 Aaron, as 430WLPG stated below, it isn't too tough to add a pump. The picture shows the Power Lift unit that was available for the H. It's a self-contained unit, consisting of reservoir, pump, and valving. If your tractor is S/N 27000 or newer, the swap is quite straightforward, except for fussing with the fan gear engagement. (The left-side governor cover, replaced by the Power Lift unit, is shimmed against the governor housing to locate the left governor shaft bearing, and that establishes gear mesh settings.) The later tractors (after 27000) were furnished with the longer governor shaft necessary to engage the Power Lift. Earlier tractors needed to have the shaft replaced, and that can be a lot of work because of all the items that must be pressed off the old, short shaft, and re-pressed onto the new shaft. The H Power Lift is a single-acting system, and is pretty much "full up or full down". It wasn't designed to stop during the lifting stage, so if you are looking for precision control from a hydraulic system, you would be disappointed in the performance of the H Power Lift.
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