What was found
ELECTRO HYDRAULIC PUMP RUNS, BUT PRODUCED INSUFFICIENT HYDRAULIC PRESSURE TO MOVE GEAR PAST HALF RETRACT POSITION. FOUND FLUID LEVEL FULL. NO EXTERNAL LEAKS. PUMP SENT TO PIPER FOR REPAIR, BUT THEY LOST UNIT SOMEPLACE, SO WAS UNABLE TO FIND OUT WHAT WAS WRONG. INSTALLED NEW PUMP IN AIRCRAFT.