Disassembly and Assembly

Disc Brake Caliper (Part 1 Of 2):

Disc Brake Caliper (Part 2 Of 2):

DISASSEMBLY
CAUTION: Do not use a screwdriver or any similar tool to pry piston out of bore. It will result in damage to piston. Cushion piston's impact against caliper when blowing it out of bore by placing a wooden block or shop towels between piston and caliper bridge. Use care because the piston can develop considerable force from pressure buildup.

1. Remove disc brake caliper.





2. Remove the caliper piston from caliper bore by blowing it out with air pressure. Cushion piston impact by inserting a wooden block or shop towel between piston and housing. Apply air pressure to the fluid port in the caliper with Air Nozzle Assembly TOOL-7000-DE or equivalent to remove caliper piston. If caliper piston is seized and cannot be forced from the disc brake caliper tap lightly around the caliper piston while applying air pressure.
3. Remove the dust boot from the disc brake caliper.
4. Remove the rubber piston seal from the caliper piston and discard it.

ASSEMBLY
1. Clean foreign material from wheel cylinder piston surfaces and lubricate with brake fluid before inserting into disc brake caliper. Always install new seal and dust boot.
2. Start caliper piston into caliper bore by hand to assure correct alignment.

Retracting Caliper:

3. When installing caliper piston back into bore, use wood block or another flat stock, like an old shoe lining assembly, between C-clamp and piston. Do not apply C-clamp directly to caliper piston surface. This can result in damage to piston. Be sure caliper piston is not cocked.
4. Make sure dust boot is tight in boot groove on caliper piston and in disc brake caliper.
5. Install disc brake caliper.