Where are you harvesting that you need duals on a 4420? We have been through some pretty soft ground with ours equipped with 23.1-26 tires. I would think the duals would greatly shorten the life of your final drives, and turning would require a pretty large headland. But on the other hand, I bet you can nearly walk on water with that outfit!!
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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