Aux. Hydraulics

[Sysop]

Depends on which valve. The log splitter has a valve too, and that valve must operate in an open center system also. If the valve on the log splitter isn't also open center, the moment you turned the rear remotes on the tractor would bog down and the hydraulic relief would kick in (exactly like if you activate the rear ports with nothing connected). If you turn the remotes on to feed the splitter, but don't activate the valve on the splitter, the 3 point lift should still operate with full power. As you open the valve on the splitter to operate it, it will reduce power to the 3 point lift.

 

[ovrszd]

Nope you got it in a nut shell. That's how the rear remotes are plumped. That's kind of what I'm missing. Alot of implements like a log splitter for a three point only have two lines. I assumed that an open center valve would feed the other three point unless you move the valve to activate the splitter that would make the three point inoperable until you move the valve back to center.

My Kubota feeds FEL, rear remotes, 3pt in that order. If using any of the first two the 3pt doesn't function.

So when tractor is running and no demand is on the hydraulics it powers the FEL valves and if no use PBs to the rear remotes, if no demand it PBs to the 3pt, if no demand it returns to tank.

In your example of splitter use. If the splitter has it's own valve the rear remote valve lever must be fastened into a power position. This supply power to the splitter valve which controls the splitter. If the splitter doesn't have a valve the rear remote valve lever is used to run the splitter.

So if you are wanting to power a backhoe attachment with it's own bank of valves you would plug into your rear remotes and then power position the lever. This would power the hoe and then you would control it with it's own valves.

I think.....

 

[yotehunter66]

That pretty much answers my question then. Yes if the implement you have hooked to the rear remotes has its own open center valve then the return from the splitter or back hoe in my case would feed my three point as long as I'm not using the implement.

 

[ovrszd]

That pretty much answers my question then. Yes if the implement you have hooked to the rear remotes has its own open center valve then the return from the splitter or back hoe in my case would feed my three point as long as I'm not using the implement.

Yes.

 

[yotehunter66]

Thanks guys. Didn't want to damage a pump or blow a line.

 

[ovrszd]

Thanks guys. Didn't want to damage a pump or blow a line.

Yep. I think someone mentioned, if you plumb something wrong it'll cause the relief valve to open. there will be a noticeable load on the tractor engine and a squealing sound.

 

[Sysop]

You'll hear the tractor "load up" and go into relief if something isn't right. Damage to the pump is possible if it is ran on relief for a long period, but nothing should simply "pop". The relief pressure is much lower than what good lines in good condition can handle.

 

[hunterj]

This is a basic 3 position block to center valve . Valves come In different variations depending on the need. You have pressure, tank, a and b ports. Fluid flows depending on position of the spool whether solenoid or lever actuated, maybe this helps clear up some of your question.
There are also manifold blocks that can be used to add more valves to a system. You can also stack valves to limit fluid pressure and flow.

 

[yotehunter66]

Thanks guys. Didn't want to damage a pump or blow a line.

 

[yotehunter66]

Double post. Sorry.