Increasing lift capacity 3pt hitch of Kubota B3200

[Dave M7040]

Here is the section of the Kubota operator's manual dealing with the lift holes on a M7040.

I was not aware of the point that JJ is making about being able to easily adjust relief valve pressure.
I am going to look into it on my tractor.
Dave M7040

 

[J_J]

Dave,

Your relief valve is an adjustable relief valve located here. Item #10 J31700 SAFETY VALVE/RELIEF VALVE located in the M7040 PDF from Messnick.

If you have a loader, set that relief valve first, and then set the 3pt relief to the same setting.

 

[Dave M7040]

Thanks JJ.
I sent for and received the Messicks info but was a little confused by it and have not yet studied it.
I am currently away from my tractor but will be going there today.
I think I have a 3,000 psi pressure gauge and will first check to see what is coming from the pump.
Will checking on a quick connect from one of my remotes reveal the relief valve setting that is limiting my 3 pt hitch?
Dave M7040

 

[J_J]

If you put the gage in a tee in the IN port of the FEL valve, you can use it to monitor and test any valve on the tractor, and watch the pressure as it is developed by any hyd component.

First set the FEL valve to specs or whatever pressure you want.

If your tractor is under warranty, you probably should not mess with it, and let the dealer do all the checking for you.

 

[skyhook]

JJ, I think he is asking to test at the rear remotes QA, for pressure testing,
this way he will not need to tee in the IN port,
would this give him a true reading of the pressure?
If I were to disconnect a QA that "lifts' my loader up, and add a gauge to test the "lift"
would this also give me an accurate reading of lift force?

 

[J_J]

No, as the true force is when the load is directly on the rod end.

On tractors, and on other things hyd there is a mechanical force.

Look at your tractor and you will see the lift cyl are pushing the loader arms at an angle

If your cyl is pushing straight on, then the force would be a true force.

For instance, a 2 in cyl 1 in rod, and 2500 psi, the force would be about 7,854 lbs.

If the cyl is pushing the load at about 45 degrees, then the force would be about 5,554 lbs.

If it is strictly a cyl thing, a larger cyl will develop more force.

Tilting the load up will increase load capacity.

Smaller bucket = less static weight.

 

[J_J]

JJ, I think he is asking to test at the rear remotes QA, for pressure testing,
this way he will not need to tee in the IN port,
would this give him a true reading of the pressure?
If I were to disconnect a QA that "lifts' my loader up, and add a gauge to test the "lift"
would this also give me an accurate reading of lift force?

He can plug the gage anywhere in the pressure line and obtain the pressure, from the pump to the last valve work ports.

You also have to have a load for the cyl to develop pressure whether a real load or a valve lever induced load such as full extension or retract.

My point about the gage in a tee is that I think every hyd machine should have a hyd gage to monitor and troubleshoot.

The manufacturer could install a hyd gage each hyd machine for about $50.

If you were to look at all the post about pressure questions on this forum you would be reading for months if not years.

So when the guy that has a hyd gage post a question about the pressure he has, you already have a clue in trouble shooting.

You can instantly tell when the relief valve is operating.

 

[LD1]

Hope you got some front end weights cause thats alot of weight,

Still having a hard time picturing a simple 20 ton splitter weighing more than the 1700lb tractor itself. Got any pics?

As to lift capacity, Hooking the toplink in the highest spot helps. Makes it lift more level instead of rolling/pitching the back up, which requires more force. And if you have optional mounting holes like others have suggested.

But even doing all of that, I have a size or two larger tractor, and judging how it handles my 1100# 6' bushhog, I wouldnt want to put an 1800# splitter on my tractor. So I think you either need to add some wheels and tow it, or get a good bit larger machine. That is assuming it is 1800lbs.

 

[J_J]

Maybe look for another tractor as you are pushing it.

Lift force 1655 lbs.

 

[rswyan]

Still having a hard time picturing a simple 20 ton splitter weighing more than the 1700lb tractor itself. Got any pics?

Yeah ... that was my problem as well ...

This was the heaviest one I found after a quick look on BGU's website ... still, it's only 570kg ... and it's more of a firewood processor than just a simple splitter ... PTO driven apparently. Looks pretty cool:

Product Detail: BGU Maschinen