Pressure Testing
- Remove high pressure line from pump. Attach Adapter Fitting (J-5176-11) to pump. See Fig 1 .
- Using Pressure Gauge (J-5176-02) and Adapter (J-5176-12), connect gauge to hose.
- Open valve fully. Run engine until fluid reaches normal operating temperature. Check fluid level. Add if necessary. With engine at operating temperature, pressure reading should be 80-125 psi (5.6-8.8 kg/cm2 ).
- If pressure is more than 200 psi (14 kg/cm2
), inspect system for restrictions or faulty poppet valve. Alternately close and then open gauge valve fully 3 times while recording highest pressure obtained.CAUTION: DO NOT hold valve closed for more than 5 seconds as pump damage may result.
- If recorded pressures are all within 50 psi (3.5 kg/cm2 ), pump performance is acceptable. If pressures are high and not within 50 psi (3.5 kg/cm2 )) of each other, flow control valve is sticking.
- If pressures are constant and more than 100 psi (7.0 kg/cm2 ), but less than 1350 psi (94.9 kg/cm2 ), replace flow control valve. Retest pump pressure.
- If pump meets specification, leave valve open. Turn steering wheel from stop to stop. Record and compare highest pressure with maximum pump pressure.
- If pressure at both stops is not similar to maximum pressure, steering gear is leaking internally. Shut off engine, remove testing equipment, check fluid level, or make necessary repairs.
NOTE:
Alternative method of testing system pressure and measuring rate flow can be performed using Power Steering Analyzer (J-25323), using instructions with analyzer.