Disassembly

Disc Brake Caliper Assembly-3257 Generation 2 Series:

- Clean outside of caliper, then drain brake fluid from caliper.

WARNING: Do not place fingers in front of piston for any reason when applying compressed air. This could result in serious personal injury.

Applying Compressed Air To Caliper Line Port:

- Use clean shop towels to pad interior of caliper assembly, then remove piston by directing compressed air into caliper brake hose inlet hole. Use just enough air pressure to ease piston out of bore.

CAUTION: Do not use a metal tool of any kind to remove seal as it may damage bore.

Removing Boot:

- Using a screwdriver, remove dust boot from caliper bore.
- Using a small piece of wood or plastic, remove piston seal from bore.

Caliper Assembly:

- Remove bleeder valve.

INSPECTION
- Inspect piston for corrosion, scoring, nicks, wear and damage to chrome plating. If any of the above defects are found, replace piston.
- Inspect caliper bore for corrosion, scoring, nicks, and wear. Light corrosion can be polished out using crocus cloth. If crocus cloth fails to remove corrosion, the caliper housing must be replaced.
- Clean all parts with denatured alcohol. Dry with unlubricated compressed air. Blow out all passages in housing and bleeder valve.