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12.3. Check of steering with the hydraulic amplifier

Check of effort of turn of a steering wheel

PERFORMANCE ORDER
1. On the car standing on a firm horizontal surface establish forward wheels for the rectilinear movement.
2. Launch the engine and warm up liquid of the amplifier of steering up to the temperature of 50 ~ 60 °C. Turn a steering wheel from an emphasis against the stop several times.
3. Leave the engine to work at the frequency of rotation of idling and hook on a dynamometer for a spoke of a steering wheel in the place the most remote from the center of a wheel. With the forward wheels established for the rectilinear movement measure effort which needs to be put to a steering wheel for turn of wheels to the left and to the right.

Effort: 31 N (3,2 kg)

4. If the measured effort exceeds the required value, check the liquid level, lack of air in liquids, lack of leaks in hoses and their connections, operation of the pump of the amplifier of steering and steering transfer, and pressure in tires of forward wheels.

Check of level of liquid


Prevention

Add to the hydraulic drive of the amplifier of steering only the recommended liquid.


PERFORMANCE ORDER
1. Check that the level of liquid is between FULL tags (full) and LOW (low) being on the case of a transparent tank.
2. If necessary, add or pump out liquid from a tank.

Pumping of hydraulic system of the amplifier of steering


Prevention

Do not launch the engine. Lift a forward part of the car and fix on support.


PERFORMANCE ORDER
1. Check liquid level.
2. At the idle engine turn a steering wheel from an emphasis against the stop several times.
3. Check liquid level. If the level of liquid went down, add liquid.
4. Repeat steps 2 and 3 while the level of liquid is not stabilized.
5. Launch the engine and leave to work at idling rotation frequency
6. Turn a steering wheel from an emphasis against the stop several times.
7. Check that liquid does not foam, and its level did not go down.
8. If necessary, add liquid and repeat steps 6 and 7.

Check of lack of leak of liquid

PERFORMANCE ORDER
1. Launch the engine.
2. Turn a steering wheel from an emphasis against the stop several times to create pressure in hydraulic system of the amplifier of steering.
3. Check of lack of leak of liquid from hydraulic system of the amplifier of steering.

Prevention

To exclude damages, do not hold the steering wheel turned against the stop within more than 15 seconds. Leak of liquid is most possible in junctions of hoses and tubes, and also in places of their connection to a tank and steering transfer.


Check of pressure of liquid in hydraulic system

PERFORMANCE ORDER
1. Collect the device for measurement of pressure of OK201 323 AA0 as shown in the drawing.

Inhaling moment: 39–49 N • m

2. Disconnect a pressure head hose from the pump and connect the device for measurement of pressure of OK201 323 AA0 between a hose and the pump.

Prevention

Before a hose detachment, put tags for its correct repeated installation.


3. Remove air from hydraulic system of the amplifier of steering.
4. Completely open the valve of the OK201 323 AA0 device. Launch the engine and turn a steering wheel from an emphasis against the stop several times for warming up of liquid of the amplifier of steering up to the temperature of 50 ~ 60 °C

Prevention

If the valve to leave closed within more than 15 seconds, temperature of liquid will increase excessively and will damage the oil pump.


5. Completely close the valve. Increase the frequency of rotation of the engine up to 1000-1500 min.-1 and measure the liquid pressure created by the pump. If pressure is lower than demanded, replace the pump of the amplifier of steering.

The liquid pressure created by the pump of the amplifier of steering: 7358–7848 kPa

6. Completely open the valve and increase the frequency of rotation of the engine up to 1000–1500 min.-1.
7. Turn a steering wheel from an emphasis against the stop several times and measure the liquid pressure created by pump gear wheels. If pressure is lower than demanded, replace the pump of the amplifier of steering.

The liquid pressure created by gear wheels of the pump of the amplifier: 7358–7848 kPa


Prevention

If to leave in the situation turned against the stop within more than 15 seconds, temperature of liquid will increase excessively and will damage the oil pump.


8. Remove the device for measurement of pressure of OK201 323 AA0. Establish into place and fix a pressure head hose. Delay connection of a hose the required moment.

Inhaling moment: 39–49 N • m

9. Remove air from hydraulic system of the amplifier of steering.