Posted by jkloepping on October 30, 2012 at 15:55:00 from (184.108.40.206):
I have a Massey with a Perkins 1004.40T that has a strange engine noise/vibration. This tractor is new to me, so perhaps the sound is normal. It sounds like a low frequency "whomp whomp whomp" in time with the engine speed, even when stopped with both main and pto clutches disengaged. The tractor only has 1600 hours, and I just adjusted the valves and did a complete service. I plan to loosen the belts and run without the accessories.
Sounds like an out of balance noise to me, a bit like what sometimes happens when you drive a car down the freeway with the window open juuuust right.
The tractor runs and pulls fine, never heats up and is great otherwise, but this noise is really annoying, now that my attention has been drawn to it.
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