I was a truck mechanic before I retired. If we had a problem like that, that was hard to find ,we would hook up the diagnostic computer, and drive it under the conditions that the problem occurred. One driver, one laptop man. You don't just look for fault codes to occur, you watch parameters:you look for readings that are wrong for your engine load situation. For example-the engine coolant temp reading can affect the PCM's delivery of fuel; the boost reading,intake air temp,fuel pressure,egr position, and so on. You know the engine is under a load, so your readings should be in a certain range. It's at idle so a different range. Sensors can fail 'in range'- in other words the PCM thinks the engine is not under aload,when actually it is. There can be mechanical faults that don't log a code, but if you load test with the laptop hooked up,you can find,and FIX,a lot of problems. Mark.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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