RL V6-3.7L (2009)
Power Steering Pump: Testing and Inspection
Power Steering Pump Pressure Test With T/N 07406-001000A Or T/N 07406-001A101
Power Steering Pump Pressure Test with T/N 07406-001000A or T/N 07406-001A101
Special Tools Required
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P/S joint adapter (pump) 07VAK-P8A011A
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P/S joint adapter plate (pump) 07VAK-P8A012B
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P/S joint adapter (hose) 07RAK-S040122
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P/S pressure gauge 07406-001000A or 07406-001A101
Check the fluid pressure as follows to determine whether the trouble is in the pump or the steering gearbox.
1. Remove the right upper fender trim (A).
2. Check the power steering fluid level. See: Power Steering Fluid/Testing and Inspection
3. Disconnect the pump outlet hose (A) from the pump outlet with care so as not to spill the power steering fluid on the frame and other parts, then
install the P/S joint adapter (pump) on the pump outlet (B) with the P/S joint outlet plate.
4. Connect the P/S joint adapter (hose) to the P/S pressure gauge, then connect the pump outlet hose to the P/S joint adapter (hose).
5. Install the P/S pressure gauge to the P/S joint adapter (pump).
6. Open the shut-off valve (A) fully.
7. Start the engine, and let it idle.
8. Turn the steering wheel from lock-to-lock several times to warm the fluid to operating temperature.
9. Measure steady-state fluid pressure while the engine is idling. If the pump is in good condition, the gauge should read no more than 1,470 kPa (15
kgf/cm2, 213 psi).
If it reads high, check for:
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Clogged or deformed feed or return lines between the pump and the gearbox.
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Clogged valve body unit.
10. Let the engine idle, and gradually close the shut-off valve and immediately read the pressure.
Do not keep the shut-off valve closed for more than 5 seconds or the pump could be damaged by over-heating.
