Disc Brake Caliper: Disassembly
- Raise and support vehicle. Remove tire and wheel assembly.
- Remove the caliper from the vehicle. See DISC BRAKE CALIPERS under REMOVAL & INSTALLATION.
- Use just enough air pressure to ease the piston out of the bore. You can damage a blow-out piston even with the padding. Insert a block of hard wood or a shop cloth into the caliper interior to catch the piston as it is forced out of the bore with compressed air.
- Remove the piston from the caliper by applying compressed air to the caliper brake hose connector hole.
- Remove the rubber boot from the caliper groove.
- Use a flat plastic tool in order to remove the piston seal from the caliper groove.
- Remove the bleeder valve from the caliper.
- Clean the following items in brake fluid:
- The Caliper Set Ring
- The Piston
- The Caliper Cylinder Bore
- Inspect the piston for scoring, corrosion and any damage to the chrome plating. Replace the piston if any of these conditions exist.
- Inspect the caliper cylinder bore for scoring, pitting and corrosion. Use a crocus cloth to polish out any light corrosion. If the corrosion cannot be removed, replace the caliper.
CAUTION:
Do not place your fingers in front of the piston in order to catch or protect the piston while applying compressed air. This could result in serious injury.