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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1355 (Steering System - General Information) >> General Procedures >> Power Steering System Purging - 3.0L, 3.5L

Power Steering System Purging - 3.0L, 3.5L

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools

Illustration Tool Name Tool Number
GF0000997Courtesy of FORD MOTOR CO.
 Vacuum Pump Kit 416-D002 (D95L-7559-A) or equivalent
GF0001258Courtesy of FORD MOTOR CO.
 Evacuation Cap, Power Steering 211-265 or equivalent
Material

Item Specification
MERCON® V Automatic Transmission Fluid
XT-5-QM (or XT-5-QMC) (US); CXT-5-LM12 (Canada)		 MERCON® V
CAUTION: If the air is not purged from the power steering system correctly, premature power steering pump failure can result. The condition can occur on pre-delivery vehicles with evidence of aerated fluid or on vehicles that have had steering component repairs.
    NOTE: A whine heard from the power steering pump can be caused by air in the system. The power steering purge procedure must be carried out prior to any component repair for which power steering noise complaints are accompanied by evidence of aerated fluid.
  1. Remove the power steering pump reservoir cap. Check the fluid.
  2. Raise the front of the vehicle and support it on safety stands. For additional information, refer to JACKING AND LIFTING article.
  3. Tightly insert the stopper of the vacuum pump into the reservoir.
  4. Start the engine.
  5. Install the vacuum pump, apply vacuum and maintain the maximum vacuum of 68-85 kPa (20-25 in-Hg).
  6. If equipped with Hydro-Boost®, apply the brake pedal twice.
    7. CAUTION: Do not hold the steering wheel against the stops for an extended amount of time. Damage to the power steering pump may occur.
  7. Cycle the steering wheel fully from stop-to-stop 10 times.
  8. Stop the engine.
  9. Release the vacuum and remove the vacuum pump.
    10. NOTE: Do not overfill the reservoir.
  10. Fill the reservoir.
    • Use approved transmission fluid.
  11. Start the engine.
  12. Install the vacuum pump. Apply and maintain the maximum vacuum of 68-85 kPa (20-25 in-Hg).
    13. CAUTION: Do not hold the steering wheel against the stops for an extended amount of time. Damage to the power steering pump may occur.
  13. Cycle the steering wheel fully from stop-to-stop 10 times.
  14. Stop the engine, release the vacuum and remove the vacuum pump.
    15. NOTE: Do not overfill the reservoir.
  15. Fill the reservoir as needed and install the reservoir cap.
  16. Visually inspect the power steering system for leaks.
    17. NOTE: Do not overfill the reservoir.
  17. Fill the reservoir as needed and visually inspect the power steering system for leaks.
  18. Install the reservoir cap.
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