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First, there is no true live pto for a Farmall H. M&W did make an attachment that installed where the left brake assembly is located that provided "sort of live" pto for Farmall H and M tractors. It was a hand-operated clutch that disconnected the left rear wheel from the drive train, thus stopping forward motion without stopping the transmission and pto shaft. They can sometimes be found on ebay and other places, but parts are no longer available except as used. That attachment did NOT allow for the transmission to be shifted with pto running. Live hydraulics was also offered by M&W by mounting a small pump behind the distributor on the right side of the engine. The Lift All hydraulic system (belly pump) that came with the tractor was then used as a reservoir. Those units were a big success, but again, are no longer manufactured and only available as used. By changing the front engine cover, I think you can mount a pump from a Super H, 300, or 350 on your tractor. If you go to all that trouble, you might consider upgrading to the better camshaft and heavier cam gear. That gear seems to be the weak point in the M&W system, and should be upgraded if going to the IH pump. If you search the archives, you can probably find some pictures of other alternatives for live hydraulics that can be put together if you are a talented mechanic/machinist and don't care about original looks. I remember seeing a post once that had pics of a pump on the right side of the engine that was chain-driven by the crankshaft. Reasonable Cost? That depends on how deep your pockets are! You can get into HUNDREDS of $$ very quickly, and live hydraulics including a larger reservoir, hoses and two or three valves can be over $1K.
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