Power steering pump.
1 - pump drive shaft pulley, 2 - retaining ring, 3 - boot, 4 - pump drive shaft assembly with bearing, 5 - oil seal, 6 - pump housing, 7 - working fluid pressure sensor with sealing ring, 8 - spool, 9 - return hose fitting, 10 - sealing ring, 11 - bypass bolt, 12 - pressure pipe fitting with sealing ring, 13 - working fluid flow regulator, 14 - regulator spring, 15 - spring, 16 - inner sealing ring, 17 - outer sealing ring, 18 - rear disc, 19 - vane, 20 - rotor, 21 - dowel pin, 22 - stator ring, 23 - gasket, 24 - pump housing cover.
Withdrawal
1. Turn away a bypass bolt and disconnect the delivery pipeline from the union.
- Tightening torque: 55-65 Nm
2. Disconnect the return hose from the nozzle and drain the working fluid into a special container.
Note: Avoid getting working fluid on the generator casing.
3. (Models with 2.7L engine) Remove the accessory drive belt.
4. (Models with 2.0 and 2.4 L engines) Loosen the adjusting bolt and remove the accessory drive belt.
5. Disconnect the fluid pressure sensor connector.
6. Turn away bolts of fastening of the pump and remove the pump of the amplifier of a steering in gathering.
- Tightening torque: 39-60 Nm
Disassembly
1. Remove two bolts and return hose fitting and O-ring.
- Tightening torque: 13.6-18.4 Nm
2. Remove the four bolts and remove the pump housing cover and gasket.
- Tightening torque: 21-29 Nm
Note: Do not reuse gasket.
3. Remove the dowel pins and remove the cam ring.
4. Remove the vaned rotor and rear disc from the pump housing.
5. Remove the outer and inner o-rings and remove the spring.
Note: Install new O-rings when assembling the pump.
6. Remove the pump shaft pulley.
- A) Loosen the pulley nut and spring washer.
- Tightening torque: 55-70 Nm
- b) Remove the pulley and key.
7. Using the special tool, remove the circlip.
8. Remove pump drive shaft complete with bearing.
Note: Use a plastic-headed hammer if necessary.
9. Remove the stuffing box from the pump housing.
Note: do not reuse the seal.
10. Unscrew the fitting of the discharge pipeline, remove the working fluid flow regulator and spring from the pump housing.
- Tightening torque: 70-80 Nm
Note: Do not disassemble the fluid flow regulator.
11. Remove the o-ring from the fitting.
12. Remove the fluid pressure sensor.
13. Remove the spool with spring from the pump housing.
14. Remove the O-ring from the fluid pressure sensor.
Examination
1. Clean all removed parts with a suitable cleaning solution.
2. Check for damage to the internal components of the pump. If damage is found, replace the pump assembly.
3. Check for cracks or deformations in the pump drive shaft pulley. If defects are found, replace the pulley.
4. Check that there are no fluid leaks through the pump drive shaft seal. Replace seal if necessary.
5. Check splines on pulley and pump drive shaft for excessive wear and damage. Replace worn or damaged parts as necessary.
Assembly
1. Assemble the power steering pump in the reverse order of disassembly, the tightening torques of the bolts are indicated in the description of the disassembly procedure and in the assembly drawing 'Power steering pump".
2. When assembling, lubricate all parts of the pump with working fluid.
Installation
1. Install the power steering pump in the reverse order of removal, the bolt torques are indicated in the removal procedure and in the assembly drawing "Power steering pump".
2. When installing, position the hoses so that they are not twisted and do not come into contact with vehicle components.
3. After installation:
- bleed the power steering system (see chapter "Maintenance and general inspection and adjustment procedures");
- check fluid pressure (see section "Fluid Pressure Check").