While you have the valve cover off for repairs, check the injector control rack and injectors for free movement all the way from closed to full power. The rack levers move the injector control rods( looks like a rod with gear teeth cut in the side, sticking out of the side of the injector.). The most common reason for runaway of a Detroit diesel that has set unused for a while, is rust sticking an injector in the wide open position. Full travel on those control rods is from almost touching the injector body when closed, to extending out about 2 inches when in the wide open position. The rack must move smoothly with no sticking.
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Today's Featured Article - The Mud Daubers and the Old John Deere - by Jon Zehnder. I have a 1941, John Deere Model A tractor I have owned for about a year and a half. This is my first (in case my wife reads this, "FIRST") tractor and it has been a learning experience. After considerable advise and assistance from local tractor nuts and the forums of Yesterday�s Tractors, I had finally got it running pretty well. I have tuned it up, overhauled the carburetor, installed a borrowed, rebuilt magneto, installed a new Power-Trol, patched the radiator, installed new front wheels a
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