Just to be clear the pump is a piston and Scotch Yoke unit driven by the PTO shaft. The pump would pump equally well running in either direction, but that is not even an issue because the PTO shaft turns the same direction whether you are going forward or in reverse!
As the others have told you, if the lift has lifted, then drops when you mash the clutch to the running board you have an internal oil leak in the lift mechanism... cylinder piston rings, or the relief valve, plus some other possibilities.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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