34 33 000 Removing and installing or replacing brake booster

Necessary preliminary work

Read and comply with GENERAL INFORMATION .
Remove BRAKE MASTER CYLINDER
Remove left FOOTWELL TRIM

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

Unscrew nuts (2).

Installation note:

Replace self-locking nuts.

Tightening torque 34 33 1AZ .

Fig 1: Identifying Brake Pedal Locking Clip With Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Pull non-return valve (1) in direction of arrow out of brake booster.

Unclip brake lines from holder (2).

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.

Fig 2: Pulling Non-Return Valve Out Of Brake Booster

Courtesy of BMW OF NORTH AMERICA, INC.

Carefully pull brake booster (3) out of bulkhead and tilt out in upward direction.