Front Caliper Piston, Removing and Installing

Front caliper piston, removing and installing





Special tools required

Removing





- Push piston out of brake caliper housing with compressed air.

CAUTION: Place a wooden block in the caliper to prevent damage to the piston.





- Remove seal using plastic wedge 3409 or equivalent.

CAUTION: When removing, use care to ensure that the cylinder bore is not damaged.

Installing
- Clean piston surface and seal with clean solvent only.
- Thinly coat piston and seal with lubricant G 052 150 A2 before installing.





- Place protective seal with outer sealing lip on piston.





- Install inner sealing lip in cylinder grove with plastic wedge 3409 or equivalent.

Note: Hold piston in front of caliper housing while performing this step.





- Press piston in brake caliper housing with piston resetting tool.

Note: Protective seal outer lip must seat in piston groove.