Replacing Vacuum Hose For Brake Booster (M54)

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.
^ Remove lower section of microfilter housing.





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:
Replace hose clip.