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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1543 (Drum Brake System) >> Repair Instructions >> Drum Brake Adjustment >> Tools Required

Tools Required

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

J 21177-A  Drum-to-Brake Shoe Clearance Gage. See Special Tools .

CAUTION: Refer to Brake Dust Caution .
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the rear wheels and tires. Refer to Tire and Wheel Removal and Installation .
  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 the J 21177-A  contacts the inside diameter of the drum at the widest point. See Special Tools .
    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 .
  7. Turn the adjuster nut until the shoes just contact the J 21177-A  . See Special Tools .
  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 .
  11. Adjust the park brake cable system. Refer to Park Brake Adjustment .
  12. Lower the vehicle.
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