F 550 2WD Super Duty V10-6.8L (2009)
Power Steering Bleeding: Service and Repair
Power Steering System Purging
NOTICE: If the air is not purged from the power steering system correctly, premature power steering pump failure may result. The condition
may 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 reservoir cap. Check the fluid.
2. Raise the front wheels off the floor.
3. Tightly insert the Power Steering Evacuation Cap into the reservoir and connect the Vacuum Pump Kit.
4. Start the engine.
5. Using the Vacuum Pump Kit, apply vacuum and maintain the maximum vacuum of 68-85 kPa (20-25 in-Hg).
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If the Vacuum Pump Kit does not maintain vacuum, check the power steering system for leaks before proceeding. For additional information,
refer to Power Steering Fluid Leak Test. See: Testing and Inspection/Component Tests and General Diagnostics/Power Steering Fluid Leak
Test
6. If equipped with Hydro-Boost(R), apply the brake pedal 4 times.
7. NOTICE: Do not hold the steering wheel against the stops for an extended amount of time. Damage to the power steering pump may
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 Kit and the Power Steering Evacuation Cap.
