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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 120 (Disc Brake System) >> Repair Instructions >> Rear Brake Caliper Bracket Replacement (1500 Series) >> Installation Procedure

Installation Procedure

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    Fig 1: Brake Caliper Bracket Bolts
    GM1497142Courtesy of GENERAL MOTORS CORP.
  1. Install the brake caliper bracket.
  2. Perform the following procedure before installing the brake caliper bracket bolts.
    1. Remove all traces of the original adhesive patch.
    2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
    3. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488) to the threads of the bolt.
    3. NOTE: Refer to Fastener Notice .
  3. Install the brake caliper bracket bolts.

    Tighten:  Tighten the bolts to 165 N.m (122 lb ft).

    4. Fig 2: Brake Pads & Caliper Bracket
    GM1497141Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • If installing the original brake pads and retaining springs, position the brake pads and retaining springs in the original location.
    • DO NOT reuse the old brake pad retaining springs with new brake pads. Replace with NEW only.
  4. Install the retaining springs to the brake caliper bracket.
  5. Install the brake pads.
    6. Fig 3: Caliper & Caliper Bracket
    GM1497139Courtesy of GENERAL MOTORS CORP.
  6. Install the caliper to the caliper bracket.
    7. Fig 4: Brake Caliper Bolts
    GM1497138Courtesy of GENERAL MOTORS CORP.
  7. Install the brake caliper guide pin bolts.
    8. Fig 5: Using Open End Wrench To Loosen Brake Caliper Guide Pin Bolt
    GM1697372Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • 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 brake caliper while removing or installing the caliper guide pin bolt. DO NOT allow the open end wrench to come in contact with the brake caliper. Allowing the open end wrench to come in contact with the brake caliper will cause a pulsation when the brake is applied.
  8. Use an open end wrench to hold the guide pins while tightening the guide pin bolts.

    Tighten:  Tighten the bolts to 38 N.m (28 lb ft).

  9. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  10. Lower the vehicle. Refer to Lifting and Jacking the Vehicle .
  11. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
  12. Slowly release the brake pedal.
  13. Wait 15 seconds, then repeat steps 11-12 until a firm pedal is obtained to properly seat the caliper pistons and pads.
  14. Fill the master cylinder reservoir to the proper level with clean brake fluid, if necessary. Refer to Master Cylinder Reservoir Filling .
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