Idle Pressure Test
- Remove high pressure hose at steering pump and connect spare hose to pump fitting. Connect Pressure/Flow Tester (C-6815) to both hoses using adapter fittings. Connect spare pressure hose to gear or pump. See Fig 1 .
- Fully open valve on pressure/flow tester. With thermometer in fluid reservoir, start engine and warm fluid to 151-171°F (66-77°C). Turning wheels from stop-to-stop will aid in warming fluid. DO NOT hold wheels against stop.
- With engine at idle speed and gauge valve open, check initial pressure. See POWER STEERING PUMP PRESSURE TEST SPECIFICATIONS table. If pressure is more than 128 psi (9 kg/cm2 ), check for restricted hoses or crimped lines. Repair as necessary.
POWER STEERING PUMP PRESSURE TEST SPECIFICATIONS
| Application | psi (kg/cm2 ) |
|---|---|
| Idle Pressure | 50-80 (3.5-5.6) |
| Relief Pressure | 1200-1300 (84.4-91.4) |