Why no "Power Beyond" for Kubota tractor?

[art]

Get to the parts break down of the hydraulics for the kubota backhoe. Best solution as going through more valves just keeps cutting away from what you might be able to do!

 

[Michael In Tennessee]

I think we all need to sit back and get back down to basics. Poor Cat is probably so overwhelmed with information on a subject he does not understand to begin with, that he cannot think straight. I am probably as guilty as anybody with providing information that does not bear on his basic problem. With long discourses he probably gets lost in the first couple sentences.

I agree. He is likely overwhelmed.

As I have asked twice now and he as never provided an answer to the basic question: What BH are you trying to connect; Kubota companion to his L, some brand after market frame mount, or 3 point hitch unit. That probably creates 3 different solutions. One of his posts has a BH piping diagram that could allude to an after market BH.

I'm pretty certain it is a 3 pt hitch mounted aftermarket BH. If he had the skills to attach a sub-frame, I'd bet he has the skills to do the hydraulics.

From what I know about Kubota all their BHs have a return to tank (T) line from its valve stack.

And you would be incorrect. Just look up any video on how to remove a Kubota BH. You will see two lines only. I got one in my shop. That is just the way it is. My initial understanding of open center hydraulics is that any valve stack should have return to tank. But, it doesn't seem to hold true. Look at any 3rd function kit. No tank line. Not, at least, on tractors the size of what most of us seem to have.

Once he answers that question, we can probably provide a direct to that unit definitive answer. Pictures and diagrams always help more than words as long as they deal with his specific brands and models.

Ron

Also agree. We need more info from the OP.

Doesn't Kubota make a kit for this? Perhaps the dealer's not understanding what it is that you want.

When I go on Kubota's build tool and add a backhoe to a 4060 it adds two packages, one of which sounds line a mount. The other ($300 something) might be the hydraulic connection.

I just went back and looked at my build sheet. I have no separate kit for hydraulics. Just the Hoe and the frame kit. You are probably right though on the 4060. That said, the necessary hydraulics support is two hoses, two disconnects and a mounting bracket (which the dealer installed wrong ) You can buy the hoses and QDs for maybe $75 - $100. A bracket to keep the mess out of the 3 pt parts would be a simple thing to cobble together.

Again, the OP needs to come back and help us help him.

 

[Fallon]

Half the problem is not knowing what you dont know. Figuring out what you are ignorant about & some key terms is the first step to learning. It's really hard to research & learn when you dont know where to start or what key terms to Google or otherwise dig into.

I'm betting he'll be back after some digging & learning.

 

[Tractor Seabee]

Micheal,


Quote Originally Posted by Tractor Seabee View Post

From what I know about Kubota all their BHs have a return to tank (T) line from its valve stack.

And you would be incorrect. Just look up any video on how to remove a Kubota BH. You will see two lines only. I got one in my shop. That is just the way it is. My initial understanding of open center hydraulics is that any valve stack should have return to tank. But, it doesn't seem to hold true. Look at any 3rd function kit. No tank line. Not, at least, on tractors the size of what most of us seem to have.

Notice that I limited my comment to what I think I know. I am probably wrong on some models.

Back again to basics: All hydraulic circuits have two primary lines. Power from the pump (normally ID as "P")The other returns fluid back to the sump (tank) the pump draws from (normally ID as "T"). All the intermediate piping and valves operate the functions. On open center circuits like we are discussing; Power fluid moving from valve stack to valve stack have a line between them to carry that fluid through the system and ultimately to the tank.

To determine the flow pattern and the intermediate components requires diagrams of both the tractor system and connected attachments. Again, discussing a tractor model other than the one the OP has just adds to the confusion.

I have failed to down load the hydraulic diagram of the L the OP provided and peruse its details. Will try to that tonight to be ready for his next post. For now I am off line till his next post.

Ron

 

[Cat_Driver]

Yes for all those that observed me being overwhelmed - spot on.
Combimed with the fact that even the local professionals I talked to are unhelpful of they themseved don't understand.
At the moment it's hard to determine which port or hose to tap into, so I do nothing.
I don't think throwing $1,400.00 at it will solve the problem either.

Any Kubota guys know where these hoses come from. I was thinking of using a T fitting here wit quick disconnects to the back of the tractor.

 

[Cat_Driver]

Half the problem is not knowing what you dont know. Figuring out what you are ignorant about & some key terms is the first step to learning. It's really hard to research & learn when you dont know where to start or what key terms to Google or otherwise dig into.

I'm betting he'll be back after some digging & learning.

