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Installation Procedure

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    NOTE:

    Whenever the brake rotor has been separated from the hub/axle flange, any rust or contaminants should be cleaned from the hub/axle flange and the brake rotor mating surfaces. Failure to do this may result in excessive assembled lateral runout (LRO) of the brake rotor, which could lead to brake pulsation.

  1. Use the J-42450-A  Wheel Hub Resurfacing Kit to clean all rust and contaminants from the mating surface of the hub flange.
  2. Inspect the mating surfaces of the hub/axle flange and the rotor to ensure that there are no foreign particles or debris remaining.
    3. Fig 1: Front Brake Rotor And Hub
    GM370132Courtesy of GENERAL MOTORS CORP.
    NOTE:

    If the rotor was removed using the jack screw method you must ensure that the hub flange is free of nicks or marks caused by this procedure. Remove all raised nicks or marks before installing the rotor.

  3. Align the rotor to its original position on the hub, if applicable, and install the rotor.
    4. Fig 2: Brake Caliper & Bracket - Rear (Except Dual Wheels or NYS)
    GM924321Courtesy of GENERAL MOTORS CORP.
  4. Install the brake caliper and bracket assembly.
  5. Perform the following procedure before installing the caliper bracket mounting bolts.
    1. Remove all traces of the original adhesive patch.
    2. Clean the threads of the bolts with brake parts cleaner or equivalent and allow to dry.
    3. Apply Threadlocker GM P/N 12345493 (Canadian P/N 10953488) to the threads of the bolts.
    6. CAUTION:

    Refer to Fastener Caution .

  6. Install the brake caliper bracket mounting bolts and tighten to 300 N.m (221 lb ft).
  7. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  8. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
  9. Slowly release the brake pedal.
  10. Wait 15 seconds, then repeat steps 8-9 until a firm pedal is obtained to properly seat the brake caliper pistons and the brake pads.
  11. Fill the master cylinder reservoir to the proper level with clean brake fluid. Refer to Master Cylinder Reservoir Filling .
  12. If the brake rotor was refinished or replaced, burnish the brake pads and rotors. Refer to Brake Pad and Rotor Burnishing 
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