The IH 460, 560, and 660 all use a 4 degree light load advance injection pump. At low idle, and high idle no load pump cam ring is moved the 4 degrees pump advance. At 1/2 load at any speed the advance cam ring is moved back to the 2 degree range. Under full load the cam ring moves completely back to start/no advance position. It's BEST set on the pump test bench, but I have set a few with tractor running on a PTO dyno to change the engine load and check the cam ring advance with the bat wing gauge. Some IH 656 had load advance too, and some had speed advance like the 706 had.
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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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