I have had four JD 7000 4 rows, both regular and conservation till and never had a wheel on one of them slide. The simple reason is all of the weight is on the two wheels. True, heavy duty down pressure springs can take weight off of the wheels, but they always worked together to keep everything turning. I now have two 6 rows, a Deere 7000 and a Kinze 2000. The Deere has 5 additional splitters on back. In no-till soybeans, corn stalks can and have knocked wheel drive chains off. If I would happen to have two drive chains off of the wheel sprocket and on irregular and ridged ground immediately I can see it in the monitor, the actual driving wheels either stop turning or begin to slide. I know right away I am not driving on all wheels. True, I am driving 11 units. The problem is always going exist when the outside wheels ride up on something either slightly or darn near lifting the center drive wheels off of the ground or when the center wheels drop into a dip. Does this planter use one cylinder in the middle and a rock shaft? or, does each wheel have an individual cylinder? The rock shaft style would not allow for as much up and down movement as would individual lift wheels. I do have dry fertilizer on my Kinze and I have stopped the drive shaft on it as well when the fertilizer tubes would get plugged. Planter just stops. Fortunately I think I have only broken one shear bolt. Has to be hard on drive chains. Sounds like it ought to be fixed right by putting in a new or used drive shaft, sprockets on the outside wheels, chains, and the "dogs" that let each wheel spin individually. Less tire pressure and fluid weight might do the job in the short run.
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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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