Mercedes C-Class

W203 since 2000 of release

Repair and car operation

+ Mercedes-Benz Cars of a class C (W-203)
+ Operation manual
+ Routine maintenance
+ Engine
+ cooling and heating Systems
+ 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 a drive of the parking brake
   Removal and installation of the switch of a stoplight
   Air removal from brake system
   Removal and installation of a brake hose
   Check of the amplifier of a brake
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Removal and installation of a brake hose

Observe rules of the treatment of the brake liquid, described in the Section air Removal from brake system.

Pipelines of brake system carry out communication of the main brake cylinder with four wheel cylinders. Communication between rigid and mobile parts of brake system, for example, between supports is carried out by flexible hoses of a high pressure. In the presence of visible damages the last should be replaced.

Do not allow contact of brake hoses to oil or fuel, do not paint them and do not cover with means for protection of the bottom of the car against corrosion.

If one of chambers of the tank of brake liquid is completely emptied (for example, in the presence of a leakage in brake system or if at removal of air forgot to add in the tank liquid), in system air which gets to the pump ABS is sucked in. Air from brake system in this case should be removed on HUNDRED with use of the special device.



1. Suck away a syringe brake liquid from the tank.
2. Mark with paint the provision of wheels concerning naves. It will allow to establish at assembly otbalansirovanny wheels in their former situation. Weaken bolts of fastening of a wheel before a car poddomkrachivaniye. Lift the car, put it on supports and remove wheels.

Operation of lifting and car installation on supports is connected with danger! Therefore before carrying out operation familiarize with Poddomkrachivaniye's Section and Introduction towage to the management.

First operation. Disconnect a brake hose from the pipeline.

3. Turn out a hollow bolt (1) and disconnect the brake pipeline (2) from a hose.

The brake hose thus should not be braided.

4. Remove a bracket (3) and take out a hose from the holder.
5. The brake pipeline and a hose at once close jams.

At a vskryvaniye of a brake contour brake liquid follows. Merge it in a bottle which should be intended only for these purposes. Previously it is possible to suck away liquid from the tank by means of the special device.

6. Brake of a forward wheel: Take out a brake hose from the holder on an amortization rack.
Second operation. Turn out a brake hose from a support.

7. Turn out a brake hose (1) of a support (2).

Brake liquid follows from a connecting opening of a support. Observe precautionary measures.



Establish the hoses recommended by manufacturer.

1. Fix a brake hose in a support the moment 18Нм.
2. Brake of a forward wheel: Stretch a hose through the holder on an amortization rack.
3. Fix a hose in holders and insert into a lock bracket. Screw a hollow bolt of the brake pipeline in a connecting element of a hose and fix the moment 14Нм.

Do not allow twisting of a brake hose.

4. Air removal from brake system address to appropriate section.
5. After air removal from brake system fill the tank with liquid to a mark of MAX and screw a cover.
6. Establish to the place of a wheel so that the marks put at removal coincided. Previously grease with a thin layer of bearing greasing aligning belt of a disk of a wheel on a nave. Bolts of fastening of wheels do not grease. Rusty bolts replace. Wrap bolts. Lower the car on wheels and tighten bolts cross-wise the moment 110Нм.

The brake hose at complete turn of a steering wheel to the right and to the left, and also when lifting and lowering car on shock-absorbers should not concern any elements of a suspension bracket. At any road situation the hose should be at sufficient distance from adjacent designs.

Carry out reliability control:

· Whether brake hoses are fixed?
· Whether the brake hose in the holder is fixed?
· Whether unions for air removal are tightened?
· Whether enough of brake liquid is filled in?
· On the working engine check tightness. For this purpose press a brake pedal effort of 200-300 N (20-30 kg) during 10 pages. The pedal should not weaken. Check all accessions on tightness.
7. Check work of brake system on the road with not heavy traffic. For this purpose it is necessary to carry out, at least, one strong braking with use of action of ABS (it is felt on a pulsation of a pedal of a brake).

Watch closely transport following you.