Warning! To prevent injury, never place fingers or hands inside the caliper opening when removing the pistons. Always wear eye, hand and face protection when using compressed air. Eye, face and skin damage will result from direct contact with compressed air.
Warning! Make sure the seal grooves in the caliper bores are not damaged during the removal of the seals. Damage to the seal grooves may allow brake fluid to leak past the seals resulting in a dangerous riding condition leading to loss of motorcycle control and an accident.
1. Cover the caliper opening with a clean heavy cloth and using either compressed air or by reconnecting the master cylinder and pumping the brake lever, remove the pistons one at a time.
1. Dust seal; 2. Piston seal; 3. Pistons; 4. Caliper
2. Extract the dust seals and piston seals, taking care not to damage the caliper bores. Discard the old seals, these must not be reused.
Note: The piston seals are slightly thicker than the dust seals.
1. Piston seals; 2. Dust seals
3. Check the pistons, caliper and mounting bracket for signs of damage, paying particular attention to the caliper bores and pistons. If damage is present, renew the worn component or the complete caliper assembly.