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34 33 071 Replacing vacuum hose for brake booster (N47, N47S)

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Necessary preliminary tasks: 

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

Unlock quick-release fasteners (1) and detach vacuum line (2).

Fig 1: Identifying Quick-Release Fasteners And Vacuum Line
G10095897Courtesy of BMW OF NORTH AMERICA, INC.