34 31 505 Removing and Installing/Replacing Master Brake Cylinder for DSC

34 31 505 Removing and installing / replacing master brake cylinder for DSC







Necessary preliminary tasks:
- Read and comply with General Information.
- Remove expansion tank.
- Remove brake booster.

After completing repair work, bleed brake system with DSC.







Set brake booster down on a suitable surface.
Release nuts (1) and withdraw brake master cylinder (2) from brake booster (3).

Installation note:
Replace self-locking nuts.
Tightening torque 34 31 1AZ.







Installation note:
Replace sealing ring (1).

When inserting the brake master cylinder into the brake servo, make sure the pushrod of the brake servo and the brake master cylinder are in perfect alignment.







F04 only:
The brake pedal travel sensor has to be transferred when the brake master cylinder is replaced.
The following service function must be performed after completing the repair work:
- Calibrate brake pedal travel sensor.