Bleeding Power Steering on Ford F-150?

[101lifts2]

Can someone post the service manual procedure on how to bleed the power steering on a 2006 F-150?

The cap was loose and fluid splilled out the reservoir (well my bud was using the truck and that is what he told mes). Filled it up and turned the wheel side to side about 20 times, but at idle the steering is hard in some spots. Tried picking up the front wheels and doing the same thing. A tad better, but no luck. If it's just a gravity feed system (like most), I'll have to replace the pump for 70 bucks, but I think these pumps are known junk.