Will it work?

[ch1ch2]

I have a vintage JD 302. (@50HP) It originally had a bh and fel on it. It now has neither. I have an opportunity to buy a fel that is new. I believe it is a Case from a tractor of around 35 hp.
I have seen the schematics of the JD that show the FEL with closed center valves. I am thinking most new small tractor have open center valves.
Any ideas on making it work? I do not want to buy a new joystick set of valves, which would be the obvious way. Does anyone know if in fact the FEL does have open center or closed center valves in the joy stick?
I know this is asking a lot when I do not know the make and model of the FEL. It is 90 miles from here and I will not be there for another 2 weeks.

 

[J_J]

Your FEL cylinders do not care which type valves supplies the fluid.

If in fact the new FEL has open center valves, they might be convertible valves, where you simply add a Closed Center plug to the PB adapter.

If the valve is only open center, you will have to get a Closed Center valve.

Just match the valve flow to the tractor flow.

 

[Tx Jim]

ch1ch2
As you stated FEL valve used on a JD 302 needs to be closed center or have CC plug installed. Simple test is with FEL control valve return hose aimed in tractor hyd fill port and control levers in neutral no oil should exit hose when engine is running. Below is a photo of CC plug in case your not familiar with what one resembles.

 

[ch1ch2]

Sorry for the late reply. I was called out of town unexpectedly.
I have a little knowledge of hydraulics and very little experience. J_J, are you saying there is a good chance the joy stick has a PB and if it does all I need to do is install a plug?
Tx Jim, I like the concept but I would have to take my tractor to the seller's house and install the correct fitting/adaptors and hoses to his equipment to test.
I have left a message with the seller to get the model number of the few to help determine the type valves.

 

[Tx Jim]

Newer hyd FEL valves have a port for PBY or CC plug just so valve can be utilized for either OC or CC applications. A dedicated CC FEL valve does not need a PBY port or built in relief valve as pressure is controlled by stroke control valve in the hyd pump.

 

[J_J]

Sorry for the late reply. I was called out of town unexpectedly.
I have a little knowledge of hydraulics and very little experience. J_J, are you saying there is a good chance the joy stick has a PB and if it does all I need to do is install a plug?
Tx Jim, I like the concept but I would have to take my tractor to the seller's house and install the correct fitting/adaptors and hoses to his equipment to test.
I have left a message with the seller to get the model number of the few to help determine the type valves.

If the valve is PB capable, and used on CC system, the valve will need a PB adapter and a plug, or a CC plug, which is longer.

Show pic of valve , all sides if possible. Also indicate any markings by each port.

 

[ch1ch2]

Seller said it is a Case loader Model L340. I have not found any info on the internet yet.
I think I can get pics next week.

 

[ch1ch2]

I have found a digram that shows a PB line.
Does that help? I do not know how it would tie in. I my mine I see flow from the pump to the tank with some restriction to create back pressure on the line. The CC valve is tee'd into the line and when the valve opens, the flow due to back pressure, goes to the valve, to the cylinder, to another (non pressure) return to tank line.

 

[oldpilgrim]

I'd be more concerned that the hardware could be modified enough to mount to the tractor. The hydraulics are the least of your problem.

 

[ch1ch2]

I have steel and welders. Fit is not going to be a problem.