Power Beyond use on 3pt Log Splitter

[hoening]

I had a BX23 tractor and ran my DR dual direction log splitter with the two line hook up that was available when I removed the Back Hoe. I traded this tractor for a new BX23s because I liked all the refinements. I bought the flat face connectors to be able to use my splitter on the new tractor and it seems to work fine, I just don't use one of the lines. Last time I did this I did note the oil was hot when I disconnected the splitter from the tractor.
So my question is: Do I need to retrofit the log splitter to use the 3rd line (this may not be possible) on the tractor, or is it alright to run just with the two lines. To be honest I don't know for sure which of the lines I connected to the splitter (PB or ?) but it worked in both directions. Just want to to be sure the oil heat is not a result of not using the 3rd hook up.

 

[Dave_eng]

This is from memory so others may see it differently.

Your machine sends main hydraulic pump output directly to the hoe valve before any other use.. A power beyond port on the hoe valve is used to supply hydraulic power to other circuits like a FEL.

There is a main relief valve independent of the hoe valve. The hoe valve does NOT have a relief valve.

When you use a hoe function, you send oil into a cylinder but oil has to exit the opposite end of that same cylinder so one of the three hose connections on the hoe valve is a T (tank port) to allow this exiting oil an easy path back to the reservoir or Tank.

When the hoe is removed and you want to continue to use the tractor for other things like the FEL you have to loop a hose from the P ((output from pump) port to the PB port so there is a supply of high pressure oil for the loader to use.

The out port (labelled T) on your log splitter should connect to the Tank port on the rear of your machine not the power beyond port as the outlet port on your log splitter is not designed to tolerate full system pressure which is what it will see if you move the loader.

If you have an Owner's manual read it carefully about operating other devices from the rear remotes when the hoe is removed. Do not rely on my memory to be your final guide!

Dave

 

[hoening]

This is from memory so others may see it differently.

Your machine sends main hydraulic pump output directly to the hoe valve before any other use.. A power beyond port on the hoe valve is used to supply hydraulic power to other circuits like a FEL.

There is a main relief valve independent of the hoe valve. The hoe valve does NOT have a relief valve.

When you use a hoe function, you send oil into a cylinder but oil has to exit the opposite end of that same cylinder so one of the three hose connections on the hoe valve is a T (tank port) to allow this exiting oil an easy path back to the reservoir or Tank.

When the hoe is removed and you want to continue to use the tractor for other things like the FEL you have to loop a hose from the P ((output from pump) port to the PB port so there is a supply of high pressure oil for the loader to use.

The out port (labelled T) on your log splitter should connect to the Tank port on the rear of your machine not the power beyond port as the outlet port on your log splitter is not designed to tolerate full system pressure which is what it will see if you move the loader.

If you have an Owner's manual read it carefully about operating other devices from the rear remotes when the hoe is removed. Do not rely on my memory to be your final guide!

Dave

Dave,
Thanks for your input. I think I understand but I’ll check my manuals again when I remove the BH and don’t use the hydraulic connections I loop the two together but I want to understand which one is power P, power beyond PB, & tank T.

 

[Tim Horton]

In the few times, when it was popular to do a DIY splitter, and I was close to or involved in a DIY log splitter build.. The practice was to work backwards.. That is there was info available that a specific size, length cylinder for the tons of capacity needed would required x gallons per minute to work at an acceptable cycle speed...

This gpm value will tell you what you need from your tractor.. If that value is not available... You use your tractor pto horse power, and the gpm needed to get the correct size pto driven pump needed...

You need the numbers to make a system that is the most efficient and user friendly..