Front Caliper Piston, Removing and Installing

Front Caliper Piston, Removing And Installing
Special Tools And Equipment Required





^ 3409 Wedge





^ VAG 1331 Torque wrench or equivalent
^ Piston resetting tool

Removing





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

Note:
^ Place a piece of wood in the recess to prevent damaging the piston.





- Remove seal using wedge 3409.

Note:
^ When removing the piston seal make sure that the cylinder bore is not damaged.

Installing
- Thinly coat piston and piston seal with assembly lubricant G 052 150 A2 before inserting.





- Place protective seal with outer sealing lip on piston.





- Hold piston in front of caliper and insert inner sealing lip into groove in cylinder using wedge 3409.





- Press piston into brake caliper housing using piston resetting tool.
^ The protective seal outer sealing lip must slip into the piston groove.