Posted by Vern-MI on February 27, 2008 at 03:50:29 from (207.69.137.39):
In Reply to: john deere 620 problems posted by Caleb in pa on February 26, 2008 at 16:40:44:
Probably both worn valve guides and worn piston rings. When you throttle back it closes the throttle plate and causes higher intake vacuum and pulls oil up past the rings indicating worn rings. Also when you throttle up it would have higher cylinder pressure causing more blowby past the piston rings which would come out the breather. Yep an overhaul is in it's future. If ya like the tractor fix it and enjoy it. Still cheaper than a new one.
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Today's Featured Article - Grain Threshing in the Early 40's - by Pat Browning. The setting is rural Wisconsin, halfway between East Troy and Elkhorn, on Hodunk Road, our nation was at war, and I was 6, 7 and 8 years old. George was our "threshing neighbor." He was the one with the threshing machine, a JI Case on steel wheels, and he pulled it to our farm with a JI Case standard tractor also on steel. In those days, steel wheeled implements were common. The roads were general gravel, so the lugs cutting into them wasn't a problem. George would set up the thresher, s
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