I worked on a 1967 4000 with the same problem. I was able to fix it through the top (with the lid off!) It turned out the owner had fitted an implement with too long of a power shaft and then let the implement down , thus forcing the PTO shaft into the tractor and 'cupping' the thrust washer in the power/clutch pack. this did not allow the plates to seperate so the shaft was locked all the time, even when the engine was stopped. If the shaft can be turned by hand with the engine stopped ....then it is most likely a brake issue. Sam
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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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