Fluid Pressure Check

1. Assemble the Special Service Tool (SST) (or equivalent) as shown in the figure, and tighten its fittings.
Tightening torque: 29-36 ft. lbs. (39-49 Nm)





2. Disconnect the high-pressure hose from the pump, and connect the SST (or equivalent) between the hose and the pump.

NOTICE: Before disconnecting the hose, place marks at the connections for proper reinstallation.

3. Bleed the air from the system. Service and Repair

4. Open the gauge valve fully. Start the engine and turn the steering wheel fully left and right to raise the fluid temperature to 122-140° F (50-60° C).





NOTICE: If the valve is left closed for more than 15 seconds, the fluid temperature will increase excessively and damage the oil pump.

5. Close the gauge valve completely. increase the engine speed to 1,000-1,500 rpm and measure the fluid pressure generated by the power steering pump. If the pressure is below specification, replace the power steering pump assembly.
Power steering pump fluid pressure: 1,067 psi (7,358 kPa)





6. Open the gauge valve fully and again increase the engine speed to 1,000-1,500 rpm.
7. Turn the steering wheel fully to the left and right and measure the fluid pressure generated by the gear housing. If the pressure is below specifications, replace the gear housing assembly.
Gear housing fluid pressure: 1,067 psi (7,358 kPa)

NOTICE: If the steering wheel is kept in the fully fumed position for more than 15 seconds, the fluid temperature will rise excessively.

8. Remove the SST (gauge set). Replace and tighten the high-pressure hose. Tighten to the specified torque.
Tightening torque: 12-17 ft. lbs. (16-24 Nm)
9. Bleed the air from the system. Service and Repair