Rear Brake Caliper Piston

Rear Brake Caliper Piston

Special tools, testers and auxiliary items required

• Resetting and extracting tool (T10165)

• Disassembly wedge (3409)

Removing

- Remove piston from brake caliper by turning knurled wheel toward left.

Insert piston compressing and extracting tool so collar makes contact on piston.






• For pistons that are difficult to move, an open-end wrench (size 13 mm) can be applied at the appropriate wrench surface - arrow A -.

- Remove seal using (3409).






Installing

- The surface of the piston and seal must only be cleaned with mineral spirits and then dried.

- Thinly coat piston and seal with lithium grease (G 052 150 A2) before inserting.

- Insert oil seal in brake caliper housing.

- Place protective cap with outer sealing lip on piston.






- Using (3409) , insert inner sealing lip into cylinder groove.






• Hold piston in front of caliper housing for this procedure.

- Set (T10165) against piston of brake caliper housing.






- Install the piston by turning knurled wheel toward right.

• By resetting the piston with a piston resetting tool, the automatic adjustment in the brake caliper is destroyed.

• If the piston is difficult to move, use a 13 mm open end wrench on the flats - arrow - provided for this purpose.

- Insert brake pads.

Pre-Bleed Brake Caliper

- Open bleeder screw - arrow A - and using a standard bleeder bottle, fill with brake fluid until bubble-free brake fluid flows from the threaded hole (brake hose connection) - arrow B -. Close bleeder valve.






• Position brake caliper as shown during pre-bleed procedure.