The 5900 is essentially a 10 series tractor. What I see in the parts book suggests it has the same priority valve pack as the 10's. So... you need a closed center load sensing valve. There's lots of options out there, all of them expensive. The first thing to check is that the priority valve pack actually has the combining/sequencing spool in the left side bore of the pack. If it has that you can add the CCLS valve and plumb the load sense line to the left side on the combining valve and the supply line to the rear of the pack, then the return line goes into the sump at the lift cover... The easiest solution may be a used valve bank... basically any modern row crop tractor bank will work IF it's ccls. Also lots of stuff out there on forestry/industrial and plow trucks that use Rexroth MP15/18/22 banks. You just need to watch the inlet porting. Prince may also have a cheap solution if you can find the correct inlet and outlet sections.
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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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