Posted by jollyrancher1975 on January 06, 2014 at 16:52:14 from (68.69.88.17):
my 3 point with a heavy 7 foot blade has some bobbing. it drops like a half a inch then raises, this happens rather quickly.When I shut the tractor off the 3 point slowly drops about 6 inches and stops. I looked inside fill plug with it running and saw no drips from the piston or anywhere else. I took the lift cover off and tore down the cylinder, the control valve looks fine, just some light wear on it no scuffing. my service manual points to the control valve. my problem is the cylinder has no paint on it so I don't know which one to order, yellow,blue or white. does anyone know what the difference in diameter between the colors? any other good way to trouble shoot a bobbing 3 point system, thanks for any help. rob
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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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