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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1147 (Drum Brake System) >> Repair Instructions >> Drum Brake Adjustment >> Adjustment Procedure

Adjustment Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Refer to Brake Dust Caution in Cautions and Notices.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the rear wheels and tires. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Relieve cable tension from the park brake system at the equalizer. there should be no tension on the park brake cables, so that the brake shoes are positioned only by the adjuster strut.
    4. Fig 1: Setting J 21177-A To Widest Inside Diameter Of Drum
    GM750555Courtesy of GENERAL MOTORS CORP.
  4. Remove the rear drums. Refer to Brake Drum Replacement .
  5. Set the J 21177-A  so that theJ 21177-A  contacts the inside diameter of the drum at the widest point. See Special Tools and Equipment .
    6. Fig 2: Setting J 21177-A To Widest Point Of Parking Shoes
    GM750553Courtesy of GENERAL MOTORS CORP.
  6. Position the J 21177-A  over the shoes at the widest point. See Special Tools and Equipment .
  7. Turn the adjuster nut until the shoes just contact the J 21177-A  . See Special Tools and Equipment .
  8. Repeat steps 2-7 for the other rear brake assembly.
  9. Install the rear drums. Refer to Brake Drum Replacement .
  10. Install the rear wheels and tires. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  11. Adjust the park brake cable system. Refer to Park Brake Adjustment (Disc) or Park Brake Adjustment (Drum) in Park Brake.
  12. Lower the vehicle.
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