Mercedes of the S-class W202

1993-2000 of release

Repair and operation of the car

Mercedes W202
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Lubrication system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. System of ignition
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
- 11. Steering
   11.2. The block of an inflatable safety cushion on a steering wheel
   11.3. Steering wheel
   11.4. Steering trapeze
   11.5. Cuffs of hinges of a steering trapeze
   11.6. Power steering pump
   11.7. Installation of disorder convergence
   11.8. Easily and easy
   11.9. Maintenance of system of steering
   11:10. Diagnostics of malfunctions of system of steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electrical circuitries

11. Steering

11.1. Introduction


Unregulated steering column

1. Steering mechanism
2a. Bolt, 25 N. of m.
71b. Nuts, 8 N. of m.
71c. Sealing cuff
93. Casing
3. Lower steering shaft
A45. Contact payment
S4. The combined switch
S40. Push-button switch of a tempomat

Steering drafts

11. Steering trapeze
11f. Hinges of steering draft
11a. Ball hinges
10g. Tips of levers of a steering trapeze

Steering consists of a steering wheel, a steering shaft, the steering mechanism, steering draft, the steering shock-absorber and the power steering. The steering wheel is screwed on a steering shaft which transfers rotation of a wheel to the steering mechanism.

Depending on the provision of a wheel transfer in the steering mechanism changes. It means that than the turn of a wheel is more, especially indirect is a transfer. The steering wheel at the same time, for example, at the parking, turns easier. Direct transfer on average situation provides the increased accuracy of management, in particular at high speeds.

The hydraulic booster provides small effort on a steering wheel. It consists of the pump, the tank and tubes. The pump soaks up oil for hydraulics from the tank and gives it under pressure to the steering mechanism where the control device and the working cylinder provide the corresponding strengthening.

As the additional equipment the mechanical regulator of length of a steering column for installation of a steering wheel can be put.

While the inflatable safety cushion for the driver is built in a steering wheel, the pillow for the passenger is on the right on the forward panel. At strong front blow the pyro works, and pillows are inflated for thousand fractions of a second. This time is enough to soften front blow for people. For only a few seconds after operation the pillow is blown off as gases come out through openings in it. The inflatable pillow for the passenger is put as the additional equipment.

The firm recommends to replace an inflatable pillow after ten years' operation of the car to guarantee its work.


Самоконтрящиеся nuts are replaced always. Welding and leveling works on steering are inadmissible. At a lack of experience, and also big repairs it is necessary to address in a workshop.

Indications for the address with an inflatable safety cushion

The device cannot be disassembled, at malfunction everything is replaced assembled. As the block contains explosives, store it under the lock or under supervision. Utilization is made by company workshops.

After dismantling you hold the block the soft party up.

The block of a pillow cannot be wiped with water or cleaners.

Do not overheat the block above 100 °C.

The block of a safety cushion is sensitive to blows. If it fell from height of 50 cm, then it cannot already be put on the car.

The block of a safety cushion is allowed to be removed only at the switched-off plug of mass of the accumulator (–) and in position "O" of the ignition key.