Here is a picture of the pump. It is similar to a bicycle pump, but makes much higher pressure.
The tank would screw on one end, and there is a part in the case that attaches to the opposite side to stand on. There's also wood handles that would attach to the end with the tank to use to push/pull the pump up and down.
I've been using 700 psi in the tank. Which should be similar to what the original pump would produce.