Posted by Bob Bancroft on December 01, 2010 at 15:25:11 from (97.73.64.148):
This is neither antique, nor tractor, but I wanted to get exposure to as many opinions as possible. I have a CaseIH 1660 combine I have run for two small grain harvests and one corn harvest. It has over 5000 hours on it. It consumes a tiny amount of coolant. When parked it will occasionally leave a gob of gray sludge(typical of an anti freeze/oil emulsion) from the breather tube. Yet when I check and/or change the oil I get no sign of coolant. Is it possible I've got a crack or leaking soft plug in the head that leaks such a small amount up high only when running that it vaporizes? I've never seen anything like it. Any coolant leak into the crankcase I ever worked on was a sleeve, it wasn't tiny, and it didn't stop when the engine did. The oil cooler has obviously been worked on as there is no paint on it. I don't know if someone went after this problem, or what? Again, my experience is the much higher oil pressure in a leaking cooler will rapidly push into the cooling system, not the other way around. With the engine buried in its house up on top of this machine, I couldn't get it out of there in my shop if I wanted to. I am reluctant to start pulling the top of the engine apart blindly, only to find nothing and/or have to pull it anyhow.
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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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