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Home >> Lincoln >> 2003 >> Aviator AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 356 (Steering System - General Information - F150) >> General Procedures >> System Flushing

System Flushing

WARNING: This page is about a different car, the 2002 Ford Pickup and 2001 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Do not mix oil types. Any mixture or any unapproved oil can lead to seal deterioration and leaks. A leak can ultimately cause loss of fluid, which can result in a loss of power steering assist.
  1. Remove the ignition coil fuse to disable the vehicle.
    Fig 1: Identifying Ignition Coil Fuse
    G02192620Courtesy of FORD MOTOR CO.
  2. Disconnect the power steering return hose (3A713). Plug the reservoir.
    Fig 2: Disconnect Power Steering Return Hose
    G02192621Courtesy of FORD MOTOR CO.
  3. Attach an extension hose between the power steering return hose and an empty container.
  4. Raise the front wheels off the floor.
  5. Fill the reservoir.
    • Use Motorcraft MERCON® Multi-Purpose ATF XT-2-QDX or equivalent MERCON® fluid.
      Fig 3: Identifying Power Steering Reservoir
      G02192622Courtesy of FORD MOTOR CO.
    6. CAUTION: Do not crank the engine for more than 15 seconds at a time. Allow the starter to cool for 1 minute before cranking again. Premature starter failure can occur.
    CAUTION: Do not hold the steering wheel against the stops for more than three to five seconds at a time. Damage to the power steering pump could occur.
  6. Turn the steering wheel from stop-to-stop while cranking the engine until the fluid exiting the power steering return hose is clear of all contamination and debris.
    • Add Motorcraft MERCON® Multi-Purpose ATF XT-2-QDX or MERCON® equivalent as needed.
      Fig 4: Turning Steering Wheel From Stop-To-Stop
      G02192623Courtesy of FORD MOTOR CO.
  7. Lower the vehicle.
  8. Disconnect the extension hose from the power steering return hose. Remove the plug. Attach the power steering return hose to the reservoir.
    Fig 5: Attaching Power Steering Return Hose To Reservoir
    G02192624Courtesy of FORD MOTOR CO.
    9. CAUTION: Do not overfill the reservoir.
  9. Fill the reservoir.
    • Use Motorcraft MERCON® Multi-Purpose ATF XT-2-QDX or equivalent MERCON® fluid.
      Fig 6: Identifying Power Steering Reservoir
      G02192625Courtesy of FORD MOTOR CO.
  10. Install the ignition coil fuse.
    Fig 7: Installing Ignition Coil Fuse
    G02192626Courtesy of FORD MOTOR CO.
    11. CAUTION: Do not hold the steering wheel against the stops for more than three to five seconds at a time. Damage to the power steering pump could occur.
    Fig 8: Turning Steering Wheel From Stop-To-Stop
    G02192627Courtesy of FORD MOTOR CO.
  11. Start the engine and turn the steering wheel from stop-to-stop.
    12. NOTE: If the power steering system is noisy and accompanied by evidence of aerated fluid it will be necessary to purge the power steering system.
  12. Check the power steering fluid level.
    • Use Motorcraft MERCON® Multi-Purpose ATF XT-2-QDX or equivalent MERCON® fluid.
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