Hydraulic System Pressure
- Connect a pressure gauge/valve between steering pump pressure hose and steering gear. Tighten fittings to 29-36 ft. lbs. (39-49 N.m). See Fig 1 . Place a thermometer in pump reservoir. Ensure valve is in "OPEN" position. Bleed air from system by starting engine and slowly turning steering wheel lock-to-lock, 10 times.
- Turn steering wheel lock-to-lock to increase fluid temperature. Test temperature of fluid should be 122-140°F (50-60°C). To measure fluid pressure, completely close the gauge valve and increase engine speed to 1000-1500 RPM.
- Read pressure and open valve. Pump pressure should be at least 924 psi (70 kg/cm2
). If pump pressure is not to specification, repair or replace pressure pump.CAUTION: Leaving gauge valve closed for more than 15 seconds can damage the pump.
- To measure steering gear fluid pressure, open the gauge valve completely. Increase engine speed to 1000-1500 RPM. Turn steering wheel from lock-to-lock.
- Do not keep steering wheel fully turned for more than 10 seconds. The correct steering gear fluid pressure is 924 psi (70 kg/cm2 ) at a temperature of 122-140°F (50-60°C). If less than specification, repair or replace steering gear.