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Home >> BMW >> 2009 >> M3 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 67 (Brakes - Repair - E90) >> Brake Booster >> 34 33 505 Removing and installing or replacing brake booster

34 33 505 Removing and installing or replacing brake booster

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks 

Detach locking clip (1) from brake pedal, disengage and pull out locking pin.

Unscrew nuts (2).

Installation: 

Replace self-locking nuts.

Tightening torque 35 11 1AZ .

Fig 1: Identifying Brake Pedal Locking Clip With Mounting Bolts
G04726652Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Do not use any force when removing and installing the brake unit; the brake unit can be damaged under certain circumstances.

Brake lines must not be bent.

Carefully pull brake booster (1) out of bulkhead and tilt out.

If necessary, disengage brake line from holder on bulkhead and press slightly to one side.

Replacement 

Modify NON-RETURN VALVE  .

Fig 2: Pulling Brake Booster And Nuts
G04726671Courtesy of BMW OF NORTH AMERICA, INC.