After swapping out the pump and lines on my Powerstroke I'm going to do it again. The pump never came out of the store until it howled louder than the 7.3 gasp. Drained the liquid completely, fresh Mercon V plastics, and spent an hour purging the system of air. The wheels lifted off the ground and moved slowly from lock to lock twenty times. Then he led the return from the hydraulic booster to the pallet. After four liters of liquid it howls so loud. Support says I should maybe evacuate the power steering reservoir and hope for the best. garbage part