Fluid Pressure Inspection

1. Assemble the Special Service Tools (SST) as shown in the illustration and tighten connections to 40 - 49 Nm (20 - 36 ft. lbs.).





2. Mark both hose connections to ensure that the hose is reinstalled in its original position.
3. Disconnect the pressure hose from the oil pump. Attach the SST (adapters).
4. Connect the SST (gauge set) to the SST (adapters).
5. Bleed the air from the system.





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

CAUTION: Do not let the valve stay closed for more than five seconds. The increase in fluid temperature will damage the oil pump.





7. Close the gauge valve completely. Increase the engine speed to 1,000 - 1,500 rpm and measure the fluid pressure generated by the oil pump. If the pressure is not within 8,340 - 8,820 kPa (1,210 - 1,280 psi), replace the oil pump assembly.





8. Open the gauge valve fully and increase the engine speed to 1,000 - 1,500 rpm.

CAUTION: Do not let the valve stay closed for more than five seconds. The increase in fluid temperature will damage the oil pump.





9. Turn the steering wheel fully left and right and measure the fluid pressure generated within the gear housing. If the pressure is not within 8,340 - 8,820 kPa (1,210 - 1,280 psi), repair or replace the steering gear assembly.
10. Remove the gauge set. Install and tighten the pressure hose to 30 - 39 Nm (22 - 28 ft. lbs.).
11. Bleed the air from the system.