Sorry I called you skip earlier, just missed your name at the end of your post. That further clarification helps, too. I knew about the cam lobes inside a conventional injection pump, but I also knew that those couldn"t serve to operate the Jake Brake, which was the source of my confusion. Now, I understand the concept of "unit injection," which uses a cam lobe on the main camshaft to actuate a pump integral to the injector itself. So, it all makes sense now.
One of the websites I looked at while trying to unravel all this implied that diesel engines are simpler than gasoline engines because they don"t require an ignition system. Not sure I"d subscribe to that theory - seems to me like the added complexity of the diesel fuel-injection system (and the varieties thereof) might counterbalance the simplicity of no ignition system.
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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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