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

WARNING: This page is about a different car, the 2007 BMW 550i, 2006 BMW 550i, 2005 BMW 545i, and 2004 BMW 545i. 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.

Necessary Preliminary Tasks:

Read and comply with General Information. Refer to 34 00 ... GENERAL INFORMATION .
Remove lower section of microfilter housing. Refer to 64 31 061 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT MICROFILTER HOUSING LOWER SECTION .

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

Fig 1: View Of Non-Return Valve

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten hose clip (1).

Detach moulded hose (3) from PA tube.

Withdraw moulded hose (3) from fixture (2).

Installation:

Replace hose clip.

Fig 2: Identifying Moulded Hose

Courtesy of BMW OF NORTH AMERICA, INC.