F 150 2WD V8-4.6L VIN W (2007)
Power Steering Bleeding: Service and Repair
Power Steering System Purging
Special Tool(s)
Material
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.
1. 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.
Remove the power steering pump reservoir cap. Check the fluid.
2. Raise the front wheels off the floor.
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 more than 3 to 5 seconds at a time. Damage to the power steering pump can
occur.
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. CAUTION: Do not overfill the reservoir.
Fill the reservoir.
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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 more than 3 to 5 seconds at a time. Damage to the power steering pump can
occur.
