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Home >> Chevrolet >> 2003 >> Cavalier Base, 4D Sedan, L61/KL6 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc Brakes & Drum Brakes >> Adjustments & Inspections >> Drum Brake System >> Drum Brake Adjustment

Drum Brake Adjustment

  1. Release the tension from the park brake cable system. See DISABLING PARK BRAKE CABLE AUTOMATIC ADJUSTER  .
  2. Raise and support the vehicle. Remove the tire and wheel assembly.
  3. Remove the brake drum. See BRAKE DRUM  under REMOVAL & INSTALLATION.
  4. Measure the inside diameter of the drum using the Brake Drum/Shoe Clearance Gage (J-21177-A) as shown in part A of the illustration. See Fig 1 .
  5. Firmly hand tighten the set screw on the Brake Drum/Shoe Clearance Gage.
  6. Remove the Brake Drum/Shoe Clearance Gage from the brake drum and position it over the corresponding brake shoe assembly at its widest point.
  7. While holding the Brake Drum/Shoe Clearance Gage in position, insert a 0.025 in. (0.635 mm) feeler gage between one side of the Brake Drum/Shoe Clearance Gage, and the corresponding brake shoe.
  8. Rotate the brake shoe adjuster screw until the brake shoes contact the Brake Drum/Shoe Clearance Gage, and the feeler gage to a specification of 0.025 in. (0.635 mm).
  9. Repeat the above steps for the opposite brake drum and brake shoe assembly.
  10. Install the brake drums. See BRAKE DRUM  under REMOVAL & INSTALLATION.
  11. Restore the tension to the park brake cable system. See ENABLING PARK BRAKE CABLE AUTOMATIC ADJUSTER  .
  12. Adjust the park brake. See PARKING BRAKE ADJUSTMENT  .
  13. Install the rear tire and wheel assemblies. Lower the vehicle.
Fig 1: Drum Brake Adjustment
G00076355Courtesy of GENERAL MOTORS CORP.
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