Disassembly

Important: The power steering pump pulley, the power steering pump shaft, and the power steering pump seals can be serviced. If any other internal parts of the power steering pump are found to be defective, replace the power steering pump.

Notice: Use caution not to overtighten the vise. The power steering pump housing can distort if excessive pressure is exerted on its exterior.





1. Mount the power steering pump assembly in a soft jaw vise.
2. Remove the following components from the pump body:
- The 2 bolts
- The inlet pipe (2)
- The O-ring
3. Remove the pressure sensor (1) from the pump body (4).
4. Remove the following components from the pump body (4):
- The high pressure line connector (13)
- The O-rings
- The relief valve (12)
- The spring (11)
5. Remove the following components from the pump body (4):
- The 4 bolts
- The pump cover (7)
- The O-ring
6. Remove the cam ring (8) from the pump body (4).
7. Remove the rotor vane plates from the rotor (9).
8. Remove the snap ring from the pump shaft.
9. Remove the rotor (9) from the pump body (4).
10. Remove the pulley and the pump shaft (15) from the pump body (4).
11. Remove the side plate (10) and the O-rings from the pump body (4).
12. Use a flat-bladed tool in order to remove the pump shaft oil seal (14) from the pump body (4).
13. Clean all of the power steering pump components. Dry the components thoroughly.





14. Inspect the following items for excessive abrasion or damage. If you find any damage, replace the pump assembly. Refer to Power Steering Pump Replacement.
- The pump body
- The cover
- The side plate
- The shaft





15. Inspect the cam ring for excessive abrasion and damage.
If you find any damage, replace the pump assembly, Refer to Power Steering Pump Replacement.





16. Inspect the rotor and vanes for excessive abrasion or damage. If you find any damage, replace the pump assembly. Refer to Power Steering Pump Replacement.





17. Inspect the relief valve fluid passage for obstructions. Inspect the sliding surfaces for excessive abrasion and damage. If you find any damage, replace the pump assembly. Refer to Power Steering Pump Replacement.





18. Measure the rotor and the vane plate clearance using a feeler gauge (1).
The maximum rotor vane plate clearance is 0.06 mm (0.0023 inch). If the rotor vane is greater than the specified value, replace the pump assembly. Refer to Power Steering Pump Replacement.





19. Measure the free length of the relief spring (1) using the dial calipers.
The free length of the spring should fall within 33.5 mm-36.5 mm (1.43 - 1.32 inch). If the valve spring does not fall within the specification, replace the pump assembly. Refer to Power Steering Pump Replacement.