34 33 071 Replacing vacuum hose for brake booster (M57TU / M57T2 / M47T2)

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.

Read and comply with General Information.

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:

Remove lower section of microfilter housing. See MICROFILTER .

Installation:

Replace hose clamps.

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

Fig 1: Identifying Non-Return Valve

Courtesy of BMW OF NORTH AMERICA, INC.

Detach vacuum hose from holder (1).

Unfasten hose clip (2).

Detach molded hose from PA tube.

Installation:

Replace hose clip.

Fig 2: Identifying Holder And Hose Clip

Courtesy of BMW OF NORTH AMERICA, INC.