Skoda Fabia

since 2000 release

Repair and operation of the car



Skoda Fabia
+ 1.1. Description of the car
+ 2. Engine
+ 3. Lubrication system
+ 4. Power supply system
+ 5. Cooling system
+ 6. System of production of the fulfilled gases
+ 7. Transmission and running gear
- 8. Steering
   8.1. Removal and installation of a steering wheel
   8.2. Removal and installation of returnable and contact rings assembled
   + 8.3. Steering column
   + 8.4. The steering mechanism (without amplifier)
   - 8.5. The steering mechanism (with the amplifier)
      8.5.1. Replacement of a tip of steering draft
      8.5.2. Removal of the steering mechanism
      8.5.3. Installation of the steering mechanism
      8.5.4. Replacement of steering draft
      8.5.5. Pump unit
      8.5.6. Check of electric chains of the amplifier of steering
      8.5.7. Replacement of the sensor of the amplifier of steering
      8.5.8. Replacement of highways of system of the amplifier of steering
      8.5.9. Check of level of working liquid
      8.5.10. Filling and removal of air from hydraulic system
      8.5.11. Check and adjustment of angles of installation of wheels
+ 9. Brake system
+ 10. Electric equipment
+ 11. Body
+ 12. Electrical circuitries



8.5. The steering mechanism (with the amplifier)

GENERAL INFORMATION

The scheme of steering with the EPHS amplifier (Electrically Powered Hydraulic Steering)

1 – case of the steering mechanism;
2 – sensor of the amplifier of steering;
3 – steering column;
4 – control unit of a combination of devices;
5 – speed sensor;
6 – control unit of the engine;
7 – a control lamp of steering with the amplifier;
8 – pressure head highway;
9 – returnable highway;
10 – control unit of a safety cushion;
11 – pump unit;
and – a signal on a control lamp of steering with the amplifier;
– a signal of frequency of rotation of a bent shaft;
in – a car speed signal;
– a signal of frequency of rotation of a steering wheel;
д – signal from the control unit of a safety cushion;
е – contact 30;
– contact 15;
з – "weight"

The amplifier is equipped with the gear pump with the drive from the electric motor. A receiver with valves, the pump and the electric motor form the pump unit. The control unit of the amplifier on the basis of the speed of turn of a steering wheel, speed of the movement of the car and frequency of rotation of a bent shaft regulates the volume of the given liquid in system due to change of frequency of rotation of a shaft of the electric motor of the drive of the pump.

Protection of turning on of the pump unit in case of malfunction of elements of the amplifier, onboard network of the car, an overheat of the pump unit or the road accident is provided. After operation of protection as a result of an overheat of the pump unit it can be disconnected, having switched off ignition and having repeatedly launched the engine in 15–20 min. (that the pump unit cooled down).

In other cases protection needs to be turned off, having cleared contents of memory of malfunctions (at service station).


Prevention

The steering mechanism is not subject to repair, in case of malfunction it needs to be replaced assembled. When replacing the steering mechanism disconnect from it steering drafts (see subsection 8.5.4).