Posted by Brad2776 on September 06, 2008 at 18:06:42 from (208.103.8.28):
I rebuilt the aux control valve on Farmall 656,(gas, gear drive). Went to dealer and got all the correct orings and a new unlatching piston. Put it all together as per the shop manual and now It wont raise a hay rake. The control lever molves forward or reverse but does nothing. Im pretty sure its not airlocked cause i loosened the plug screw on the back of the sleeve and had fliud flowing out of there. What could I have messed up? Any help appreciated. It says that tunit must unlatch at not less then 1000 and not more then 1250. What are we dealing with here?
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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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