34 41 135 Removing And Installing Or Replacing Both BOWDEN Cables For Parking Brake

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

IMPORTANT: Read and comply with 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 instructions on raising the vehicle. See 00 ... ... LIFTING VEHICLE WITH A LIFTING PLATFORM .

Necessary preliminary tasks:

Remove both rear wheels.
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 . See 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

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

Fig 1: Locating Parking Brake Housing Cover Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Tightening torque. See BRAKES - TIGHTENING TORQUES -- ALPINA .

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

Fig 2: Identifying Emergency Release Tool

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 Stop And 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 Gasket, Tabs And 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 Tabs Of Seal

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Installation:

Ensure flush mounting between seal and housing.

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

Fig 6: Identifying Mounting Between Seal And 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.