Help tapping into HYDRO Kubota b5100

[Leejohn]

No.. Best to forget the diverter valve, less work and money. There are fitting that you can cut the hard line and hook in real easy. There is a good changes you could dead head the pump with a diverter valve.

 

[ptsg]

Yes, let's forget the diverter valve. All it takes is actuating the diverter valve, creating a pressure spike with no where to go and there goes a cracked pump.

And yes, you do need to connect the Tank line of the loader valve to the transmission sump, no matter what route you use. Unless you use a separate pump with a separate tank, then the line connects to that tank.

 

[LazyGator]

I was looking around and under the seat there is a plug I知 not sure how to describe it, If I tie into that then that could be the source of my high pressure? I saved the photo somewhere I will attach it. They have the stock diverter valve however I do not I will also attach a picture of mine

 

[LazyGator]

So the first one is what I would like to do, the second one is my tractor. I have a plug in the end of the not sure what you call it port I suppose, I cracked it open and it started dripping out with fluid, the return will be as straight forward as the design shown that should function just fine as my return line... I'm not sure if that piece coming from under my seat is pressurized I would assume it is but I could be wrong. Id rather forget the diverter valve as to not risk wrecking my pump. If that piece coming from under the seat is pressurized then my 3 point should still be able to work while the loader is in operation?

My next question I believe PTSG said the pump on the b7000 was 0.122CI what does this mean exactly? when I am looking to get the cylinders and a spool valve what should I be looking for?

 

[Leejohn]

1st off where you get that 1st picture? If on TBN give him a PM. By the looks of it he has to unplug the QC to made the point work, but you can't see all of it. BTY it looks as if his plug is still in. One thing you should find out is if the trans and rear end share the same tank. Some older models might not. It also looks like he isn't using the PB port from the loader, just the return port.

If you do end up cutting the pressure hard line go here https://www.discounthydraulichose.com/ and look at 27405 or 27455.

 

[LazyGator]

I found that picture on another forum I believe he was having troubles with a front snowplow or something, the Trans and rear end do share the same tank, the sump is located I believe just behind the fill plug. I cracked open the plug that's under my seat and it has pressure I'm not 100% sure what the original purpose was for, I was looking at 1" bore Cylinders I think that they should run smoothly? the tractor should be able to handle that size cylinder I would think.

This is the Cylinder https://www.princessauto.com/en/1-i...-cylinders/product/PA1000000428?skuId=8557662

 

[LazyGator]

So I decided I am going to do a pump mounted on the front off my crankshaft, I was able to make a deal to buy a used working pump. The pump is a Ronzio, the pressure bar is 210 which equals 3000 psi I believe, that should be plenty enough for me and I can run whatever cylinder size, I think I will probably end up with a 2 inch cylinder. I believe it is a Ronzio Z1 says made in italy on it thats about it

 

[Dave M7040]

I know I am asking a lot of questions but I thought of another... if I have pressure into a spool control valve that has a power beyond setup can I run the beyond part into my 3 point, and not run a return line since the 3 point has one?

Your sketch does not show a relief valve before the diverter valve so it is possible you could dead head your pump destroying it.

Your 3 pt hitch is a single acting cylinder so only one line is used. Gravity returns oil to the reservoir to lower the 3 pt hitch.

Start at the outlet of your main hydraulic pump and trace the rigid line as it goes towards the rear of your tractor. Look for any location where the rigid line enters and leaves a rectangular piece of metal.

If you find this take pictures and post them.

If you have that hydraulic block life will be much simpler

Dave M7040

 

[Dave M7040]

So I decided I am going to do a pump mounted on the front off my crankshaft, I was able to make a deal to buy a used working pump. The pump is a Ronzio, the pressure bar is 210 which equals 3000 psi I believe, that should be plenty enough for me and I can run whatever cylinder size, I think I will probably end up with a 2 inch cylinder. I believe it is a Ronzio Z1 says made in italy on it thats about it

Make certain the pump will rotate in the proper direction.

Coupling to the front of your engine can be a challenge. It there is a splined stub on the end of the crankshft, finding a fitting wi mate your pump to this splined stub is the big deal

Dave M7040

 

[LazyGator]

I ended up picking up a bi rotational pump as it was more local, 6.7 gpm around 2000 psi I believe. I知 not really sure how I will couple the 2 I might have to make up an adapter of some kind to fit if I can稚 find something I believe it痴 1/2 shaft on the pump