SEAT Workshop Service and Repair Manuals

Installation –  The surface of the piston and seal should be cleaned using only methylated spirits and then dried. –  Apply a thin coat of assembly paste G 052 150 A2 to piston and seal before inserting. –  Insert seal in brake caliper.

–  Place protective cap with outer sealing lip on piston.

–  Screw thrust nut onto spindle until dimension -a- 15 mm is achieved.

–  Insert inner sealing lip of protective cap into groove -arrows- in brake caliper using removal wedge -3409-. –  Push the piston onto thrust nut; this is only possible in 4 positions –  Carefully press the piston into brake caliper, moving the piston at the same time.

–  Then, press the piston into the brake caliper until it is resting against the thrust nut.

–  Carefully turn spindle clockwise until thrust nut is located on stop.

–  Ensure that protective cap lies flush all around on brake caliper -arrows-.

–  Press piston into brake caliper by hand. The outer sealing lip will then spring into the piston groove.