34 33 071 Replacing vacuum hose for brake booster (N54)

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 vacuum hose.
Vacuum hose and non-return valve are welded together and are replaced together as a single unit.

Necessary preliminary tasks:

Read and comply with General Information .
Remove left partition wall for equipment compartment . See 51 71... REMOVING AND INSTALLING/REPLACING ASSEMBLY COMPARTMENT PARTITION WALL .

Detach partition wall seal upper section (1) in direction of arrow.

Remove non-return valve (2) from brake booster.

Installation:

Check seal for non-return valve and replace if necessary.

Fig 1: Removing Non-Return Valve From Brake Booster

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock quick-connect coupling (1) and detach vacuum line.

Fig 2: Unlocking Quick-Connect Coupling

Courtesy of BMW OF NORTH AMERICA, INC.