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Home >> BMW >> 2012 >> 335is 2D Coupe >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Repair - E92 >> Brake Booster >> 34 33 071 Replacing vacuum hose for brake booster (N54)

34 33 071 Replacing vacuum hose for brake booster (N54)

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
G09849847Courtesy of BMW OF NORTH AMERICA, INC.


Necessary preliminary tasks 

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: Pulling Out Vacuum Line
G04726667Courtesy of BMW OF NORTH AMERICA, INC.

Pull off vacuum hose (1).

Unlock and disconnect quick-connect coupling (2).

Unclip vacuum line from holder (3) and feed out.

Fig 2: Identifying Vacuum Line From Holder
G09849849Courtesy of BMW OF NORTH AMERICA, INC.