Tee connections to Back Hoe??

[wmgeorge]

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Is there enough pressure drop or differential between each side of piston (via the valve switching), that the cylinder moves without relieving pressure to a tank, and yet has pressure to operate another device?

^^ I don't think i understand what you are asking here ^^

Well I think I answered my own question... that for a cylinder to move to one side would need to have less pressure than the other side... pressure side vs a return to tank, but I'm thinking the 4 way valve does the pressure differential internally, no need for a direct return to tank. But the remaining pressure is enough for the 3 point, if needed.


BTW it looks like the returns are coming in from NH, it will be interesting to see how you folks do with Obama vs Clinton and if Huckabee even places. BG in Iowa

 

[Ductape]

Yep..... after tonight, all the annoying phone calls will stop and the traffic will go back to normal. Not that its not good for us to be "on the map".....its just getting old now. They are already calling the winners ..... gonna be interesting......

 

[wmgeorge]

Well I think I answered my own question... that for a cylinder to move to one side would need to have less pressure than the other side... pressure side vs a return to tank, but I'm thinking the 4 way valve does the pressure differential internally, no need for a direct return to tank. But the remaining pressure is enough for the 3 point, if needed. BG in Iowa

A learning experience... you need three ports at the back, for the open center valve flow pressure In and PB out and return to hydraulic tank, reservoir which is the transmission case. I'm posting an AutoCAD drawing (of actual tractor piping) with my proposed changes, converted to a GIF file, hope that some who knows can make sure its ok. I see the vertical line connecting the (now 2 segments) Main red pressure line to the pump did not convert for some reason?? BG in Iowa.