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Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2597 (Steering System - Hydraulic Power Assist Steering (HPAS) -- F250-F550 Super Duty) >> Diagnosis And Testing >> Steering System >> Component Tests >> Steering Gear Grunt/Shudder Test

Steering Gear Grunt/Shudder Test

WARNING: This page is about a different car, the 2011 Ford Pickup, 2011 Ford F550 Super Duty, 2011 Ford F450 Super Duty, and 2011 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start and run the vehicle to operating temperature.
  2. Set engine idle speed to 1,200 rpm.
  3. Rotate the steering wheel to the RH stop, then turn the steering wheel 90 degrees back from that position. Slowly turn the steering wheel back and forth approximately one-twelfth of a full turn.
    NOTE: Do not hold the steering wheel against the stops for an extended amount of time. Damage to the power steering pump will occur.
  4. Turn the steering wheel another 90 degrees. Slowly turn the steering wheel back and forth approximately one-twelfth of a full turn.
  5. Repeat the test with the power steering fluid at different temperatures.
  6. If a light grunt is heard or a low (50-200 Hz) shudder is present, this is a normal steering system condition.
  7. If a loud grunt is heard, or a strong shudder is felt, purge the power steering system. Refer to POWER STEERING SYSTEM PURGING . If a loud grunt or strong shudder still exists, check the power steering lines/hoses for restrictions or damage and repair as necessary. Refer to POWER STEERING SYSTEM SERVICING . If the lines/hoses are OK, install a new steering gear. Refer to POWER STEERING SYSTEM SERVICING .
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