Contents: Examination ⬇ Replacement ⬇
Location of the air conditioner fan control unit
1 – control unit; 2 – bracket; 3 – nut; 4, 5 – connecting blocks
Removal the wire and lines from the holder
1 – holder; 2 – return line; 3 – pressure main; 4 – power steering sensor wire
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Connecting pads of the pump unit
1 – pump unit in an elastic casing; 2 – CAN-BUS connection block; 3 – power supply connection block; 4 – connecting block of wires of the power steering sensor
Connecting the main lines to the pumping unit
1 – pump unit in an elastic casing; 2 – nut; 3 – pressure main; 4 – return line; 5 – clamp
Mounting the pump unit on the vehicle
1 – pump unit in an elastic casing; 2 – bracket; 3 – bolts
Pump unit with bracket assembly
1 – nuts; 2 – pumping unit; 3 – bracket; 4 – elastic casing
Pump unit parts
1 – bolt; 2 – nut; 3 – support; 4 – pumping unit; 5 – receiver cover; 6 – pressure main; 7 – sealing ring; 8 – return line; 9 – clamp; 10 – elastic casing; 11 – bracket
The pumping unit consists of a gear pump with an electric motor, a control unit and a receiver.
Attention! The pump unit cannot be repaired; if it malfunctions, it must be replaced as a whole.
Examination
1. Raise the front of the vehicle and support it securely.
2. Remove the left front wheel.
3. Remove the front left wheel arch liner.
4. Start the engine.
5. Check the operation of pump unit 1 by ear and touch (see figure Hydraulic power steering components). If necessary, turn the steering wheel all the way.
6. If the pump unit does not work, check the electrical circuits (see subsection 8.5.6).
7. A more thorough check of the pump can be carried out at a service station using special equipment.
8. Replace the failed pump unit.
9. Install the locking mechanism and wheel in place.
Replacement
1. Disconnect the wire from the "-" terminal of the battery. On some cars there is a battery holder (larger size) closes the receiver cover. In this case, you need to remove the battery and its holder (see subsection 10.2).
2. If necessary, remove the air filter (see subsection 4.1).
3.Unscrew cover 9 (see figureHydraulic power steering components) receiver and through the filler neck using a rubber bulb, remove the working fluid from the receiver.
4. Raise the front of the vehicle and support it securely.
5. Remove the left front wheel.
6. Remove the front left wheel arch liner.
7. Remove the mudguard.
8. On models with an air conditioning fan control unit, disconnect the two connectors 4 and 5 from the unit (see figure Location of the air conditioner fan control unit) with wires, unscrew the two nuts 3 of the fastening and remove bracket 2 with block 1.
9. Press the spring latch and open the holder 1 (see the figure Removing the wire and lines from the holder). Remove the pressure 3 and return 2 lines from it, as well as the wire 4 of the power steering sensor.
10. Place a container under the pump unit to collect any liquid that will flow out of it when removed.
11. Disconnect pads 2 from pump unit 1 (see the figure Connecting pads of the pump unit), 3 and 4 with wires.
12. Loosen clamp 5 with pliers (see the figure Connecting the lines to the pump unit) and carefully disconnect the return line 4 from the pump unit nipple.
13. Unscrew the fastening nut 2 and disconnect the pressure line 3 from the pump unit.
14. Plug the main line openings.
15. Unscrew three bolts 3 (see the figure Mounting the pump unit on the vehicle) fasteners and remove bracket 2 with pump unit 1 in the elastic casing.
16. Unscrew three nuts 1 (see figure Pump unit with bracket assembly) fasteners and remove the pump unit 2 in the elastic casing 4 from the bracket 3.
17. Unfasten the elastic casing 10 (see the figure Pump unit parts) and remove the pump unit 4 from it.
18. Remove three rubber supports 3. Replace supports with torn, peeling or lost elastic rubber.
19. Install the new pump unit in reverse order, replacing the pump unit bracket mounting bolts with new ones.
20. Replace the sealing ring 7 of the pressure line tip.
21. After this, fill the hydraulic system with working fluid and remove air from it (see subsection 8.5.10).
Tightening torques, Nm
| Rubber supports | 7 |
| Nuts for fastening the pump unit to the bracket | 7 |
| Nut for fastening the pressure line to the pump unit | 30 |
| Bolts for fastening the pump unit bracket to the body | 20, then turn 90° |
| Wheel mounting bolts | 120 |