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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 46 (Disc Brakes) >> Repair Instructions >> Front Brake Caliper Overhaul (JE5) >> Disassembly Procedure

Disassembly Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:

Do not place fingers in front of the caliper piston (s) in an attempt to catch or protect it when applying compressed air. The piston (s) can fly out with force and could result in serious bodily injury.

  1. GM5450506Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Use clean cloths to pad interior of caliper housing during piston removal. Use just enough air to ease the pistons out of the bores. If the pistons are blown out, even with the padding provided, it may be damaged.

    Remove the front brake caliper piston (1) from the caliper bore by directing low pressure compressed air into the caliper bore through the brake hose inlet port.

  2. Using a plastic tool, remove and DISCARD the front brake caliper piston boot (2).
  3. Using a plastic tool, remove and DISCARD the front brake caliper piston seal (3).
  4. GM5450507Courtesy of GENERAL MOTORS COMPANY

    Front Brake Caliper Bleeder Valve Cap (1) - Remove

  5. Front Brake Caliper Bleeder Valve (2) - Remove
  6. Clean the brake caliper piston bore with denatured alcohol, or equivalent.
  7. Inspect the caliper bore for cracks, scoring, pitting and corrosion.
  8. If cracks, scoring, pitting or corrosion exists, replace the brake caliper.