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Front Caliper: Disassembly

WARNING: This page is about a different car, the 2003 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the front brake caliper from the vehicle. See BRAKE CALIPERS  under REMOVAL & INSTALLATION. Drain the brake fluid from the brake caliper.
  2. Place a 1 in. (25 mm) block of wood between the caliper and the piston. Install a large C-clamp over the body of the brake caliper with the C-clamp ends against the rear of the caliper body and against the block of wood. Carefully remove the brake caliper piston by directing low pressure compressed air into the brake caliper inlet hole.
  3. Remove the C-clamp form the caliper. Remove the block of wood from the caliper. Install clean cloths to pad the interior of the caliper housing between the remaining caliper piston and the caliper body.
  4. To cover the open caliper bore place a 21 in. (5 mm) block of wood between the caliper body and the brake caliper dust boot seal. Install a large C-clamp over the body of the brake caliper with the C-clamp ends against the rear of the caliper body and against the block of wood.
  5. Carefully remove the brake caliper piston by directing low pressure compressed air into the brake caliper inlet hole. Remove the C-clamp form the caliper. Remove the block of wood from the caliper.
  6. Using a small wooden or plastic tool, remove the piston dust boot seal from the seal counter-bore in the brake caliper and discard the boot seal. Using a small wooden or plastic tool, remove the piston seal from the brake caliper bore and discard the piston seal.
  7. Remove the brake caliper bleeder valve cap. Remove the brake caliper bleeder valve. See Figure . Inspect the brake caliper mounting bracket guide surfaces for corrosion and wear. Remove and replace the brake caliper mounting bracket if damaged or worn. Clean the brake caliper piston bores and seal counter-bores with denatured alcohol, or equivalent.
  8. Clean the brake caliper pistons with denatured alcohol, or equivalent. Dry the caliper piston bores and counter-bores with non-lubricated, filtered air. Dry the brake caliper pistons with non-lubricated, filtered air. Inspect the caliper bores for cracks, scoring, pitting, excessive corrosion. If light corrosion is present in the caliper bores, attempt to remove the imperfection with a fine emery paper. If the imperfection cannot be removed, replace the caliper assembly.
  9. If cracks, scoring, pitting, and excessive corrosion are present in the caliper bores, replace the caliper assembly. Inspect the caliper pistons for cracks, scoring, and/or damage. Replace the caliper pistons if any of these conditions exist.
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