Preparing for removal: Make sure that the pawl is in the down position.
If it is in the up position, the ratchet and pawl mechanism will not be engaged. When it is not engaged, there is nothing to keep the pump set from falling into the well, after the pinch bolt is loosened.
Loosen the pinch bolt in the split flange to allow the riser tube to move, when cranking starts.
Start cranking. If the pump set does not move upward, it is very likely that there is slippage in the belts. If the belts slip, use a 3/16 inch Allen wrench to tighten the adjustment screws that push the bearing mount down, which then increases tension on the belt.