTORS COMPANY
  1. Apply a very thin coating of high temperature silicone brake lubricant to the pad mating surfaces of the caliper bracket only.
  2. Install the spring clips (4) to the mounting bracket.
    • Install the NEW spring clips if replacing the brake pads.
    • Install the original spring clips in their original position if installing the original brake pads.
  3. If installing new brake pads, remove the adhesive backing paper from the brake pad insulators.
    4. NOTE:

    If installing the original brake pads, position the brake pads as marked during the removal procedure.

  4. Install the brake pads (3).
  5. Rotate the brake caliper (2) into the proper position on the mounting bracket (5).
    6. Fig 2: Using Open End Wrench To Loosen Brake Caliper Guide Pin Bolt
    GM1697372Courtesy of GENERAL MOTORS COMPANY
    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 pin 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.
  6. Use an open end wrench to hold the caliper guide pin while tightening the brake caliper guide pin bolt to 100 N.m (74 lb ft).
  7. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  8. Lower the vehicle.
  9. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
  10. Slowly release the brake pedal.
  11. Wait 15 seconds, then repeat steps 9-10 until a firm pedal is obtained to properly seat the brake caliper pistons and pads.
  12. Fill the brake master cylinder reservoir to the proper level with clean brake fluid, if necessary. Refer to Master Cylinder Reservoir Filling .
  13. 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.
  14. Burnish the brake pads and rotors. Refer to Brake Pad and Rotor Burnishing .
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