Backhoe 3Pt log splitter off backhoe lines
- Thread starter KLX
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Ductape
Elite Member
That is definitely how i would run a splitter on my tractor.
dillo99
Gold Member
You should be able to do this. You may not get great speed out of the log splitter and thus it may take a little longer. Most splitters want 11 or so GPM out of the hydraulic pump. Not sure what you are getting off of your rear remotes but it is probably less - 6-7 GPM.
I run a splitter off of my remotes at only 5GPM's and it is tolerable.
The other drawback that people mention is that any time you hook an implement up to your remotes, you risk contamination of your hydraulic fluid. So you always want to be sure that the attachment has clean oil, isn't old/rusty, full of water, etc. I guess one could call this practicing safe hydraulics!
I run a splitter off of my remotes at only 5GPM's and it is tolerable.
The other drawback that people mention is that any time you hook an implement up to your remotes, you risk contamination of your hydraulic fluid. So you always want to be sure that the attachment has clean oil, isn't old/rusty, full of water, etc. I guess one could call this practicing safe hydraulics!
gc2310
Bronze Member
I run a Wallenstein splitter off the tractor hydraulics. It works fine, a touch slow but the benefits outweigh any disadvantages.
Hey, I have a BX24 as well and am considering a 3 pt splitter. Which line did you connect to on the tractor side, the regular return or the power beyond? If the PB is not reconnected will the loader function and the 3PH? I realize your post is old, and I did read many other posts re. PB circuits, but haven't seen anyone discuss what to do when the backhoe isn't installed. Without another cylinder (splitter, etc.) connected when the BH is removed, the tractor's outlet must be connected to the PB inlet presumably to keep the flow going to the next valve. So I am guessing that the return line from the splitter should be connected to the PB inlet at the tractor. Any feedback would be appreciated. Thanks!
Keith
Keith
kennyd
Advertiser
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?
ayelvington
Gold Member
I am looking at the Harbor Freight 3 pt splitter as a poor man's luxury. Has anyone done a complete install of one of these to the backhoe connections? The manual doesn't say if it's a center-open or center-closed valve, so I'm going to call HF tomorrow.
RSVP
RSVP
radioman
Super Member
kennyd- in your last post- basically the power beyond loop can be disconnected and reconnected to any open center valve ? then what the third connection on the BX24 for ? same goes for BX25. I am trying to understand the 3 connections on the back of BX for BH. when the PBY loop is disconnected - I would be left standing with 3 hydraulic connections. One for out PBY and other PBY in. and the third is ?
kennyd
Advertiser
kennyd- in your last post- basically the power beyond loop can be disconnected and reconnected to any open center valve ? then what the third connection on the BX24 for ? same goes for BX25. I am trying to understand the 3 connections on the back of BX for BH. when the PBY loop is disconnected - I would be left standing with 3 hydraulic connections. One for out PBY and other PBY in. and the third is ?
Here is the best answer I can give since I have little knowledge of how Kubota does it specifically:
On some John Deere's, the PB setup (tractor side) consists of one OUT (pressure, feed, supply-whatever you want to call it) and two IN's (return, return-to-tank, sump, reservoir, blah-blah-blah)
Now, one of the returns actually feeds the 3PH valve, it is used when the backhoe is removed so the 3PH will be functional. You also would use that for a logsplitter return since you would want the 3PH to work.
The other return goes directly to the tank-thus bypassing the 3PH so it is inoperative, that return is used when a backhoe is mounted.
I realized this probably does NOT answer your question, but if you can show me drawings or pictures then I would be happy to dig deeper with you.
