34 33 505 Removing and Installing/Replacing Brake Booster

WARNING: This page is about a different car, the 2010 BMW X5, 2009 BMW X5, 2008 BMW X5, and 2007 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Read and comply with General Information. See General Information
Remove brake master cylinder. See 34 31 505 Removing and Installing / Replacing Master Brake Cylinder for DSC
Remove left footwell trim. See 51 45 185 REMOVING AND INSTALLING/REPLACING PANEL FOR PEDALS

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. See 34 11 FRONT BRAKE

Fig 1: Detaching Locking Clip From Brake Pedal

Courtesy 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.

Remove non-return valve (1) from brake booster.

Carefully pull brake booster (2) out of bulkhead and tilt out.

If necessary, press brake lines to one side slightly.

Fig 2: Removing Non-Return Valve From Brake Booster

Courtesy of BMW OF NORTH AMERICA, INC.