Posted by JD Seller on August 18, 2016 at 19:46:15 from (208.126.198.123):
In Reply to: Hydraulic cylinders posted by kccca on August 18, 2016 at 18:56:32:
It sound like you tested the cylinders for leaking butting them DOWN not up. You need to loosen the hose on the base end or extend side. Then apply pressure on the rod end or retract side. The seal maybe only leaking in the one direction. Neighbor had a Bush Hog 3615 and I have had to rebuilt both wing cylinders in the last two years. It was doing the exact same thing as yours is doing. The cylinder was only leaking when retracted. So it was applying pressure on the base end through the leak when you tried to fold the wings.
Another problem I have had on these type of systems is that they have an orifice in one of the hoses to limit the speed that the bush hog will fold. This also makes it so the wing will not drop as fast if a hose breaks too. I have seen these orifice fitting get plugged or stuck and cause the issues your having too.
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