I"ll agree with Scott, but I don"t know that Bob S. doesn"t have it right too. Crankshafts on a tractor aren"t hard to get at. However, as I understand it, if your fingernail can feel ANYthing while drawing it across a journal, it should be turned. Ain"t cheap, though. The "grind/polish/finish" on my SA crank cost $130, beyond the cost for magnafluxing and checking runout ($24), and some $80 for new bearings. And that was on the replacement crank. The original one that was in my engine turned out, on magnafluxing, to have a crack! Maybe it all comes down to money. Nothing wrong with that either, if you need it back in the field. Nobody will guarantee how long before it needs it again, but the top RPM aren"t in the Nascar-range either.
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Today's Featured Article - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
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