The 105 Deere combine I used had the 348 gas engine, supposedly the same as the 4020 engine. Under full load, which was most of the time it drank a roughly calculated 7 gallons per hour. Then it got worse as the accelerator pump vacuum plunger wore and made it suck gas past the piston so I plugged the vacuum port to the accelerator pump. Had to slowly open the throttle after that but the gph went down to 5 and it purred like a kitten at idle. Disabling the accelerator pump would never work on a tractor but the combine engine ran wide open with no sudden loads so I got away with it.
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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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