Brake Caliper Overhaul - Front

Brake Caliper Overhaul - Front

Disassembly Procedure





Notice: Refer to Brake Caliper Notice Service Precautions in Cautions and Notices.

1. Remove the caliper. Refer to Brake Caliper Replacement - Front Brake Caliper Replacement - Front.

Caution: Do not place fingers in front of the piston in an attempt to catch or protect the piston when applying compressed air to the caliper brake hose connector hole. Serious injury could result. Use only enough air to ease the piston out of the bore. If the piston is blown out, even with the block of wood in place, damage may occur.

2. Apply unlubricated, compressed air at the hose inlet of the caliper.
3. Remove the piston from its bore and remove the piston dust seal.




4. Remove the inner seal from the bore. Avoid scratching the bore.
5. Remove the bleeder value dust cap and the bleeder valve.

Assembly Procedure





Caution: Refer to Safety Glasses Caution Safety Glasses Caution in Cautions and Notices.

Important: Do not use a hone or any other procedure to remove material from the caliper bore or the piston.


1. Clean all parts in denatured alcohol or brake fluid. Dry the parts with unlubricated, compressed air and blow out all passages in the housing and the bleeder valve.
2. Inspect the piston and caliper for scoring, nicks, or corrosion. Replace any components which show these conditions.
3. Install the bleeder valve.
4. Lubricate a new piston inner seal with brake fluid.
5. Install the piston inner seal into the groove in the caliper bore.
6. Install the piston dust seal in its groove.
7. Lubricate the piston with brake fluid.
8. Push the piston inward until it is properly seated. Make sure that the dust seal is in the correct groove in the piston and the caliper.
9. Reinstall the caliper. Refer to Brake Caliper Replacement - Front Brake Caliper Replacement - Front.
10. Bleed the brake system. Refer to Hydraulic Brake System Bleeding Service and Repair in Hydraulic Brakes.