Power Steering Pump: Testing and Inspection

Oil pump relief pressure test
1. Disconnect the pressure tube from the power steering pump and then install the special tools between the pump and the pressure tube as illustration below.




2. Start the engine and turn the steering wheel several times so that the fluid temperature can rise to approx. 50 - 60 C (122 F).
3. Set the engine speed to approx. 1000rpm.
4. Close the shut-off valve of the special tools and measure the fluid pressure.

Relief pressure:
85 - 90kgf/cm2 (1209 - 1280psi, 8.3 - 8.8Mpa)

CAUTION:
Do not keep the shut-off valve on the pressure gauge closed for longer than 10 seconds.

5. Remove the special tools, and then connect the pressure tube to the pump by tightening the eye bolt.
6. Bleed the power steering system.