Pressure Test
NOTE:
Before testing power steering system, check fluid level, belt tension, pump pulley, tire pressure and engine idle speed.
- Remove high pressure line from power steering pump. Attach a spare pressure hose to pump. Connect Power Steering Pressure Tester (J-5176-D) to hose. Open valve fully.
- Run engine until fluid reaches normal operating temperature. Check fluid level and add as necessary. With engine at operating temperature, idle pressure reading should not be higher than specified in PRESSURE TEST SPECIFICATIONS . If pressure is more than 200 psi (14 kg/cm2 ), inspect system for restrictions or faulty flow control valve.
- Alternately close and open gauge valve fully 3 times while recording highest pressure obtained. Each relief measurement should be at least as high as specified in PRESSURE TEST SPECIFICATIONS .
- If recorded pressures are all within 50 psi (3.5 kg/cm2 ), pump is okay. If pressures are within specifications but not within 50 psi (3.5 kg/cm2 ) of each other, flow control valve is sticking. If relief pressure readings are less than specifications, replace flow control valve and retest pump pressure.
- If pump meets specifications, leave valve open. Turn steering wheel from stop to stop. Record and compare highest pressure obtained with maximum pump pressure measured in step 3). If pressure at both stops is not equal to maximum pressure, steering gear is leaking internally.
CAUTION:
To prevent pump damage, DO NOT
hold valve closed for more than 5 seconds in step 3).