Fluid Pressure Inspection

Fluid pressure Inspection





1. Set the SSTs so that the valve of the SST faces toward the gear housing side as shown in the figure.





2. Disconnect the oil pump side joint of the pressure hose, connect the SM set in the Step 1.

Tightening torque
29.4-44.1 Nm (3.00-4.49 kgf-m, 21.6-32.5 ft. lbs.)

3. Bleed the air from the system.
4. Open the gauge valve fully.
5. Start the engine, turn the steering wheel to the left and right to raise the power steering fluid to the appropriate temperature (50-60 °C (122-140 °F)).





6. Close the gauge valve completely
7. Increase the engine speed to 1,000-1,500 rpm and measure the fluid pressure generated at the oil pump. If it is less than the specification, replace the oil pump as a single unit.

Caution: Do not maintain the gauge valve fully closed for 5 s or more. It IS Possible that oil temperature can rise and this will negatively affect the oil pump.

Oil pump fluid pressure oil temperature 50-60 °C (122-140 °F)
10.4-11.0 kPa (107-112 kgf/cm2, 1,509-1,595 psi)





8. Open the gauge valve fully and increase the engine speed to 1,000-1,500 rpm.
9. Turn the steering wheel fully to the left and right, then measure the fluid pressure generated at the gear housing.

Caution: Do not maintain the steering wheel fully turned for 5 s or more. It is possible that oil temperature can rise and this will negatively affect the oil pump.

Note: If the fluid pressure is less than the specification, it is possible that the oil pump or gear housing is not operating correctly.

Gear housing fluid pressure oil temperature 50-60 °C (122-140 °F)
9.0-11.0 kPa (92-111 kgf/cm2, 1,306-1,585 psi)

10. After removing the SSTs, tighten the oil pump side joint of the pressure hose to the specified torque.

Tightening torque
29.4-44.1 Nm (3.00-4.49 kgf-m, 21.6-32.5 ft. lbs.)

11. Bleed the air from the system.