34 11 552 Overhauling left or right front brake caliper (TRW) (brake caliper removed)
Special tools required:
- 00 9 316 . See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS -- CLUBMAN .
Risk of injury!
Carefully force piston out through connection bore with compressed air.
To protect piston, place a protective plate (e.g. hard wood or hard felt) in caliper recess.
Do not grip piston with fingers - risk of trapping!
Press off dust sleeve (1).
Carefully remove seal (1) with special tool 00 9 316.
Clean cylinder bores and parts with alcohol and dry with compressed air.
Thoroughly inspect cylinder bore, piston and flange surfaces.
Machining of cylinders and pistons is not permitted.
Install new seal.
Installation:
Apply a light coat of ATE brake cylinder paste to cylinder bore, piston and seal.
Fit dust sleeve (1) in groove (2) of brake caliper housing and press into the annular groove.
Installation:
The area between the dust sleeve and the brake caliper housing must be kept dry. It must not come into contact with ATE brake cylinder paste or brake fluid so as to ensure that the dust sleeve is perfectly seated.
Lightly press brake piston against dust sleeve (1).
Inflate dust sleeve with compressed air (max. 2 bar) via the connection hole. Dust sleeve snaps over brake piston.
Installation:
Coat dust sleeve and brake piston with brake fluid to facilitate installation of dust sleeve.
Press piston into cylinder bore until dust sleeve (1) snaps into annular groove (2) of brake piston.