JD 4520 remote problem diverter valve

[carolinatractor]

JD 4520 05 model. Has diverter part number lvb25511 kit added by JD to add SCV's 4 and 5 to the rear. They are controlled by a switch that controls a electric diverter valve.
The switch is on the right panel next to the lift handle not on the joystick or fender.
When the switch is flipped you are suppose to be able to use the loader joystick to control SCV's 4 and 5. The loader should not move when switch is activated.
Problem is that my loader still will go down, and nothing hooked to the rear remotes "SCV 4 and 5" will work.
The loader goes down, but does not have down pressure meaning it falls down but want pick up the tractor.

Took solenoid diverter coil and stem to hydraulic shop and they said it is working right.
Have unhooked loader QA's and rear remotes still don't work.
My dealers dont know what's wrong. I think it is plumbed wrong.
Please help.
If you have this setup please contact me so I can compare.
Part number is lvb25511
The rear hydraulics have never been used from when the tractor was bought new.
May be plumbed wrong from dealer??
If I could get a diagramI could check the plumbing.

Thanks

 

[kennyd]

There are diagrams in www.jdparts.com but I could not looks them up for you since I don't know if you have the CAB or Open Station model-the serial number is needed also.

Since all the lines are rigid, I think it would be hard to plumb it in wrong, but your dealer should be able to print the installation instructions for you if provided the info above.

 

[carolinatractor]

Got it fixed, it was a stuck valve in the the diverter manifold.