Inspection

1. Clean corrosion and dirt from face of piston. Inspect piston and check valve area for fluid leakage, indicated by excessive moisture around boot area.
2. Inspect dust boot for cuts, cracks or other damage which may affect its sealing ability. If leaks are present, replace dust boot. Do not use compressed air to clean caliper as it may unseat the dust boot.
3. Inspect piston boot seal. Replace boot seal if leakage is indicated.
4. Inspect for leaks at threaded end of actuator screw. Replace seal if leakage is indicated. If bore is nicked or scratched, replace caliper.