34 31 505 Removing and installing / replacing master brake cylinder for DSC
WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary work:
- Read and comply with GENERAL INFORMATION .
- Remove EXPANSION TANK .
- Remove BRAKE BOOSTER .
After completing repair work, bleed BRAKE SYSTEM WITH DSC .
IMPORTANT:
Before beginning work, fully press the brake pedal several times to reduce the vacuum pressure in the brake servo.
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.