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Bed In Parking Brake According To Instructions

NOTE: When the parking brake is operated the catch of the pedal or hand lever must not lock in position.
    CAUTION: Since the brake lamps do not light up, particular attention must be paid to following traffic!
  1. Driving on dry road, initial speed approx. 50 km/h, operate the pedal or parking brake hand lever 2 to 3 times with 100 to 200 N and brake the vehicle to a standstill.
  2. Driving on dry road at a constant speed of approx. 50 km/h, actuate the parking brake pedal or hand lever with a force of MAX. 100 N for 10 seconds.
  3. Drive on the dynamometer or function test stand at a constant speed of 50 km/h (3rd gear). Actuate the parking brake pedal or hand lever with a force of 100 N for 10 seconds. The specified force must not be exceeded.
  4. On the brake test stand operate the pedal or parking brake hand lever for approx. 2 minutes with a constant force of 150 to 200 N.
    NOTE: Do not lock the parking brake pedal or hand lever! When bedding in the brakes, heat causes the brake disc bowl to expand, reducing the operating forces. The bedding-in procedure can be repeated when the parking brake has cooled.
  5. If the parking brake does not release satisfactorily after the test, or pulls to one side after bedding in the brakes and adjusting (maximum permissible deviation from higher value: 50%), check brake shoes and brake cables and replace if necessary.
    NOTE: The German specifications specify a minimum retardation of 20% for the parking brake. The retardation is the ratio of the sum of the braking forces at the wheels to the gross weight. A maximum deviation of 50% from the higher value is permissible. The regulations for other countries should be observed in each case.
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