Full hydro orbital

offroadin 88xj

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Mar 6, 2010
Location
winston-salem
Im piecing together a full hydro set up for my xj has 05 d60 i got this orbital for free and didnt know if i would be able to use it to get me going for now
 

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Have you looked up the PN? I think you need an open center orbital valve or you will kill the PS pump real quick. I also think you want to stay away from the load reactive or load sensing orbital vales but don't take that as gospel.
Do you know what the valve came off of?
 
Most orbitals cannot be identified by their part numbers. If others are like Char-Lynn orbitals, the part number is a "drawing number" for a particular customer for a particular application. (I think that's probably why they are so expensive! They are built per customer orders!)

I'm not 100% sure, but when they have the (5th port) aux port, it is a "power beyond" orbital; a source for non steering related hydraulic pressure. I believe these are load sensing, closed center orbitals. They only "steer" when they "sense" a load applied (turning the wheel). Otherwise the steering ports are closed and the aux port is open. (someone correct me if this isn't true!:))

That said... Yes, it would operate a cylinder, but...as stated above...if you can't establish that it is an open center, (or if you could possibly run a circuit from the aux port back to tank) I wouldn't mess with it. You'll tear stuff up! And even then, it would be impossible to tell how quick or slow it would be until the entire system is built and mounted. Lotta work!
 
ol'Jeeps said:
Most orbitals cannot be identified by their part numbers. If others are like Char-Lynn orbitals, the part number is a "drawing number" for a particular customer for a particular application. (I think that's probably why they are so expensive! They are built per customer orders!)

I'm not 100% sure, but when they have the (5th port) aux port, it is a "power beyond" orbital; a source for non steering related hydraulic pressure. I believe these are load sensing, closed center orbitals. They only "steer" when they "sense" a load applied (turning the wheel). Otherwise the steering ports are closed and the aux port is open. (someone correct me if this isn't true!:))

That said... Yes, it would operate a cylinder, but...as stated above...if you can't establish that it is an open center, (or if you could possibly run a circuit from the aux port back to tank) I wouldn't mess with it. You'll tear stuff up! And even then, it would be impossible to tell how quick or slow it would be until the entire system is built and mounted. Lotta work!
Click to expand...

This might be true for most... but there is some equipment that uses open center with aux port. Not sure what that plumbing looks like, but I know they exist (@Jeff B )? The aux port can be used to feed hydroboost brakes in a buggy, or a rear steer valve.

The big question I have heard different answers to, is can you block the aux port? Many say no, but if the orbital is open center, I dont see why you cannot?

As said, if you cant contact the company to get help for specs, the only way to test it, that i am aware of, is build a hydraulic system with it inline. You'd likely have as much in that as buying another orbital.
 
Some you can block it off, (internal relief) some not.

The 5th port can be used typically to power hydro boost brakes or something else. As said. If you want to be safe and not using it, run it back to tank.

On my old Willis, I used the 5th port for the hydro boost brakes the return to tank.
 
Jeff B said:
Some you can block it off, (internal relief) some not.

The 5th port can be used typically to power hydro boost brakes or something else. As said. If you want to be safe and not using it, run it back to tank.

On my old Willis, I used the 5th port for the hydro boost brakes the return to tank.
Click to expand...

So i could tee it in with the return back to the resivor
 
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