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Best way to flush PS pump?

When I started the car I got some weird funky foamy stuff that came out of the pump line (it was loose), there is still some stuff inside the pump and was trying to figure out the best method of flushing it out. Any ideas?
 
Go pick up a bottle or two of Seafoam TransTune and a bottle of power steering fluid. Pull the return line from the pump and put it in a bucket. Have someone start the car and slowly turn the wheel back and forth while you keep the pump full of TransTune. When the return line starts coming out clear, switch to power steering fluid. When the return line is nice and red again, shut the car off and top off the reservoir with psf.
 
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