Procedure

1. Loosen power steering hose bracket at rear of engine.
2. Disconnect the power steering pressure hose from the power steering pump and connect it into the appropriate hose adapter of the Power Steering System Analyzer 211-F001 or equivalent. Use Fitting 211-D019 or equivalent.
3. Thread the other analyzer adapter into power steering pump. Thread the adapter into the rack and pinion steering gear.
4. Connect analyzer hoses to adapters. Tighten both connections to 20 Nm (14 ft. lbs.) maximum.
5. Add power steering fluid to the oil reservoir. Start the engine and run it for approximately two minutes at idle.
6. Record the following:
a. Flow: liters/min (gallons/min) at 78° ± 2°C (172° ± 5°F).
b. Pressure: kPa (psi) at 78° ± 2°C (172° • 5°F) at idle with the gate valve fully open.
^ If flow is below 3.4 liters/min (0.9 gallons/min), the power steering pump may require replacement. However, at this point, continue the diagnosis. Check flow and relief pressure against the specifications for the model power steering pump being tested.
^ If pressure is above 1034 kPa (150 psi), check hoses for restrictions.

7. Partially close the gate valve to build up 5100 kPa (740 psi). Observe and record flow. Flow should be liters/min (gallons/min) at 78° ± 2°C (172° ± 5°F).
If flow drops to a level lower than 3.4 liters/min (0.9 gallons/min), replace the power steering pump.
8. Completely close and partially open gate valve three times. (Do not allow valve to remain closed for more than five seconds.) Observe and record pressure, kPa (psi).
Refer to Power Steering Pump Specifications for the applicable power steering pump model and vehicle application. If pressure recorded is lower than minimum specification, replace power steering pump.
If the pressure recorded is above maximum specification listed, the power steering pump should be removed and cleaned or replaced.
9. Increase engine speed from idle to approximately 1500 rpm. Observe and record flow, liters/min (gallons/min).
If flow exceeds the maximum free flow specified, the power steering pump should be replaced.
10. With the engine at idle, turn (or have an assistant turn) steering wheel to the left and right stops. Record pressure and flow at stops.
Pressure developed at both stops should be nearly the same as maximum power steering pump output pressure.
At the same time, flow should drop below 1.9 liters/min (0.5 gallon/min). If the pressure does not reach maximum output or the flow does not drop below 1.9 liters/min (0.5 gallon/min), excessive internal leakage is occurring. Replace power steering short rack.
11. Turn (or have an assistant turn) steering wheel slightly in both directions and release quickly while watching the pressure gauge. The needle should move from the normal back pressure reading and snap back as the steering wheel is released. If it comes back slowly or sticks, the rotary valve in power steering short rack is sticking or the column is binding. Check the steering column before replacing the power steering short rack.

NOTE: If concern still exists, check front suspension lower arm ball joint and steering linkage. Refer to Steering System Diagnosis Symptom Chart.

12. Flush the power steering system. Also, flush power steering hoses and power steering pump before replacing power steering short rack.
13. Disconnect and remove analyzer and connect lines.
14. Secure power steering hose bracket at engine.