FLOW AND PRESSURE TEST - FLOW FROM HYDRAULIC FAN MOTOR TO STEERING GEAR (should be done if necessary after the Pump flow test)
WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the pressure gauge hose from the Power Steering Analyzer to Fitting 8630-1.
- Connect Adapter 8630-4 to Power Steering Analyzer test valve end.
- Disconnect the high pressure hose from the power steering gear.
- Connect Fitting 8630-1 to the high pressure hose.
- Connect Adapter 8630-4 to the power steering gear.
- Open the test valve completely.
- Start engine and let idle long enough to circulate power steering fluid through the flow/pressure test gauge.
- Shut off the engine and check the fluid level, add fluid ass necessary. Start engine again and let idle.
- The initial pressure reading should be 345-552 kPa (50-80 psi). If pressure is higher inspect the hoses for restrictions and repair as necessary.
- Increase the engine speed to 1500 RPM and read the flow meter. The reading should be 2.4 - 2.8 GPM if the reading is below this specification the fan should be replaced. CAUTION: This next step involves testing maximum fan motor steering relief pressure. Do not leave the valve closed for more than three seconds.
- Close the valve fully three times for three seconds and record highest pressures indicated each time. All three readings must be at fan motor steering relief pressures.
- Open the test valve and turn the steering wheel to the extreme left and right positions against the stops. Record the highest pressure readings at each position. If pressure readings are not within 50 psi from each other, the gear is leaking internally and must be repaired.
PUMP SPECIFICATIONS
| ENGINE | RELIEF PRESSURE +/- 50 | FLOW RATE (GPM) |
|---|---|---|
| 5.7L | 1241 kPa (1800 psi) | 1500 RPM 2.9 - 3.3 GPM Minimum @ 200 psi |