34 33 071 Replacing vacuum hose for brake booster (M54)
WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.
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.
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. See MICROFILTER .
Detach non-return valve (1) from brake booster.
Unfasten hose clip (1).
Detach molded hose (3) from PA tube.
Withdraw molded hose (3) from fixture (2).
Installation:
Replace hose clip.