F 250 4WD HD Pickup V8-460 7.5L VIN G EFI (1997)
Power Steering Pump: Testing and Inspection
DESCRIPTION
The pump flow and pressure tests will confirm or rule out the power steering pump as the cause of steering system problems.
Prior to performing the pump flow and pressure tests perform Pinpoint Test A. See: Testing and Inspection/Pinpoint Tests/A: Steering Very Difficult
or Very Easy If the system tests OK, or the concerns have been corrected and the loss of assist still exists, test the power steering pump flow and
pressure to determine whether the trouble is in the power steering pump, steering gear or power steering pump valve using the following test
equipment.
TEST EQUIPMENT
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engine tachometer
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thermometer -17° C to 140° C (0° F to 300° F)
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Power Steering Analyzer D81T-33610-A (Rotunda Model 014-00230) or equivalent
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one set of adapter fittings
Part 1 Of 2
Part 2 Of 2
TEST PROCEDURE
CAUTION: Possible contamination of the power steering system fluid can cause permanent damage to gauges and instruments incorporated in the
analyzer.
This procedure used in conjunction with Power Steering Analyzer D31T-33610-A (Rotunda Model 014-00230) or equivalent provides a method for
checking the complete power steering system. The analyzer can be used to determine the cause of hard steering or lack of assist problems. The
analyzer provides readouts for the following:
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system back pressure
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pump flow
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steering gear internal leakage
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power steering pump valve and cylinder internal leakage
Interpretation of the above readouts will determine which of the following conditions or components are the cause of the problem:
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restriction in hoses or fittings
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control valve and cylinder
