Mercedes C-Class

W203 since 2000 of release

Repair and operation of the car

+ Mercedes-Benz cars of class C (W-203)
+ Operation manual
+ Routine maintenance
+ Engine
+ Cooling system and heating
+ Power supply system and release
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
- Brake system
   Replacement of blocks of a forward disk brake
   Removal and installation of a forward support
   Replacement of back brake shoes
   Removal and installation of a back support
   Removal and installation of a brake disk
   Check of a brake disk
   Dual main brake cylinder
   Replacement of brake shoes of the parking brake
   Removal and installation of a cable of the drive of the parking brake
   Removal and installation of the switch of a stoplight
   Removal of air from the brake system
   Removal and installation of a brake hose
   Check of the amplifier of a brake
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Replacement of back brake shoes

Brake shoes are subject to control from bodies of technical supervision. Besides, they are intended for use in concrete model of the car. Apply the brake shoes recommended by the manufacturer. Such brake shoes have the corresponding marking.

If brake shoes are used again, then at removal they need to be marked. Shift of brake shoes from outer side on internal and vice versa, or from the right wheel on left, is not allowed. Surely replace all brake shoes of one axis at the same time, even in case the limit of wear was reached only by one of them.



1. Mark with paint the provision of back wheels concerning naves. It will allow to establish at assembly the balanced wheels in their former situation. Weaken bolts of fastening of a wheel before a car poddomkrachivaniye. Lift a back part of the car, put it on supports and remove back wheels.

Lifting operation and installations of the car on supports is connected with danger! Therefore before carrying out operation study Poddomkrachivaniye's Section and towage of Introduction to the management.

2. Beat out a pin (1) the corresponding drift (2) outside inside from a support.

At the same time the clamping spring jumps out (3).

3. Take out brake shoes from a support back.
4. If the brake shoes which were in work are established again, mark them ("internal", "external"). Thus they can be established on the former places.

At the removed support do not press a brake pedal, otherwise the piston will be squeezed out from the case. If the piston was incidentally squeezed out from the case, remove a support and give it on assembly on HUNDRED.



Before installation of brake shoes check a brake as it is described in the Section Removal and installation of a forward support.

1. Wring out the piston by means of adaptation or the hammer. When pressing on the piston brake fluid is squeezed out from the brake cylinder in the tank.

2. Insert brake shoes into a support. At the same time pay attention to the provision of the damping level (1). When using of the blocks which were already in work you watch that they were established on the former places.

Do not allow hit on frictional surfaces of a brake disk and blocks of lubricant or oil.

3. Insert lock springs behind brake shoes into a support.
4. By means of the assistant press a lock spring to brake shoes and enter a pin into an opening in a support.
5. Hammer a pin against the stop into a support.
6. Establish into place back wheels so that the marks put at removal coincided. Previously grease with a thin layer of bearing lubricant the aligning wheel disk belt on a nave. Do not grease bolts of fastening of wheels. Replace rusty bolts. Wrap bolts. Lower the car on wheels and tighten bolts cross-wise the moment of 110 Nanometers.

Several times, strongly press a brake pedal until notable resistance is felt. Thus brake shoes adjoin to a disk and hold the working position.

7. Check liquid level in the tank, if necessary add liquid to the mark MAX.
8. New brake shoes carefully earn extra. For this purpose several times slow down the car from the speed of 80 km/h to the speed of 40 km/h, slightly pressing a brake pedal. Between braking let's a brake be cooled. The first 200 km of the movement do not apply needlessly strong braking of the car.

Carry out reliability control:

· Whether brake hoses are fixed?
· Whether the brake hose is fixed in the holder?
· Whether unions for removal of air are tightened?
· Whether enough brake fluid is filled in?
· On the working engine check tightness. For this purpose press a brake pedal by effort of 200 - 300 N (20 – 30 kg) during 10 pages. The pedal should not weaken. Check all accessions for tightness.