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 - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let�s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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