Can I change my controls on my BH92 backhoe?

[ovrszd]

Kbplaza's ISO example is correct. And my preferred pattern.

 

[LD1]

Not sure which is which. SAE vs ISO.....excavator vs backhoe.....Cat vs deere....etc

But I like the right stick being dipper and bucket. Left stick being swing and boom.

Thats how I set my mini (but its easy with a pattern change). But its also how dads backhoe (bota BH77) came from the factory.

My only other "backhoe" experience is 4-stick fords so this really dont apply.

But if no pattern changer valve.....simply swapping hoses. Most are the same size.....but even if not....a few bucks in adapters can make it happen

 

[Paystar]

I did mine. Thought I posted on here? But if not, I apologize for linking another site but I have pics and description here.

My B2620 Pics

www.mytractorforum.com

Now, my backhoe is smaller, but almost all the Kubota backhoes I have seen have the same color coding on these two lines you need to swap.
And as others have said, you need to be careful because some do have flow restrictions in certain circuits, and even my dealer warned me he has seen Deere's bend cylinders doing this, but I have done a bunch of digging with my model and all good so far.

 

[Green Acres Homestead]

Help need to change bh92 backhoe attachment to iso.

lever on driver side connects to a value. It looks like this value connects to two hoses …..one hose connector on top and one hose immediately below it. The same for the lever on the passenger side. Am I correct in saying I can just swap 4 hoses. Take the two from the right lever value and swap with the two that is on the left lever value?

 

[Paystar]

See above link

 

[EarlyAcres]

Hhhhmmm, according to your pictures above my BH90 is set up for/in ISO. I'm guessing that the BH92 is newer.

 

[Green Acres Homestead]

Hhhhmmm, according to your pictures above my BH90 is set up for/in ISO. I'm guessing that the BH92 is newer.

Mine is 2020. Three or 4 years old. ISO the left lever is to run the stick and the right lever runs the boom. Boom being the closer to you.

 

[Green Acres Homestead]

I did mine. Thought I posted on here? But if not, I apologize for linking another site but I have pics and description here.

My B2620 Pics

www.mytractorforum.com

Now, my backhoe is smaller, but almost all the Kubota backhoes I have seen have the same color coding on these two lines you need to swap.
And as others have said, you need to be careful because some do have flow restrictions in certain circuits, and even my dealer warned me he has seen Deere's bend cylinders doing this, but I have done a bunch of digging with my model and all good so far.

I changed only the hosed to iso format. Each value has an overflow and I would think that it would be set about the same but maybe not.

With the iso configuration it seems the boom at times does get the hydro as the stick seems to grab the hydro first. When the stick requirements are satisfied then the boom will kick in. Sometimes when the boom does kick in it can move very quickly. To quickly. I have to be light on the controls. It is workable but not as predictable and power does seem to be evenly spread or instantly. Sometimes the boom is delayed.

 

[Paystar]

I changed only the hosed to iso format. Each value has an overflow and I would think that it would be set about the same but maybe not.

With the iso configuration it seems the boom at times does get the hydro as the stick seems to grab the hydro first. When the stick requirements are satisfied then the boom will kick in. Sometimes when the boom does kick in it can move very quickly. To quickly. I have to be light on the controls. It is workable but not as predictable and power does seem to be evenly spread or instantly. Sometimes the boom is delayed.

Okay, I was lucky with the B2620. It never changed speed or response or power on mine.

 

[Green Acres Homestead]

Help: When using the backhoe, I am now experiencing a loud humming noise like the pump is starving for hydro fluid. I check the level and it is ok but the noise is when extend the stick and boom. I added hydro oil a bit an above the full line on the hydro level stick. This seems to fix or greatly help the noise. I am also experiencing a leak from the pin on the bottom of my tractor. Seems like hydro fluid. I am loosing 1/2 litre per hour. Other factors that changed. The leak started before I changed the plumbing on the backhoe to iso controls instead of backhoe controls. To achieve this I only changed the 4 lines not the block.

I wrote about the leak in another forum. I got great suggestions about the tractor having to put transmission seals in.
Questions I now have:
1. what is causing this noise.
2.Could the noise be caused by changing over to iso controls.
3.Can the leak cause the pump to starve for fluid even if the oil level is fine?
4. The extra cylenders on the backhoe of course need extra oil. Is the hydro reservoir on the tractor ample to supple this extra oil demand that the backhoe cylinders require?