The 656,666,686 and most of the IH in that style have a large cast housing and they will have condensation on the inside and outside .I find once the oil is 4 or 5 years old you will get water in there and the best thing to do is drain the water out once the tractor has been sitting for a day or two. I usually do it once a year just before winter so it doesnt freeze up. The drain plug is just above the draw bar. If you change the oil you should be good for 2 or 3 years because the new oil will absorb some of the water.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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