34 41 006 Adjusting parking brake

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The parking brake test must be carried out on the dynamic brake analyzer as follows.

Release position:

Wheel circumferential force right/left ≤ 300 N.

Press parking brake button:

Car must be pulled uniformly out of brake roller or drive of brake roller is deactivated on both sides.

Fig 1: Identifying Dynamometer
Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Accurate adjustment of the parking brake is only possible if the parking brake Bowden cables and all moving parts on the parking brake move easily and function correctly.
Basic setting of the parking brake is required:

After replacing brake shoes
Brake discs are replaced

Adjustment specification for brake shoes
Release parking brake (switch on center console).

Approach installation position using BMW diagnosis system.

Completely unscrew one wheel stud on each rear wheel.

Installation :

Install and tighten wheel bolt.

Tightening torque, 36 10 1AZ .

Fig 2: Locating Wheel Bolt
Courtesy of BMW OF NORTH AMERICA, INC.

Turn adjusting screw with a screwdriver until it is no longer possible to turn the wheel.

Then unfasten the adjusting screw 10 notches.

Fig 3: Turning Adjusting Screw Using Screwdriver
Courtesy of BMW OF NORTH AMERICA, INC.
Breaking in duo-servo parking brake
1. 2.1 On brake dynamometer:
  1. 2.1.1 Call up breaking-in program via diagnosis interface using DIS diagnosis system.
    (Parking brake indicator lamp in instrument cluster flashes at low frequency)
  2. 2.1.2 Drive vehicle onto brake analyzer and pull parking brake button once.
  3. 2.1.3 Parking brake is applied at approx. 15 km/h with reduced force.
    
    Fig 4: Display - Brake Dynamometer Screen
    Courtesy of BMW OF NORTH AMERICA, INC.
    
    (Parking brake indicator lamp in instrument cluster flashes at high frequency)
  4. 2.1.4 Breaking-in procedure takes 3 minutes.
  5. 2.1.5 Breaking-in procedure can be terminated by pressing the parking brake button.
  6. 2.1.6 Delete fault memory.
2. 2.2 When road-testing (if possible on company property or an unused road):
  1. 2.2.1 Call up breaking-in program via diagnosis interface using DIS diagnosis system.
    (Parking brake indicator lamp in instrument cluster flashes at low frequency)
  2. 2.2.2 Pull parking brake button once.
    Increase driving speed to 15 km/h, breaking-in distance is 400 meters.
  3. 2.2.3 Parking brake is applied with reduced force.
    (Parking brake indicator lamp in instrument cluster flashes at high frequency)
  4. 2.2.4 Breaking-in procedure can be terminated by pressing the parking brake button.
  5. 2.1.6 Delete fault memory.