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Home >> GMC >> 2002 >> C3500 HD 8.1 G, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1688 (Disc Brakes (Except Cab & Chassis, & Hd)) >> Repair Instructions >> Front Brake Rotor Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra and 2002 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Whenever the brake rotor has been separated from the wheel bearing flange, clean any rust or foreign material from the mating surface of the rotor and flange with the J 42450 hub cleaning kit. Failure to do this may result in increased lateral runout of the rotor and brake pulsation
  1. Use the J 42450-A to clean all rust and contaminants from the mating surface of the hub flange
  2. Use the J 41013 to clean all rust and contaminants from the inside diameter of the hat section of the brake rotor to prevent any foreign material from getting between the brake rotor and the hub flange
    IMPORTANT: 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. Fig 1: View Of Front Brake Rotor And Hub
    GM370132
  3. Align the rotor to its original position on the hub (if applicable) and install the rotor
  4. Install the caliper and caliper bracket assembly
  5. Perform the following procedure before installing the brake caliper bracket mounting bolts
    1. 5.1. Remove all traces of the original adhesive patch
    2. 5.2. Clean the threads of the bolt with brake parts cleaner or the equivalent and allow to dry
    3. 5.3. Apply Threadlocker GM P/N 12345493 (Canadian P/N 10953488) to the threads of the bolt
    NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems
  6. Install the caliper bracket mounting bolts. Tighten
    • Tighten the brake caliper bracket mounting bolts to 175 N.m (121 lb ft) (15 Series).
    • Tighten the brake caliper bracket mounting bolts to 300 N.m (221 lb ft) (25 and 35 Series).
  7. Install the front wheel hub extension (dual wheel vehicles only).
    1. 7.1. Insert a drift or large screwdriver through the brake caliper into one of the brake rotor vanes in order to prevent the rotor from turning.
    2. Align and install the front wheel hub extension to the original position on the hub
      IMPORTANT: Follow the same tightening sequence for the front wheel hub extension that is used on an eight lug wheel. Refer to TIRE & WHEEL REMOVAL & INSTALLATION in Tires and Wheels
    3. Install the front wheel hub extension nuts. Tighten the front wheel hub extension nuts to 130 N.m (96 lb ft).
  8. Install the tire and wheel assembly
  9. Lower the vehicle
  10. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of it's travel distance.
  11. Slowly release the brake pedal
  12. Wait 15 seconds, then repeat steps 10-11 until a firm pedal is obtained. This will properly seat the brake caliper pistons and brake pads
  13. Fill the master cylinder reservoir to the proper level with clean brake fluid. Refer to MASTER CYLINDER RESERVOIR FILLING in Hydraulic Brakes
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