Backhoe 3Pt log splitter off backhoe lines

[grum]

I'm planning on using my backhoe connections on my L3400 in a similar way as the log splitter, except that I want too be able to change the angle on my rear-mount grader blade for snow plowing. Can someone confirm for me that the female connector on the tractor goes to the pressure in on the remote control and the male on the tractor is the return line ? Thanks.

 

[RobA]

I'm planning on using my backhoe connections on my L3400 in a similar way as the log splitter, except that I want too be able to change the angle on my rear-mount grader blade for snow plowing. Can someone confirm for me that the female connector on the tractor goes to the pressure in on the remote control and the male on the tractor is the return line ? Thanks.

On my L5030 the female is the supply and the male is the return. I confirmed this in my owner's manual when I was hooking up the splitter.

 

[grum]

Great - that confirms what I was told by someone else. Thanks for the help!

As usual, I've left this project way too long, as we have another big dump of snow on the way, but if I get going on it I'll at least have it for the last ( i.e. read worst ! ) half of the winter.

 

[jambx]

Maybe I am missing something and I have spread this question a couple of times tonight in a few other areas of the site - basically I am getting hoses made for my HF Splitter tomorrow however i am not sure which of my BH lines is the supply and which one is the return.

Can anyone guide me on what is the best way to determine this?

 

[Ductape]

Follow them back........ doesn't one come out of the PB at your loader valve? The return would head toward the three point hitch or sump.

 

[jambx]

They both terminate under the seat.

In the owners manual the male connector is the "Inlet" and the female the "Outlet" - which one of these would be the supply?

Would it be as simple as plumbing the inlet hose to the inlet valve of the splitter and outlet to outlet?...

Sorry but it just doesnt seem to be straight forward to me.

 

[Ductape]

I would assume so......... but you should be able to have your hoses made with your best guess (i'd guess the male on the tractor will feed the splitter, female on the tractor would be return). If you hook up the hoses when you get home and they are backward, its a simple matter of removing the fittings and swapping the ends to correct them.

 

[ayelvington]

Another post on installing a splitter to the backhoe hydraulics:

http://www.tractorbynet.com/forums/attachments/158895-harbor-freight-3-point-log.html

 

[Kman.S]

Welcome to TBN Keith

You are correct in that the lines MUST be either connected together, or connected to a Open Center valve so that the fluid will have some place to go. There is the full flow of the hydraulic pump in those line whenever the tractor is running-and interrupting that flow can cause damage to the machine.

So basically, when the backhoe is removed-the two lines are coupled together forming the PB loop. You can insert a OC valve into the loop to power other things just the the backhoe is inserted into the loop.

Clear as mud?

kennyd, thanks for the reply. I've learned a lot from everyone on this forum.

Finally getting around to buying a 3 pt splitter. The hydraulics make a lot more sense to me now. If you run the return to the inlet that feeds the return to the 3 ph, you need to have a valve on the splitter that has an outlet side that can handle full hydraulic pressure (which will occur anytime that you operate any downstream valve, like the 3 ph, or FEL).

The alternative is to hookup the return to the tank instead of to the 3 ph (PB). The splitter will work fine, but your 3ph and FEL will not operate.

The best option is too have a power beyond type valve on your splitter (kind of expensive, though). This way when the splitter valve is in neutral position the flow will pass through it to the PB inlet on the tractor feeding the 3 ph and downstream valves.

A cheaper alternative might be to split the outlet from the pump. Feed the splitter with one leg and the PB with the other. Hookup the outlet from the splitter to the return to tank. Has anyone tried this??

I am no expert, but I haven't seen a post yet explaining it this way. So many posts that I've seen ignore that if you hookup your splitter via the PB circuit, you will expose the splitter valve outlet side to full pressure anytime that a downstream valve is operated. If I've got it wrong, please speak up. Thanks!

Keith

 

[kennyd]

kennyd, thanks for the reply. I've learned a lot from everyone on this forum.

Finally getting around to buying a 3 pt splitter. The hydraulics make a lot more sense to me now. If you run the return to the inlet that feeds the return to the 3 ph, you need to have a valve on the splitter that has an outlet side that can handle full hydraulic pressure (which will occur anytime that you operate any downstream valve, like the 3 ph, or FEL).

The alternative is to hookup the return to the tank instead of to the 3 ph (PB). The splitter will work fine, but your 3ph and FEL will not operate.

The best option is too have a power beyond type valve on your splitter (kind of expensive, though). This way when the splitter valve is in neutral position the flow will pass through it to the PB inlet on the tractor feeding the 3 ph and downstream valves.


I am no expert, but I haven't seen a post yet explaining it this way. So many posts that I've seen ignore that if you hookup your splitter via the PB circuit, you will expose the splitter valve outlet side to full pressure anytime that a downstream valve is operated. If I've got it wrong, please speak up. Thanks!

Keith

Keith,

While everything you wrote is technically correct-I does not need to be that complicated for a logspliiter. If it's plumbed into the PB loop, then it only becomes the "downstream" valve when the 3PH is used...and max pressure will not be seen from just moving the splitter up or down on the 3PH. There are MANY backhoes and lodsplitters plumbed in this way and you cannont find one post about a cracked valve.

A cheaper alternative might be to split the outlet from the pump. Feed the splitter with one leg and the PB with the other. Hookup the outlet from the splitter to the return to tank. Has anyone tried this??

So how would you "split" the outlet from the pump?