S-class W202 Mercedes
1993-2000 of release
Repair and car operation
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
+ 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. Disorder convergence installation
11.8. Easily and easy
11.9. Maintenance of system of a steering
11.10. Diagnostics of malfunctions of system of a steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electroschemes
As a rule, the steering mechanism with the hydraulic booster possesses high reliability and does not demand difficult service at car operation. Even in default the pump of the amplifier, movement on the car can be continued, though for a povorachivaniye of a steering wheel in this case it is required to put much more efforts, than even on the car without the hydraulic booster.
The reason of complete failure of the hydraulic booster is break of a driving belt of the pump more often. Regularly check a belt condition – it can be worn-out or poorly tense. One of signs of a weak tension of a belt is emergence of return (a return push) on a steering wheel. Usually it is most appreciable at a car troganiye from a place when wheels are turned to the full.
Support at the proper level amount of liquid in a tank of the amplifier. If necessary add liquid only specified in the guide to brand service. Consider that the liquid intended for AKPP, it is possible to use not for all hydraulic boosters of a steering. On sale there are many different brands of liquids. Improper liquid can spoil all epiploons in system.
As liquid is used not only as a working body of hydrosystem but also as lubricant, it is very important that its level did not fall below norm, differently the pump can fail. Watch also purity of liquid. The dirty or delayed liquid quickly will destroy the pump and the consolidations of hydrosystem located on the reechny mechanism that will demand then expensive repair. Replacement of liquid is required seldom. If you want to merge liquid, it is necessary to open a cover of a broad tank, to disconnect one of pipelines of system and several times to turn a steering wheel here and there for liquid expression from hydrosystem. The special opening for liquid plum usually is absent. Filling of new liquid is made through a broad tank. As a rule, thus in hydrosystem the air jams breaking its working capacity are formed. It is necessary to remove them. It is simplest to make it as follows. Start the engine, open a cover of a broad tank and pump over system, turning a wheel several times from one extreme situation in another. In process of a hydrosystem prokachivaniye liquid level in a tank will go down. Repeat this procedure until it is not stabilized. After that add liquid to demanded level and close a cover, previously having checked, whether the ventilating opening (if it is available) is littered in it.
The most frequent malfunction of hydraulic boosters is the liquid leak. With such defect cars usually do not manage to pass checkup. At some old hydrosystems small infiltration of liquid via bearings, shaft, etc. as they cannot be made completely tight was allowed. Regularly examine system knots from all directions for timely detection of possible podtekaniye from pipelines and unions, and also from not hardly fixed pipelines and other details.
Find out, whether tubes and hoses rub against a chassis and suspension bracket detail. Malfunction of a hydrowire can lead to liquid break through covers. Making check, turn a steering wheel from one extreme situation in another. It is often possible to eliminate small leaks, having entered into liquid special pressurizing additives which are available on sale. However it will be only a short-term measure. In case of malfunction of the pump it can be repaired, having used a repair kit of new epiploons. Replacement of epiploons a little that will correct, if the pump is strongly worn-out.
For those who likes to do everything independently, repair of the pump will not present great difficulties. However before establishing the repaired pump on the car, it is desirable to check it at the stand. If you suspect that the pump is worn-out, address to the expert in hydraulic boosters that it checked his working pressure and correctly defined malfunction. Generally speaking, numerous advantages of a wheel with the hydraulic booster many times over outweigh the problems created by its possible malfunctions. Costs after you did a bit of traveling on the car with modern system, to change on the car which does not have the hydraulic booster of steering system, and you immediately "will feel a difference".