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.

Fig 1: Removing Vacuum Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary tasks:

Read and comply with GENERAL INFORMATION .

IMPORTANT: Do not kink vacuum line.
Vacuum line and brake lines must not touch each other in area of brake booster!

Fig 2: Identifying Vacuum Line, Brake Booster And Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Detach vacuum line (1) from brake booster (2).

Installation:

Check seal (3), replace if necessary.

Pull off vacuum hose (1).

Unclip vacuum line from holder (2).

Disconnect snap fastener (3) and remove vacuum line.

Installation:

Snap fastener must be felt and heard to snap into place.