The county I work for just got a New 12M3 Cat Road Grader, This is the first one we have that has DEF. The others have DPF and regen but don't run DEF. We had a Cat technician put on a school for us on the new procedures for these engines. Such as when you shut off the key it may take 5 minutes before the computer decides to shut of the engine and purge the DEF. If you override it and do the emergency shut down the machine calls Cat. If you do this shutdown more than once we were warned that we better have proof of an emergency because Cat will void the warranty over multiple bypass shutdowns. Now the most interesting thing He shared with us is according to Cats testing, in places like California these engines are actually exhausting cleaner air than they ingest. The engines are cleaning the air!
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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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