J_J
Super Star Member
- Joined
- Sep 6, 2003
- Messages
- 18,952
- Location
- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
Some tractors only have the pump, 3pt, reservoir, and things are simple, because the low pressure out of the valve goes directly to tank.
The problem is, that just about all hydraulic valves, have a low psi rating between 250 and 500 psi. Herein lies the problem, no one seems to know if the high back pressure, maybe as high as 2500 psi will burst the an upstream valve, theoretically it could/should .
Best situation is where the loader valve has a PB port for downstream operations. All valve is series should have PB as the PB port is stronger and can take the pump pressure.
Some people have run downstream valves off the loader valves with no PB, and they seem to work .
With a loader valve installed, and you use the 3pt, the complete hyd circuit is pressurized, and all components should be able to withstand high pressure.
If you determine that you have PB, then the rest is fairly easy, if you can find a place to mount the parts/remotes. You could set up a valve with 3 spools, with different configurations, and be very versatile. For instance, you could set up a T-N-T rig, A detent spool could feed your log splitter. Float on one of the spools might be useful.
There is an easy and less expensive way to feed the log splitter, and that is to provide a hose from the loader /pump with a QD, call it Aux1. Another hose from the 3pto the rear, with QD and call it Aux2.
With no attachment, a short jumper with QD's will connect Aux1 and Aux2 together. When you want to use the log splitter, remove the short hose, and plug in the log splitter.
Your hyd flow path will now be pump, loader, log splitter, 3pt, and reservoir.
Tell us all the details about your tractor hyd, and someone should be able to help you get the maximum use out of the tractor hyd and any attachments.
Knowing the GPM's, and pressure the force in tons can be computed, and the cycle time.
Open center hyd system means that the pump is pumping fluid anytime the engine is running. The hyd fluid is flowing through the open center passages of the valve and through all valves in series.
Which ever valve lever is activated, will use the potential pressure and GPM's to operate cyl's/hyd motors, etc. The first valve up stream has priority, and also has the relief for the hyd system.
The problem is, that just about all hydraulic valves, have a low psi rating between 250 and 500 psi. Herein lies the problem, no one seems to know if the high back pressure, maybe as high as 2500 psi will burst the an upstream valve, theoretically it could/should .
Best situation is where the loader valve has a PB port for downstream operations. All valve is series should have PB as the PB port is stronger and can take the pump pressure.
Some people have run downstream valves off the loader valves with no PB, and they seem to work .
With a loader valve installed, and you use the 3pt, the complete hyd circuit is pressurized, and all components should be able to withstand high pressure.
If you determine that you have PB, then the rest is fairly easy, if you can find a place to mount the parts/remotes. You could set up a valve with 3 spools, with different configurations, and be very versatile. For instance, you could set up a T-N-T rig, A detent spool could feed your log splitter. Float on one of the spools might be useful.
There is an easy and less expensive way to feed the log splitter, and that is to provide a hose from the loader /pump with a QD, call it Aux1. Another hose from the 3pto the rear, with QD and call it Aux2.
With no attachment, a short jumper with QD's will connect Aux1 and Aux2 together. When you want to use the log splitter, remove the short hose, and plug in the log splitter.
Your hyd flow path will now be pump, loader, log splitter, 3pt, and reservoir.
Tell us all the details about your tractor hyd, and someone should be able to help you get the maximum use out of the tractor hyd and any attachments.
Knowing the GPM's, and pressure the force in tons can be computed, and the cycle time.
Open center hyd system means that the pump is pumping fluid anytime the engine is running. The hyd fluid is flowing through the open center passages of the valve and through all valves in series.
Which ever valve lever is activated, will use the potential pressure and GPM's to operate cyl's/hyd motors, etc. The first valve up stream has priority, and also has the relief for the hyd system.