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Re: External cylinder running of internal hydraulics?

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Author  [Modern View]

03-03-2013 10:27:38

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There is a dearth of details only if you look in the wrong places ;-)

I know you have to chain the lift, but I am not sure why

Because if you don't as soon as the pressure in the system starts to rise the lift arms will come to the top and shut the pump off. It's a feature required by the design of teh internal pump :roll:

And is another valve needed, or once the lift is chained will the 3pt lever control the cylinder?

The quadrant control can be used to operate a single acting cylinder.

Also, anyone know what would I need to run a double acting cylinder of the internal hydraulics?

You would need to connect the test port to an external opencenter DA control valve and the return line from the DA valve to the sump. Then chain the lift arms down and raise the quadrant lever. The control valve is now receiving the full flow from the tractor hydrauilic system and can be used to operate the cylinder.

I have built lots of these systems and I can provide you with more information than you probably want. The pictures below are just a sampling of the things I've done for different people. In brief your options are
  • Chain the lift down and do it tthe "old fashion" way with the puny internal pump
  • Modify the top cover as shown in the top 4 pictures, add the appropriate vlaves, and you won't need the chains but you still have the puny flow rate from the internal pump
  • Add a modern external pump and go modern with live hydraulics and/or real remotes as shown in the last 3 picture


301.655.0631 (EST)

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03-04-2013 14:14:17

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 Re: External cylinder running of internal hydraulics? in reply to TheOldHokie, 03-03-2013 10:27:38  
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Do you sell the fill plug return port fitting? Looks great!

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03-04-2013 15:27:21

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 Re: External cylinder running of internal hydraulics? in reply to tachnem, 03-04-2013 14:14:17  
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Thanks - they are new steel toe Red Wing boots TOOH bought me for Xmas and the fit as good as they look ;-)

I sell any individual item you want.


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