Back in the sixties, I broke a final drive shaft on a JD MT. The guy up at the shop managed to knock the fuel cap off the back of a work bench, and just got a new fuel cap and put on it. On the way home, the tractor quit- several times- so I ran it back to the dealer. They let it sit outside and run for two days, with not one miss. Headed home agian, and it started quitting again. Turned out the mechanic had replaced the cap with one from a 40. The 40 had a vented tank; the MT had a vented cap. It was drawing a suction on the tank as the gas was used, and starving for fuel.
Another one that intrigued us was a 4030 that suddenly became hard to shift without grinding. The pressures were all good, but it was a beyotch to get into gear. Happened to be working on the battery cables when I found a wood chip under a stop on the side of the transmission case, which was keeping the clutch from completely disengaging. Not a big piece- about the size of a pencil and maybe 1 to 2" long. Took me almost two years to find it. It was stuck behind the arm and over the shaft into the tranny.....
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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