I have been getting more into working on pump stations, replacing motors and pumps. Sometimes the pumps have 50 or 100 horse motors, I have been getting by with a lift cart, but its far from perfect and some of these stations have some pretty crappy access, mud pits, deep potholes by the doors to the containers ect. I would like to build something to load and unload about 1/2 ton I figure. I would like to make it manageable to remove from truck bed, I was considering having it pivot from the 5th wheel rails in the truck bed. It wouldnt have to be that tall, and I could probably lift into working height by hand. Anyone built something like this?