I've done this successfully with a RamSplitter on my 24...after lurking on the TBN "Hydraulic" forum for a long time, guidance from members with lots of hydraulic experience, and the WSM to understand my hydraulic system. When the BH is removed from a 24, the pressure-in line is connected to the PB line and the tank line is capped. To use this PB path for a splitter, connect the pressure-in to the splitter inlet, and the splitter outlet to the PB. This maintains the integrity of the PB...BUT, there is a caveat. Since most splitter valves are intended to operate standalone, they expect pump pressure on the inlet side, but not on the outlet (tank) side. If you use a PB circuit to plumb your splitter, you need to know the splitter valve's max allowable outlet side pressure (mine is 500psi). If your splitter's outlet side can't handle your pump pressure, the splitter valve can be damaged when a downstream hydraulic function is activated. But, all is not lost. On a 24 (for example), the FEL is downstream from the BH (splitter). I can't use the FEL. Before, after, or in a pinch...temporarily removing the splitter from the PB circuit...but not with the splitter connected hydraulically.
radioman
Super Member
I am trying to understand my system as well since I have BX24 too.
wouldn't the OC valve solve this issue ? I am thinking that since the PB hose have nothing in between the in and out PB a open center valve is the same thing?
You mean the hose loop side is PB out ?
I thought if open center valve is used, and using the PB connection only the 3pt hitch and FEL will still work?
What does the WSM say for pressure for PB in?
wouldn't the OC valve solve this issue ? I am thinking that since the PB hose have nothing in between the in and out PB a open center valve is the same thing?
ayelvington
Gold Member
Many thankis for this discussion. I just ordered a Harbor Freight 3-point splitter today ($400 after the 20% off coupon!) and am looking forward to taking care of the rest of my woodpile!
RobA
Platinum Member
Where did you get the coupon from? Was it valid for in-store purchases? I was going to order one from the local store to save on shipping. An additional 20% off would be great!
Sorry for response delay...haven't been on TBN for a few days.
Q1: "Hose" side is from pump. Steel side is PB to FEL, then 3PT.
Q2: Everything downstream will work, the issue is whether splitter valve outlet side is rated to pump relief pressure. Splitters are not intended to be part of tractor's PB circuit...they simply return fluid to tank, using valve with a low pressure outlet side.
Q3: PB operates at pump pressure, up to relief setting.
Q4: Splitter valves are open center...when in neutral, they pass fluid (to tank) rather than interrupting flow.
RobA
Platinum Member
I bought the Harbor Freight log splitter this week and will attempt to hook it up this weekend. The splitter control valve has an inlet port and outlet port. Are the hydraulic supply lines for my backhoe marked for outlet and inlet? (My tractor is 25 miles away otherwise I would look right now).
radioman
Super Member
I doubt it- but I am not familar with the L series. Also I am not expert in hydraulics but I am in the learning stage right now. It seems that most of kubota models with BH have power beyond so you should have 3 hookups ports. IF you have power beyond on tractor and the HF splitter has a open center valve, you can put the splitter on the power beyond ports. The other port is another return to tank on tractor and not needed, but keep in mind with this setup you may lose the 3point hitch function to lift. just undo the hoses and you wil return the hyraulic flow to 3 pt.
jambx
Gold Member
- Joined
- May 14, 2007
- Messages
- 282
- Location
- Southern CT
- Tractor
- B2920 TLB, ZD21-60P, 1949 US Baird Beaver
RobA,
My HF Splitter has not arrived yet so I have to live through you for now!
Post Pictures when you can!
Radioman,
I am a bit worried now from what you are saying. All I was going to do is hook up the Splitter to my B2920 inlet and outlet BH ports. From what I think I am reading here the usage of my 3 PT lift maybe questionable....I was hoping to drop the splitter on the ground to pick up the larger pieces.
My HF Splitter has not arrived yet so I have to live through you for now!
Post Pictures when you can!
Radioman,
I am a bit worried now from what you are saying. All I was going to do is hook up the Splitter to my B2920 inlet and outlet BH ports. From what I think I am reading here the usage of my 3 PT lift maybe questionable....I was hoping to drop the splitter on the ground to pick up the larger pieces
....I was hoping to drop the splitter on the ground to pick up the larger pieces
For manageable logs, I position splitter at comfortable height, then hook it up. For large logs, I drop it to ground and leave it there...often, initial splits are still too heavy to manage.
You shouldn't "lose" it. If it's downstream in the PB circuit, you may not want to use it with splitter hooked up. Whenever an implement in the PB circuit is activated, everything upstream is subjected to pump pressure. The issue is whether the outlet side of the splitter valve can handle that pressure...
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