I built a woodsplitter with a 5 inch bore cylinder..It has a 3-1/2 inch diameter piston rod It take 2-1/2 gallons of oil to extend 30 inch"s. Because the rod is so large it takes only about a gallon to retract it.. this means that the oil behind the piston is being pushed out at a tremendous velocity. With a 7 gallon per minute pump, return oil may be going out a 20 GPM. (I"m not going to do the Math here)I plumbed the system with 3/4, 2 wire hose, the return line with 1 inch hose, and used a return line filter with 1-1/4 ports,rated at 30 GPM. My directional valve make was "Brand-Omaha", 1 inch ports, rated 40 GPM. No problems.Return velocity can blow filter elements off!
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Today's Featured Article - Fordson Model N: Field Service Operations and Lubrication - by Anthony West. The daily or weekly servicing of any vehicle is of the utmost importance, and in days gone by when our favorite tractors were doing an important and Commercially vital job on the farm, these service operations would make a major difference to the running costs and economy of the farm. This being so, it surprises me to see how many enthusiasts attending rallies, shows etc, seem to be unaware of the importance of this constant attention. Possibly the modern machine with its 6,000 mile or even once
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