GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2005 🢒 TopKick C-Series (Crew) C4/C5 🢒 Brakes 🢒 Air Drums 🢒 Rear Cam Brake Assembly Replacement

Removal Procedure
  1. Block the rear wheels.

    2. Object Number: 201768 Size: SH
  2. Cage the rear air brake chamber. Refer to Caging the Rear Air Brake Chamber .
  3. Drain all air reservoirs. Refer to Air Brake Reservoir Draining .
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the tire and the wheel assembly. Refer to Tire and Wheel Removal and Installation .
  6. Remove the air drum. Refer to Brake Drum Replacement .
  7. Remove the wheel hub. Refer to Front Wheel Hub, Bearing, and Seal Replacement .
  8. Remove the air line from the rear air brake chamber. Refer to Hose and Line Replacement - Nylon Push-In Type Fitting .
  9. Remove the wheel speed sensor. Refer to Front Wheel Speed Sensor Replacement .
  10. Remove the bolts and the washers.
  11. Remove the rear brake assembly from the rear axle.

Installation Procedure

    Caution: Refer to Brake Dust Caution in the Preface section.


    Object Number: 201768 Size: SH
  1. Install the rear brake assembly to the rear axle.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the washers and the bolts.

    3. Tighten
    Tighten the rear cam brake assembly bolts to 220 N·m (162 lb ft).

  3. Install the wheel speed sensor. Refer to Front Wheel Speed Sensor Replacement .
  4. Install the air line to the rear air brake chamber. Refer to Hose and Line Replacement - Nylon Push-In Type Fitting .
  5. Install the wheel hub. Refer to Front Wheel Hub, Bearing, and Seal Replacement .
  6. Install the air drum.
  7. Adjust the rear wheel bearings, if needed. Refer to Wheel Bearing Adjustment .
  8. Install the tire and the wheel assembly. Refer to Tire and Wheel Removal and Installation .
  9. Remove the safety stands and lower the vehicle. Refer to Lifting and Jacking the Vehicle .
  10. Start the engine.
  11. Charge the air system to the air compressor governor valve cut-out point.
  12. Check for the proper brake operation.
  13. Stop the engine.
  14. Set the parking brake.
  15. Remove the wheel blocks.