Replacing Vacuum Hose for Brake Booster

34 33 071 - Replacing vacuum hose for brake booster (M54)





Important!
Before beginning work, fully press the brake pedal several times to reduce the vacuum pressure in the brake booster. This makes it easier to remove the PA pipe.
Non-return valve and PA pipe are welded together and are replaced together as a single unit.

Necessary preliminary tasks:
- Read and comply with General Information Service and Repair.
- Remove lower section of microfilter housing Removing and Installing/Replacing Left or Right Microfilter Housing Lower Section.





Detach non-return valve (1) from brake booster.





Unfasten hose clip (1).
Detach moulded hose (3) from PA tube.
Withdraw moulded hose (3) from fixture (2).

Installation Note:
Replace hose clip.