34 33 000 Removing and installing or replacing brake booster

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

Necessary preliminary tasks:

Read and comply with General Information. See 34 00... General Information and 34 00... General information on braking in new brake discs / brake pads .
Remove brake master cylinder .
Remove left footwell trim . See 51 45 180 REMOVING AND INSTALLING/REPLACING BOTTOM RIGHT INSTRUMENT PANEL TRIM .

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

Unscrew nuts (2).

Installation:

Replace self-locking nuts.

Tightening torque. See 34 33 1AZ.

Fig 1: Identifying Locking Clip And 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: Identifying Non-Return Valve And Holder

Courtesy of BMW OF NORTH AMERICA, INC.

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