Mercedes S-Class W-140

In 1991-1999 editions

Repair and enterprise of the car



Mercedes S-Class
+ Mercedes Benz cars of the class S (W-140)
+ operation manual
+ Routine maintenance
+ motor
+ cooling systems, heating
+ systems of power supply and edition
+ electric equipment of the motor
+ gear shifting boxes
+ Awtomatitscheckaja transmission
+ Connection
- Brake system
   Specifications
   Arrangement of the antiprobuksowotschnoj components of the ASR/ETS system
   Arrangement of components of the Extrabremsens (BAS) amplifier
   Arrangement of components of the ESP system
   Discussion and installation of the main brake cylinder (GTZ) as "tandem" (model 140.028/032/033/135)
   Removal, device and check of serviceability of functioning of Servoantriebes of the amplifier of vacuum of brakes
   Removal and device of brake support
   Check of thickness of Bremsdisk and overlays of Bremsleistens
   Removal and Leistens stojanotschnogo device of a brake
   Removal and device of a forward rope of an incentive stojanotschnogo of a brake
   Regulation of stojanotschnogo of a brake
   Wheel sensors the antiblocking device - a device detail
+ Aufhängung and management
+ body
+ electric onboard equipment



Brake system

General information and precautionary measures

General information

The hydraulic brake system exists from the main brake cylinder, the amplifier of a brake and brakes of glasses of halls and back wheels. The brake system has 2 contours. The contour influences forward brakes, another - on for. At refusal one of contours, for example, owing to Ausfließens of liquid brakes of the car of other contour are carried out. Liquid pressure in both contours arises from the double main brake cylinder which is considered from a foot brake.

The description of work of systems of anti-blocking of brakes the antiblocking device, the Extrabremsens BAS amplifier and the electronic program of stabilization of immunity (system protiwosanosnoj) is provided in office the operation manual.

The container with brake fluid is under the main brake cylinder, it supplies all hydro-brake mechanism with liquid.

The amplifier of a brake accumulates a part of vacuum which is created in the absorbed motor pipeline. As at the diesel engine necessary vacuum on absorption is absent, cars by means of the diesel engine have a special vacuum pump. By means of the corresponding gate if the effort on a foot brake thanks to effect of vacuum increases it is necessary.

stojanotschnyj a brake with pedalnym from an incentive influences a rope brakes of back wheels. As as brake stojanotschnogo the brake of glasses does not work, drum brakes which are established in brakes of glasses are in addition defined on back wheels. Drum brakes are put only by a brake stojanotschnogo pedal in the enterprise.

Precautionary measures

When cleaning the brake system dust takes itself which can give damage of health of the person therefore, brake dust inhale it cannot do.

Work with the brake system requires special purity and exact attention of instructions. In the absence of necessary experience it is expedient to address on 100.

At the movement after wet roads it is necessary to press a foot brake for removal of humidity from Disks of brakes periodically.


During Drehens of a wheel humidity faces under the influence of centrifugal force of Bremsdisks, but there are the movie of silicone, rubber istiranija products which lubricants and other pollution which reduce efficiency of brakes.
After the structure of new Bremsleistens the last prirabotatsja have to go. Therefore it is not necessary to brake it is in vain strongly necessary the first 200 km of the movement.

The brake mechanisms of glasses damaged by corrosion create effect of jolting which does not vanish over time at a brake. In this case it is necessary to replace Bremsdisks.

To Bremsleistens surface also lead rain flutes ignition of dirt to formation of furrows on Bremsdisks surface that leads to immersion of efficiency of Bremsens.