Brother!Sometimes, I'm so darn dumb that I think I need to be locked away. :>( I've always had this heating problem with my 686 after it pulls for an hour or so; couldn't figure the darned thing out. Didn't "seem" to be getting hot, but it just makes me nervous that it "says" it is hot. Yesterday, when the gauge got up to the "hot" mark, I stick the bulb of a new gauge in the radiator and the new gauge says the temperature is just fine. Okay, I've found the probelm, right? It's the gauge. Was telling the guys over on the Farmall board about it and one of the guys says, no that the thermostat is not opening far enough. Now, I'm worrying. Don't wanna hurt that engine. So, I spent an hour pulling sheet metal, etc off the tractor to gain access to the silly thermostat 'cause it is not all that easy on a 310. I've got her stripped completely down and find this in the picture. Little washer is totally blocking the water flow under the thermostat. Anyway, 2 hours total spent putting in the new thermostat and buttoning 'er back up. NOW, I'VE GOT IT! No sense putting that new gauge in, right? I'VE FINALLY FOUND THE PROBLEM! Dumb idea. I head fer the field and I should have replaced the gauge while I had her stripped down as well. After an hour of pulling, temperature is now reading "just off hot" so both items were bad and now I've got to strip her all back down again to put the gauge in too. Some days get long by default around my house. :>( Allan 
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