Caliper Disassembly

Fig. 3 Removing Piston:

Fig. 4 Removing Boot Ring:

Fig. 5 Removing Lever Return Spring:

1. Remove caliper from vehicle as described under ``Caliper Replace.''
2. Pad interior of caliper assembly with a clean shop towel, then remove piston assembly using low pressure compressed air into caliper inlet hole, Fig. 3. Do not place fingers in front of piston in an attempt to catch or protect piston when applying compressed air. This could result in serious injury.
3. Using a small screwdriver, pry up one end of boot ring, Fig. 4. Work boot ring out of caliper groove.
4. Using a small wooden or plastic tool, remove piston seal from caliper bore groove.
5. Remove bleeder valve and bleeder valve cap.
6. If lever return spring replacement is required, remove by using a screwdriver to disengage return spring from parking brake lever, then unhook spring from stopper pin, Fig. 5.
7. Remove pin boot, pin bolt, bolt sleeve and sleeve bolt from caliper body.
8. Remove pin bolt and pin sleeve from caliper support.
9. Clean all parts in clean denatured alcohol, then dry with unlubricated low pressure compressed air. Blow out all passages in caliper body and bleeder valve.
10. Inspect piston assembly for nicks, cracks, wear or corrosion. Replace piston if any damage is found.
11. Inspect piston bore for scoring, nicks, wear or corrosion. Use crocus cloth to polish out light corrosion. Replace caliper if any heavy corrosion is found. Do not hone caliper bore.
12. Inspect seal groove for nicks or burrs. If found, replace caliper.
13. Inspect boots for cuts, tears or deterioration. If damaged, replace boots.
14. Inspect bolt sleeve and pin sleeve for corrosion or damage. Replace corroded or damaged sleeves. Do not attempt to polish away corrosion.