Caliper Disassembly

Fig. 6 Applying Compressed Air To Caliper Line Port:

Fig. 7 Removing Dust Boot:

1. Clean outside of caliper, then drain brake fluid from caliper.
2. Use clean shop towels to pad interior of caliper assembly, then remove piston by directing compressed air into caliper brake hose inlet hole, Fig. 6. Use just enough air pressure to ease piston out of bore. Do not place fingers in front of piston for any reason when applying compressed air. This could result in serious personal injury.
3. Using a screwdriver, remove dust boot from caliper bore, Fig. 7.
4. Using a small piece of wood or plastic, remove piston seal from bore. Do not use a metal tool of any kind to remove seal as it may damage bore.
5. Remove bleeder valve.
6. Inspect piston for scoring, nicks, corrosion, and wear and replace as needed.
7. Inspect caliper housing and seal groove for corrosion, nicks, scoring and excessive wear, and use crocus cloth to polish away corrosion from housing bore. Replace caliper housing if corrosion in and around seal groove will not clean up with crocus cloth.
8. Clean all parts with denatured alcohol. Dry with unlubricated compressed air. Blow out all passages in housing and bleeder valve.