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Home >> Ford >> 1997 >> Cutaway E250 >> Repair and Diagnosis >> Steering >> Power Steering System >> System Tests >> Pump Flow & Pressure Test

Pump Flow & Pressure Test

NOTE: Testing power steering pump flow and pressure requires using Power Steering System Analyzer (014-00207) or equivalent.
  1. Disconnect the power steering pressure hose from the steering gear. Allow fluid to drain in to the drain pan. See Fig 1 .
    Fig 1: Replacing Power Steering Pressure Hose
    G00121288Courtesy of FORD MOTOR CO.
  2. Unclip the power steering pressure hose from the retainer on the frame, and position the hose upward. See Fig 1 .
  3. Install the analyzer fitting into the steering gear. See Fig 2 .
  4. Install the analyzer fitting into the power steering pressure hose that was removed from the steering gear. See Fig 2 .
    Fig 2: Installing Analyzer Fitting
    G00121289Courtesy of FORD MOTOR CO.
  5. Hook up the power steering analyzer in series between the two power steering analyzer fittings. See Fig 3 .
    Fig 3: Hooking Up Power Steering Analyzer
    G00121290Courtesy of FORD MOTOR CO.
    Fig 4: Power Steering System Analyzer (014-00207)
    G00121291Courtesy of FORD MOTOR CO.
    6. CAUTION: Make sure the valve on the power steering system analyzer is open, allowing the system to function normally.
  6. Fill the system.
  7. Place the Dial Thermometer in the power steering oil reserve.
    8. CAUTION: Don not hold the steering wheel against the stops for an extended period of time. Damage to the pump can occur.
  8. With the engine running, raise the fluid temperature to 122-140°F (50-60°C) by turning the steering wheel fully left and fully right several times.
    9. CAUTION: Do not leave the valve on the power steering analyzer closed for more than 15 seconds.
  9. Measure the power steering pump output pressure by closing the valve and increasing the engine speed to 1000-1500 RPM.
  10. If the pressure recorded is lower than the minimum specified pressure, replace the pump. If the pressure is too high, inspect for a kinked hose and repair if necessary. See PUMP & PRESSURE HOSE  under REMOVAL & INSTALLATION.
  11. Increase engine speed from idle to 2500 RPM. If the flow exceeds the maximum free flow specified, replace the power steering pump. See GENERAL SPECIFICATIONS  . See PUMP & PRESSURE HOSE  under REMOVAL & INSTALLATION.
  12. Measure the pressure generated at the steering gear by leaving the valve on the analyzer open and increasing engine speed to 1000-1500 RPM. Turn the steering wheel fully left or right and read the pressure.
  13. If the pressure is not within specifications, replace the steering gear. See POWER STEERING GEAR  under REMOVAL & INSTALLATION.
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