JD145 FEL control, closed to open center ?

[garymj]

I have a John Deere 2 spool closed center control valve, made by Cessna, from an older JD 145 front end loader; numbers in casting are : 30512-2C. Can it be converted to open center ? I have attached a photo of the valve ports and there are 2 unknown coin slot screws in the center of the usual 6 ports that my local Deere dealer didn't know about.He gave me a photocopy of the exploded diagram and parts list, and it says it is closed center. I am home-building a backhoe onto my logsplitter and have other open center valves installed in the system that can't be converted to closed center... if it can't be converted,is there a way to convert it to Power Beyond ? Or is there another device like a flow divider that will allow both open and closed center valves on the same circuit ? Also, my pump is a 26 ton Yard Machines logsplitter fixed displacement gear pump. Any recommendations will be appreciated.

 

[garybarron]

I know this is a long shot did you get the valve converted to open center? I need to do the same.
thanks

 

[J_J]

The post above from garymj, is 2008.

However:

If the valve is convertible, there is usually a port trough the middle or side of the valve, with a short hex plug in the convertible port, and this makes the valve open center. If you install a PB adapter in that same port, that makes the valve PB capable, and still open center. If you the install a closed center plug in that port, the valve becomes closed center. Here is an example of a convertible joystick valve.

http://www.surpluscenter.com/adspecs/AS9-8185.pdf