Disassembly Procedure
WARNING:
Refer to Brake Dust Warning
.
WARNING:
Refer to Brake Fluid Irritant Warning
.
WARNING:
Use of eye goggles is necessary to prevent personal injury.
CAUTION:
Refer to Brake Fluid Effects on Paint and Electrical Components Caution
.
- Remove the brake caliper from the vehicle. Refer to Front Brake Caliper Replacement .
- Remove the brake caliper piston from the caliper bore by directing low pressure compressed air into the caliper (1) through the fluid inlet hole.
Courtesy of GENERAL MOTORS COMPANY
WARNING: Refer to Caliper Piston Removing Warning .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 piston dust boot seal (1) from the seal counterbore in the caliper (4). Discard the boot seal.
- Using a small wooden or plastic tool, remove the piston seal (3) from the caliper bore. Discard the piston seal.
- Remove the bleeder valve cap (6).
- Remove the bleeder valve (5).
- If cracks, scoring, pitting, excessive rust and/or excessive corrosion are present in the caliper bore, replace the caliper assembly.NOTE: Do not use abrasives to clean the brake caliper piston.
- If light rust or light corrosion are present in the caliper bore, attempt to remove the imperfection with a fine emery paper. If the imperfection cannot be removed, replace the caliper assembly.
- Clean the brake caliper piston bore and seal counterbore and the caliper piston with denatured alcohol or equivalent.
- Dry the caliper piston bore and counterbore and the piston with non-lubricated, filtered, compressed air.
- Inspect the caliper piston for cracks, scoring and/or damage to the plating. Replace the caliper piston if any of these conditions exist.
- Inspect the caliper mounting holes for cracks, scoring, pitting, rust and/or excessive corrosion. Replace the caliper assembly if any of these conditions exist.