34 11 220 Removing and Installing/Replacing Both Front Brake Discs

34 11 220 Removing and installing/replacing both front brake discs

Special tools required:







IMPORTANT:
Brake discs must only be replaced in pairs (per axle).
Fit new brake discs only together with new brake pads.







Necessary preliminary tasks:
- Remove front brake pads

After completing work, read and comply with notes on braking in new brake discs / brake pads .







Release screws (1).
Remove brake caliper with brake anchor plate in direction of arrow and tie up.

Installation:
Tightening torque 34 11 2AZ .







Check minimum brake disc thickness:
- Position special tool 34 1 280 at three measuring points in area (1) and measure.
- Compare measurement result and lowest value with set point value .







IMPORTANT: New brake pads may only be fitted if the brake disc thickness is greater than the minimum brake disc thickness (MIN TH).







Release screw (1) and remove brake disc.

Installation:
Replace screw (1).
Tightening torque 34 11 1AZ .
Clean contract face of wheel hub thoroughly and remove any traces of rust if necessary.
Irregularities in the contact surface can cause distortion in the brake disc.







IMPORTANT: When removing the brake disc: On no account strike the friction ring with a hammer or similar object. If necessary, carefully tap with a rubber hammer against the brake disc nave.