Fluid Pressure Testing

Remove pressure hose from oil pump and attach adapter for pressure gauge (C3309E). Tighten to 22-29 ft. lbs. (30-39 N.m).
Start engine and place thermometer in reservoir. Close the gauge valve fully 3 times to bleed air from gauge. Check fluid level and add if necessary.
When oil temperature reaches 170°F (76.6°C) for type "A" pumps, or 122°F (50°C) for type "B" pumps, check pressure.

Fig 1: Exploded View Of Power Steering Pump
Courtesy of CHRYSLER GROUP, LLC

Type "A" shown, used on Arrow and Ram-50 models.

Fig 2: Exploded View of Power Steering Pump
Courtesy of CHRYSLER GROUP, LLC

Type "B" shown, used on Challenger and Sapporo models.
With valve closed, type "A" pumps should read 1066-1210 psi (75-85 kg/cm² ). Type "B" pumps should have a pressure of 925-1066 psi (65-75 kg/cm² ).
Valve open pressure for both types of pumps should be 142 psi (10 kg/cm² ). Reinstall pressure hose, taking care not to twist hose or interfere with adjacent parts.
CAUTION: Do not keep shut-off valve closed more than 3 seconds at a time. Do not keep steering wheel turned more than 10 seconds at a time.