Front Brake Caliper Piston, Removing and Installing

Front brake caliper piston, removing and installing
Special tools and equipment





^ 3409 Wedge
^ Piston resetting tool

Removing





^ Force piston from brake caliper housing using compressed air.

Note:
^ Place a wooden board in the recess of the caliper housing to prevent damaging the piston.
^ Only one piston at a time can be forced out. When doing this hold the other piston in the caliper using the piston resetting tool.





^ Remove protective seal out of piston groove using 3409 wedge.
^ Remove piston.

Note: When removing make sure that the surface of the cylinder is not damaged.





^ Remove protective seal using 3409 wedge.





^ Remove seal using 3409 wedge.

Note: When removing make sure that the surface of the cylinder is not damaged.

Installing
^ Clean surfaces of the piston and seal (use only appropriate solvent) then dry.
^ Apply a thin coat of paste G 052 150 A2 to piston and seal before installing.
^ Install oil seal in brake caliper housing.





^ Place the outer sealing lip of protective seal on the piston.





^ Using 3409 wedge, insert the inner sealing lip into the grove in the cylinder.

Note: Hold piston in front of caliper housing.





^ Press piston into the brake caliper housing as far as possible by hand.





^ Press piston into the brake caliper housing using piston resetting tool.

Note: The outer sealing lip of protective seal will then engage in the piston groove.