Rebuild

Caliper Assembly:

NOTE: Do not use a screwdriver or any similar tool to pry piston into or out of the bore to prevent chipping or scuffing damage to the phenolic piston.

DISASSEMBLY

1. Remove the caliper assembly. Place a block of wood over the piston before applying air pressure to prevent damage to the piston.

Removing Piston:

WARNING: Do not place fingers in front of piston in an attempt to catch or protect it when applying compressed air. This could result in serious injury.

2. Apply air pressure to the fluid port in the caliper with a rubber-tipped nozzle to remove the piston. If the piston is seized and cannot be forced from the caliper, tap lightly around the piston while applying air pressure.
3. Remove the dust boot from the caliper assembly.
4. Remove the rubber piston seal from the cylinder and discard it.

CLEANING AND INSPECTION

^ Clean all metal parts with isopropyl alcohol or brake parts cleaner. Then, clean out and dry the grooves and passageways with compressed air. Make sure caliper bore and component parts are thoroughly clean.
^ Check the cylinder bore and piston for damage or excessive wear. Replace the piston if it shows signs of pitting, scoring or cracks.

ASSEMBLY

1. Apply a film of clean brake fluid to the new caliper piston seal, and install it in the cylinder bore. Be sure the seal does not become twisted but is firmly seated in the groove.
2. Install a new dust boot by setting the flange squarely in the outer groove of the caliper bore.
3. Coat the piston with brake fluid, and install the piston in the cylinder bore.
4. Spread the dust boot over the piston as it is installed. Seat the dust boot in the piston groove.
5. Install the caliper.