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Tractor V ibration
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Posted by RonB on July 28, 2003 at 08:13:28 from (161.40.232.2):
I was mowing heavy brush with my JD 1250 tractor. Without any appearent reason (meaning I did not just run over a stump), the tractor started a violet vibration. This vibration appeared to be at about 120 cycles/second, not dependent upon engine speed? It I were to put the transmission into neutral, the vibration continues. I could stop the vibration by dropping either the front-end loader or the mower deck, but would restart by lifting the implement. I do not hear any noise coming from the engine. I was thinking that a bent crankshaft would be making noise?? Any ideas/comments would be appreciated. RONB
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