Hydraulic System Pressure Test
- Check power steering pump drive belt tension and adjust if necessary. Disconnect high pressure hose from power steering pump. Connect Pressure Gauge (C-3309-E) to both hoses. See Fig 1. Connect spare pressure hose to gear or pump.
- Completely open test valve. Start engine and let idle. Check fluid level and adjust if necessary. At idle, gauge reading should be less than 125 psi (8.8 kg/cm2
). Initial pressure should be 50-80 psi (3.5-5.6 kg/cm2
).
CAUTION:
DO NOT
leave test valve closed for more the 5 SECONDS or operate pump with steering gear against stops for more than 2-4 SECONDS, as power steering pump may be damaged. Power steering pump maximum relief pressure is 1200-1300 psi (84.4-91.4 kg/cm2
).
- Fully close test valve 3 times and record highest pressure reading each time. All 3 pressure readings must be within specification and within 50 psi (3.5 kg/cm2
) of each other.
- If power steering pump pressures are greater than specification but not within 50 psi (3.5 kg/cm2
) of each other, replace power steering pump.
- If power steering pump pressures are within 50 psi (3.5 kg/cm2
) of each other but below specification, replace power steering pump.
- Completely open test valve. Turn steering wheel left then right against stops. Record highest indicated reading at each position (stop). If highest pressures are not the same against either stop, the power steering pump is leaking internally. Replace power steering pump.
Courtesy of CHRYSLER CORP. POWER STEERING PUMP SPECIFICATIONS
| Application |
Specifications |
| Pressure Relief |
1200-1300 psi (84.4-91.4 kg/cm2
) |
| Minimum Pump Flow |
1.7 GPM (6.4L/Min.) |