Front

Fig. 1 MR31S Dual Pin Floating Caliper Disc Brake Assembly:

1. Remove caliper assembly, refer to Removal/Installation.
2. Remove upper slide pin, torque member, pin boot and bushing.
3. Position a shop towel in caliper body, then apply compressed air through the brake hose fitting hole to remove piston and dust boot. Apply air gently, and keep hands clear.
4. Remove piston seal using finger tips. Do not use screwdriver or other tool to prevent damage to inner cylinder.
5. Reverse procedure to assemble, noting the following:
a. Inspect cylinder and piston for wear or damage and/or corrosion. Inspect caliper body and sleeve for wear.
b. Apply suitable brake fluid to inner cylinder, then install piston seal into cylinder groove. Do not wipe grease from seal and boot repair kit on piston seal.
c. Apply suitable brake fluid to piston and insert into cylinder without twisting.
d. Fill piston edge with grease from seal and boot repair kit, then install piston boot.
e. Lubricate bushing, pin boot and slide pins with grease from seal and boot repair kit.