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Front Brake Caliper: Disassembly

WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the brake caliper. Blow compressed air into the brake caliper hole in order to remove the brake caliper piston. The piston will come out through the piston boot. Inspect and replace the brake caliper piston if any of the following conditions are found:
    • Scoring
    • Nicks
    • Corrosion
    • Worn Or Damaged Chrome Plating
  2. Use a flat-bladed tool to remove the brake caliper piston boot. Do not scratch the housing bore. Remove the piston seal from the groove in the caliper bore. See Fig 1 . Use a small wooden or plastic tool. Inspect the caliper bore and the seal grooves for the following conditions:
    • Scoring
    • Nicks
    • Corrosion
    • Wear
  3. Use a piece of crocus cloth in order to polish out light corrosion. Replace the caliper housing if corrosion in and around the seal groove cannot be cleaned with a piece of crocus cloth. See Fig 1 . Inspect and replace any brake caliper bolt boots that exhibit any of the following conditions:
    • Cuts
    • Tears
    • Deterioration
  4. Inspect the caliper bolts for corrosion or damage. If corrosion is found on the brake caliper bolt shaft, replace the brake caliper bolt , and the brake caliper bolt boot. Do not attempt to polish away the corrosion. Inspect the seal groove in the caliper bore for nicks or burrs. Replace the caliper if the seal groove is damaged. Remove the bleeder valve cap and the bleeder valve from the brake caliper housing. See Fig 1
  5. Clean all the parts with clean, denatured alcohol. Dry all the parts with filtered, non-lubricated compressed air. Use filtered, non-lubricated compressed air in order to blow out all of the passages in the caliper housing and the bleeder valve.
Fig 1: Exploded View Front Caliper Assembly
G00030580Courtesy of GENERAL MOTORS CORP.