34 41 135 Removing and Installing or Replacing Both Bowden Cables For Parking Brake

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2008 BMW 750i, 2008 BMW 750Li, 2007 BMW 750i, 2007 BMW 750Li, and 2006 BMW 750i. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT:

Read and comply with General Information. See 34 00 ... GENERAL INFORMATION

With mechanical emergency release of actuating unit, max. torque at end stop 5 Nm.

Bowden cables may only be replaced in pairs.

Observe safety when raising the vehicle.

Necessary preliminary tasks:

Remove both rear wheels See 36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL
Remove brake disks See 34 21 320 REMOVING AND INSTALLING OR REPLACING BOTH REAR BRAKE DISCS
Disconnect parking brake Bowden cables from wheel brake
Unscrew holder for Bowden cables from body
Remove luggage compartment floor trim panel See 51 47 101 REMOVING AND INSTALLING/REPLACING LUGGAGE COMPARTMENT FLOOR TRIM PANEL
E67:
Remove starter battery

Release screws on parking brake housing cover and remove housing cover.

Fig 1: Locating Housing Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Tightening torque 34 41 2AZ. See 34 41 PARKING BRAKE

Release parking brake to just before end stop with emergency release tool (1) from on-board tool kit.

Fig 2: Releasing Tool From On-Board Tool Kit

Courtesy of BMW OF NORTH AMERICA, INC.

Raise end stop (1) with screwdriver.

Continue releasing parking brake with emergency release tool until assembly position is reached (cable pulleys rest on outer housing walls (2)).

Fig 3: Identifying End Stop & Outer Housing Walls

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten gasket (1) and pull out of housing a little.

Press on tabs (2) with screwdriver in order to unlock Bowden cables.

Pull Bowden cable mountings out of parking brake housing a little.

Unhook Bowden cables from cable pulleys (3).

Remove Bowden cables from below.

Fig 4: Identifying Tabs & Cable Pulleys

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Tabs of seal (1) must engage in parking brake mounting tray. End sleeves of Bowden cables must engage in parking brake housing.

Fig 5: Identifying End Sleeves Of Bowden Cables In Parking Brake Housing

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Ensure flush mounting between seal and housing.

To facilitate installation, use silicone spray (refer to BMW Parts Service) as antiseize agent.

Fig 6: Locating Flush Mounting Between Seal & Housing

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: After installing Bowden cables.

Vehicle at standstill.
Ignition turned on.
Touch parking brake button three times at intervals of 5 seconds.
Carry out brake test on brake analyzer.
- Drive car with rear axle only onto dynamic brake analyzer.
- Engine off.
- Touch parking brake button and ensure uniform increase.