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ON-VEHICLE SERVICE POWER STEERING 37-11 OIL PUMP PRESSURE TEST M1372002300296 1. Disconnect the pressure hose from the oil pump, and then connect the following special tools. MB990662: Power Steering Oil Pressure Gauge MB991548: Power Steering Oil Pressure Gauge MB991549: Power Steering Oil Pressure Gauge 2. Bleed air, then turn the steering wheel several times while the vehicle is not moving so that the - 60 C. 3. Start the engine and idle it at 750 100 r/min. CAUTION The pressure gauge shut-off valve must not gauge and measure the oil pump relief pressure Standard value: 8.8 - 9.5 MPa 5. If it is not within the standard value, replace the oil pump. 6. Check whether or not the hydraulic pressure is the standard value when no-load conditions are Standard value: 0.8 - 1.0 MPa 7. If it is not within the standard value, the probable cause is a malfunction of the oil line or steering 8. Turn the steering wheel all the way to the left or right; then check whether or not the retention Standard value: 8.8 - 9.5 MPa 9. If not the standard value, overhaul the steering gear. Remeasure fluid pressure. 10. Remove the special tools, and then tighten the pressure hose to the specified torque. Tightening torque: 57 7 N ¼ m 11. Bleed the system (Refer to POWER STEERING PRESSURE SWITCH M1372007200302 1. Disconnect the pressure hose from the oil pump, and then connect the following special tools. MB990662: Power Steering Oil Pressure Gauge MB991548: Power Steering Oil Pressure Gauge MB991549: Power Steering Oil Pressure Gauge 2. Bleed air, and then turn the steering wheel several times while the vehicle is not moving so that the - 60 C. 3. The engine should be idling. ACX01133 Temperature Oil reservoir Adapter Oil Adapter AB Shut-off valve Pressure |