How do i change a power steering pump on a 2004 ford f 150 5.4 4x4

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Follow this steps

The items you will need include basic hand tools, shop rags, gloves, drip pan, fluid suction gun, power steering pump pulley removal tool, power steering pump pulley installation tool, power steering fluid, and a Haynes manual.

Use a suction gun to remove the power steering fluid.

Position a drip pan under the pump and disconnect the high pressure line and fluid return hose. Cap the ends of the lines.

Loosen the serpentine belt and slip it out of the power steering pump pulley. Replace any worn belts at this time.

Remove the bolts and nuts that hold the pump onto the engine.

Remove the pump. Now remove the pulley from the pump. To do this, use a power steering pump pulley removal tool. If you don't have one, you can rent one from Advance Auto Parts.

Remove the nuts to detach the pump from the brackets.

Reattach the bracket to the new pump. Reinstall the pulley.

Bolt the pump back into place. Slip the belt back onto the pulley and retighten. Reattach the high pressure line and return fluid hose.

Now fill the power steering fluid reservoir until it reaches to the proper level. Now start the vehicle. Recheck the fluid and add if necessary. Turn the wheels left and right a couple of times. So that's it, you are done. Test the vehicle to make sure it functions properly.