34 11 220 Removing and installing/replacing both front brake discs
Necessary preliminary tasks:
- Remove wheels, see 36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL .
- If necessary, remove and clean brake pads, see 34 11 000 Removing and installing/replacing brake linings of both front disc brakes .
Brake discs may only be replaced in pairs (for each axle).
If the brake discs are replaced, you must also fit new brake pads.
The brake discs of M models are tied to the direction of travel:
The uneven part number denotes the left brake disc, the even part number the right brake disc!
Read and comply with notes on braking in new brake discs / brake pads, see 34 00 ... General information on braking in new brake discs / brake pads .
Unfasten screws (1), remove brake caliper and fasten up.
Installation:
Tightening torque: 34 11 2AZ, see 34 11 FRONT BRAKE .
Unscrew bolts and take off brake disc.
Installation:
Replace brake disc retaining screw.
Thoroughly clean contact surface of wheel hub and remove traces of corrosion if necessary.
Unevenness on contact surface may result in distortion of brake disc!
Tightening torque: 34 11 1AZ, see 34 11 FRONT BRAKE .
Never remove or reposition balance clips.