First make sure it REALLY is a Super H you're looking at - not just a regular H with "Super" decals applied. Spotting tips: Disc (not band) brakes; C-164 engine (numbers cast in the block near the serial number); last digit of "Y" on date code most major castings. If it's got a loader it should have a live hydraulic pump with reservoir under the gas tank and the battery under the seat. Once you've established is truly a Super H, look/listen for the normal stuff: Knocks or raps from the running engine, blue smoke in the exhaust, water in the crankcase, oil in the cooling system, leaks or drips from motor, cooling system, carb, hyd system, transmission. Run the tractor in every gear listening for gear whine (worn gears/bearings) or repeating clicks/clunks (busted gear teeth/bad bearings). Run it in road gear and check the front wheels for wobble (worn steering parts). Also try to stop it with the brakes while in road gear - brakes should be able to slow the tractor and load the engine, and the clutch should not slip. Look for blowby escaping from the crankcase breather tube (right side of motor below and behind the oil filter) with the motor loaded. Check the oil pressure both with motor cold (should be high) and warmed up/idling (needle stays out of the red). The ammeter should show charge at all speeds above idle. Nice if the temp gage works, but often it won't on an older, working tractor. Finally look at the shape of the tires. Fronts are cheap and easy to replace, but a new set of rears will run $600 or more. I'm sure others can add more, but this will get you started. Good luck! I own a '53 SH - it's a great tractor!!
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