Piston For FN3 Brake Caliper, Removing and Installing

Piston for FN3 brake caliper, removing and installing

Special tools, testers and auxiliary items required





^ Wedge 3409





^ Piston resetting tool T10145

Removing





- Force piston out of brake caliper housing using compressed air.

Note: Place a piece of wood into the recess, so that the piston is not damaged.





- Remove seal with wedge 3409.

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

Installing
- The surface of the piston and seal must only be cleaned with mineral spirits and then dried.
- Thinly coat piston and seal with assembly paste G 052 150 A2 before installing.
- Insert oil seal in brake caliper housing.





- Place protective seal with the outer sealing lip on the piston.





- Using wedge 3409, insert inner sealing lip into the groove in the cylinder.

Note: When doing this hold piston in front of caliper housing.





- Press piston into brake caliper housing using piston resetting tool.

Note: The outer seal lip of the protective cap thereby slips into the groove on the piston.