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9. Brake system

Working brake system
 The most important elements of the working brake system
 Brake fluid
Protivobuksovochny system (ASR)
Electronic control by a butterfly valve
 BAS (Brake-Assist) system
Electronic system of stabilization (ESP)
Operation of the ABS/ASR/BAS/ESP systems
Check of brakes
Parking brake system
 Check of efficiency of operation of the parking brake
Check of level of brake fluid
 Check of the brake system on existence of leakages and damages
Check of the amplifier of brakes
 Check of thickness of slips
 Check of a condition of brake disks
 Replacement of front brake shoes
 Replacement of back brake shoes
 Removal of a support
 Removal of a brake disk
 Removal of a brake hose
 Removal of brake pipelines
Pumping of the brake system
 Replacement of brake fluid
Adjustment of the parking brake
 Removal of brake shoes of the parking brake
 Replacement of cables of the parking brake
 Possible malfunctions of the brake system, their reason and ways of elimination




Cars are equipped with two systems of brakes working independently from each other — working and parking. In case of refusal one of systems can stop the car by means of another. The system is divided into two contours.
The first is responsible for braking of forward wheels, the second — back. At failure of one contour, for example because of leakage, the car can be stopped by other contour. In this case to receive the same effective braking, as well as at the serviceable brake system, it is necessary to press a brake pedal with considerably big effort. The course of a pedal increases, and the brake way is considerably extended.
The working (foot) hydraulic brake system on the Mercedes models of the E-class consists of the main brake cylinder, the amplifier and disk brakes on forward and back wheels. Pressure in both brake contours is created in the dual main brake cylinder when pressing a brake pedal.