electric hydraulic valves with toggle switches

[J_J]

That is exactly what I said.

 

[AKKAMAAN]

That is exactly what I said.

Originally Posted by J_J

Would not a properly designed electric valve system have a relief valve before the electric valves?

Looks like a question to me.....

 

[johnjd]

here is the electric over hydraulic valve that I have and I do not have any problems feathering the grapple on the loader

 

[kennyd]

here is the electric over hydraulic valve that I have and I do not have any problems feathering the grapple on the loader

That is a "diverter" valve correct? Flip a switch and you still use the joystick to control motion? That is NOT what they are talking about in this thread That's the same basic setup I have on my machine.

 

[J_J]

MD3

Do you have a diverter valve and are you using the joystick to operate the grapple? If so, you should be able to feather the hyd operation.

Is this something you want to do, or have done?

 

[MD3]

MD3

Do you have a diverter valve and are you using the joystick to operate the grapple? If so, you should be able to feather the hyd operation.

Is this something you want to do, or have done?

No I do not have a diverter valve. I have a bank of 4 electric valves on a manifold. This 4 bank valve set-up came off of a truck crane. I also have a JD 400 series backhoe (power beyond) . It would seem like the most economical way for me to add 4 sets of hydraulic ports in the rear. I also found a few items in a box marked port meter in-flow. I think that the port meters would take the place of you needle valves suggestion J_J right???

 

[mmurphy]

No I do not have a diverter valve. I have a bank of 4 electric valves on a manifold. This 4 bank valve set-up came off of a truck crane. I also have a JD 400 series backhoe (power beyond) . It would seem like the most economical way for me to add 4 sets of hydraulic ports in the rear. I also found a few items in a box marked port meter in-flow. I think that the port meters would take the place of you needle valves suggestion J_J right???

Are you sure??? The JD400 should have a closed center hydraulic with a variable displacement piston pump. (power beyond?)

 

[J_J]

Do you have any pictures of the valve assembly. It may already have relief valves on it, and other things that a truck crane would have. Once mounted down stream of the FEL, the FEL relief valve should protect the rest of the system. You can slow the fluid GPM's by diverting some of it . Smaller hoses might help some. The grapple and T-N-T need low flow. An attachment using a hyd motor would use full flow through another valve for speed control. You could slow the GPM's before the valve assembly, or slow the flow down in each of the four circuits.

AKKAMAAN can probably draw you a schematic for adding the valve assembly to the existing hyd circuit.

Add a gage in the circuit for testing/trouble shooting.


.

 

[J_J]

JD4600 is open center, 2500 psi, 10.3 GPM.

 

[mmurphy]

JD4600 is open center, 2500 psi, 10.3 GPM.

He states JD400. Maybe he missed a number and was meaning 4600.
I have a JD400. It is closed center. Flow some where close to 30 gpm.
Cannot remember w/o looking up.