34 33 071 Replacing vacuum hose for brake booster (N52 on brake booster)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Read and comply with General Information .
Remove lower section of microfilter housing . See 64 31 092 REMOVING AND INSTALLING/REPLACING MICROFILTER HOUSING (LOWER SECTION) .

IMPORTANT: Before beginning work, fully press the brake pedal several times to reduce the vacuum pressure in the brake booster.

Unlock quick-release fastener (1) and pull out vacuum line (2).

Fig 1: Identifying Quick-Release Fastener And Vacuum Line

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten hose clip or quick-release fastener (1).

Installation:

Replace hose clip.

Pull off vacuum hose (2).

Unclip vacuum line (4) from fixture (3) and feed out.

Fig 2: Identifying Quick-Release Fastener, Vacuum Line Hose And Fixture

Courtesy of BMW OF NORTH AMERICA, INC.