Elements of the hydraulic system of the steering mechanism. 4-cylinder engine and 6-cylinder diesel engine
- 1 - Steering gear with hydraulic boost
- 2 - High pressure hydraulic line
- 3 - Drain hose
- 4 - Cover with oil level indicator
- 5 - Bolt, 5 Nm
- 6 - Oil reservoir
- 7 - Rubber support
- 8 - Clamp
- 9 - Return hose
- 10 - Clamp, be sure to replace
- 11 - Bolt, 10 Nm
- 12 - Cooling pipeline
- 13 - Elastic clamp
- 14 - Clamp *
- 15 - Suction hose
- 16 - Clamp *
- 17 - Vane pump 6-cylinder diesel engine
- 18 - O-ring *
- 19 - O-ring *
- 20 - Hollow screw, 47 Nm
- 21 - Vane pump 4-cylinder engine
- 22 - O-ring *
- 23 - O-ring *
- 24 - Hollow screw, 47 Nm
- 25 - Suction hose
- 26 - Clamp
*) Be sure to replace
Steering column
The steering consists of a steering wheel, a steering column, a steering gear in the form of a rack and pinion gear and steering gear rods. The steering column transmits the movements of the steering wheel to the steering mechanism. The gear rack of the steering mechanism moves to the right or left in accordance with the turn of the steering wheel. Tie rods through the hinges and the steering knuckle transmit steering forces to the front wheels.
The rack and pinion steering gear is backlash-free and maintenance-free. As part of the maintenance, only the control of the protective covers and anthers of the tie rod ends is required.
The steering of the car has a hydraulic booster, which reduces the effort applied to the steering wheel. The hydraulic booster contains a hydraulic pump and a working fluid reservoir. A hydraulic pump draws fluid from a reservoir and delivers it at high pressure to a control valve in the steering box. The control valve has a mechanical connection with the steering spindle and directs the fluid, depending on the rotation of the steering wheel, into the corresponding cavity of the working cylinder in the steering gear housing. Here, the fluid acts on the piston and thus supports the control process. At the same time, the piston squeezes the liquid out of the opposite cavity of the working cylinder through the return pipeline into the liquid reservoir.
Welding and straightening works with steering elements are not allowed. Self-locking bolts and nuts, as well as bolts and nuts that are corroded, must be replaced with new ones.
Caution: The tightening torques of the screwed connections must be strictly adhered to.
The driver's airbag is located in the steering wheel. The airbag is a folding air bag that is filled with air in the event of a frontal collision of the vehicle and thus protects the driver's upper body and head. In the event of a frontal collision of the appropriate severity, the control unit sends a signal to the airbag igniter. The explosion produces a gas that inflates the pillow within a few milliseconds. This time is enough to dampen the movement of the forward moving upper body of the driver. Then, within a few seconds, the airbag folds back in as it gases exit the pillow through the holes.
The airbag consists of a collision sensor, a fuse, an airbag control unit and the airbag itself. The signal to inflate the airbag is generated by the control unit.
The vehicle is equipped with an airbag for the driver and front passenger, as well as side airbags, head airbags and seat belt tensioners. Airbag locations are usually labeled «SRS Airbag».
A rear-facing child seat must not be placed on the front passenger seat, except for a special child seat in combination with automatic child seat recognition.
Caution: For safety reasons, it is not allowed to carry out any work on the parts belonging to the airbag and seat belt pretensioner system.
Before working on security systems
1. Disconnect the negative cable (-) battery with the ignition off. The cabin air filter box must first be removed.
Caution: Before disconnecting the cable, find out the security code of the radio, if any, refer to Section Replacing the battery.
2. Insulate the negative terminal (-) battery to prevent accidental contact.
3. Set the wheels straight and the steering wheel in the middle position.
4. Before removing (touch) airbag unit, discharge the electrostatic charge. To do this, briefly touch the lock of the door or body.
5. When connecting the battery, there should be no people inside the car.
General security measures
Never install airbag components of another vehicle or a different steering wheel. When replacing, install only new parts.
Even after a minor accident that did not deploy the airbag, have the airbag system and belt tensioner checked by a workshop.
After the airbag in the steering wheel is deployed, be sure to replace the steering wheel, if the side airbag is deployed, replace the cover in the door lining, if the front passenger airbag is deployed, replace the instrument panel.
The airbag control unit must always be replaced after three deployments.
The airbag can only be checked at a service station. In no case should a test lamp, voltmeter or ohmmeter be used to check the pillow.
Airbag elements that have fallen from a height of more than 0.5 m must be replaced without fail.
Protect airbag components from heat or fire. Do not expose airbag components to temperatures above +100°C.
Protect the airbag from contact with water, grease or oil. If water, grease or oil gets in, clean the pillow immediately.
After removing the airbag, store it with the soft side facing up. When stored back, there is a danger of being thrown upwards if the gas generator is accidentally ignited. This creates a risk of injury.
If work is interrupted, the airbag must not be left unattended.
Do not disassemble the airbag unit. If there is a defect, it will be replaced as a set. Since the pillow contains an explosive, it must be stored securely under supervision.
Airbag components must be disposed of before scrapping the vehicle.
When carrying out any work on the car using electric welding, it is first necessary to disconnect the connector of the airbag control unit with the battery disconnected.
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