CLS 550 (219.372) V8-5.5L (273.960) (2007)
Parking Brake Shoe: Procedures
AP42.20-P-4290-01TX Bed in parking brake according to instructions.
When the parking brake is pressed the locking device of the parking brake pedal must not latch, there is a risk of accident!
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.
1
Driving on dry road, initial speed approx. 50 km/h.
Press the parking brake pedal 2 to 3 times with 100 to 200 N and brake the vehicle down to a stop.
Since the brake lamps do not light up, particular attention must be paid to following traffic!
2
Driving on dry road at a constant speed of approx. 50 km/h. Press the parking brake pedal for 10 seconds with a maximum of 100 N.
3
Drive on the performance test bench and function test bench at a constant speed of 50 km/h.
Press the parking brake pedal for 10 seconds with 100 N. The specified force must not be exceeded.
4
On the brake test stand, press the parking brake pedal for approx. 2 minutes with a constant force of 150 to 200 N.
When bedding in the brakes, the brake disk bowl expands as a result of a rise in temperature and the operating forces decrease.
The bedding in procedure can be repeated after the parking brake has cooled.
5
If the parking brake does not release satisfactorily after testing or if it pulls to one side after bedding in the brakes and adjustment (maximum
permissible deviation from the higher value: 50%), check parking brake shoes and brake cables and replace if necessary.