Ahh, there is nothing like banging away with an inch impact. Takes a ton (I mean a ton) of air to keep it fed, though. Big compressor, big feed hose. I don't know about the newer styles, but Dad's older Chicago Pneumatic requires a line oiler (unlike smaller impacts where you can get away with dribbling a drop or two in the inlet every once in a while).

I just helped Dad put a new rear case (and newer gears and new bearings) in one of his Farmall M's this last winter. The summer before it broke a tooth off a gear which then proceeded to go between the gear and the case. I guess it made a heck of a bang when it cracked.

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Keep everything as simple as possible-but no simpler--Albert Einstein