Your right. Doing a lot of chin rubbing and laying under the tractor. BUT because I have (5) things using gydraulics 1) loader arms 2) loader bucket 3) rear remote #1 4) Rear Remote #2 5) Grappler plus all the hydrstat lines, rear three point lift tubes.
You see the mess of ins and out I have under this tractor it looks like a plumbers nightmare PLUS it's crowded as heck under there.
Since I'm not 100% sure what to disconnect I'm not going to disconnect anything.

Yes I'm now undertsand the concept of OPEN hydraulics I need to come in 100% ( THEN THE BACKHOE CONTROLS THE IN AND OUT) then I need 100% OUT to the tank. With not valve between the In and backhoe or between the OUT of the backhhoe.

I did call a guy who said he works on tractors to come look at it, but even he didn't seem to get the concept that the valve I have does not allow for fluid to return. Seems only you guys here undertsand and dealers and mechanics don't undertsand.

 

[Cat_Driver]

I agree. He is likely overwhelmed.



I'm pretty certain it is a 3 pt hitch mounted aftermarket BH. If he had the skills to attach a sub-frame, I'd bet he has the skills to do the hydraulics.



And you would be incorrect. Just look up any video on how to remove a Kubota BH. You will see two lines only. I got one in my shop. That is just the way it is. My initial understanding of open center hydraulics is that any valve stack should have return to tank. But, it doesn't seem to hold true. Look at any 3rd function kit. No tank line. Not, at least, on tractors the size of what most of us seem to have.



Also agree. We need more info from the OP.



I just went back and looked at my build sheet. I have no separate kit for hydraulics. Just the Hoe and the frame kit. You are probably right though on the 4060. That said, the necessary hydraulics support is two hoses, two disconnects and a mounting bracket (which the dealer installed wrong ) You can buy the hoses and QDs for maybe $75 - $100. A bracket to keep the mess out of the 3 pt parts would be a simple thing to cobble together.

Again, the OP needs to come back and help us help him.

Last time I had a Kubota with a Kubota backhoe they had a fram and an EXTERNAL PTO PUMP.
I was going to have a dealer put the same on this one but was quoted nearly 10K - NO THANKS.

The backhoe I got was a Chinese special for 3K delivered to my door. and using it like I did with it freezing
because of the hydraulics not comnnected correctly this backhoe is a BEAST just as good as the Kubota
It has nu sub frame and I understand the pros and cons of a subframe but my soild here is desert sand
or the equivalent to beach sand 100' deep.
I used this how on LOW LOW idle with zero rpms and it did everything I asked of it.....well exept feeezibg up
because their is no return of fluid, but while working it's amaging and stable with the outriggers down.

Yes I still can get a $1,100.00 Kubota PTO pump but why when the tractor pump handles the backhoe just fine.

BUT, if I can't find an appropriate place to tap into the hydraulics then that's the easy and exspensive way out.

Either way I'm still saving may thousands of dollars for something that will only he used now and
again to repair irrigation lines.

 

[LouNY]

I do not understand why your hoe would not operate on one of your rear remotes, it should have and it should not be freezing up.
As one of the earlier posters replied try picking up pressure from one of your rear remotes feeding your back hoe take the return to tank and try it going to your fill port.
I wouldn't recommend that as the final solution but it would allow you to verify that everything is working right, if it does then find a better location to tie the return into.
Your rear remotes are separate from your loader control valves aren't they?
If it has a regeneration function such as some bucket dump valves do it would not work.

 

[aczlan]

Yes for all those that observed me being overwhelmed - spot on.
Combimed with the fact that even the local professionals I talked to are unhelpful of they themseved don't understand.
At the moment it's hard to determine which port or hose to tap into, so I do nothing.
I don't think throwing $1,400.00 at it will solve the problem either.

Any Kubota guys know where these hoses come from. I was thinking of using a T fitting here wit quick disconnects to the back of the tractor.
View attachment 596239View attachment 596239

Are those pictures of the hydraulic lines going to/from your loader? If so, can you post a picture of where the lines go into the valve?

Aaron Z

 

[ericm979]

I think the parts for kit B22501 are the intake and outflow hoses on the tractor side of the backhoe. parts 7K500-64830 and 7K500-64850 are the two hoses. You'll need the connectors too of course but you don't need the Kubota ones, decent 1/2" ag connectors are like $20 a set. The parts fiche says s/n break so those may not be the right versions for your tractor but a dealer should be able to handle it.. Or Messicks' parts dept.

Kubota BH92 (BKHOE L32 / 35 / 39 / 42 / 44 / 47 / 5 / 52 / 574) Parts Diagrams, look for B22501 under hydraulic system. It even show what the hoses connect to (as isolated parts). One looks like the loader valve.

I don't understand why your dealer can't figure this out.