Could this be used to add hydraulics?

[BairleaFarm 340]

I have this Kubota parts tractor.   Couldn't I just unbolt the pump unit, attach it to the mule drive mount, and run it off the PTO by belt?  Assuming rotation is correct.

[Gasaholic 224]

Depends on what you want it for. If I wanted hydraulics on my tractor, I would most likely get myself a log splitter hydraulic pump - much smaller "envelope" to attach and configure. I can't imagine where I would want variable speed pump in hydraulics other than in motion control , and even then you could attach a hydraulic motor for the implement that hooks into the hydraulic pump separately - (Eaton tranny would be both the pump and the motor in one unit) If all you want is the hydraulics functions all you really need is the little bit of pump portion of the motor ( the cast iron bit at the front nearest the cooling fan) which is where most of the accessory hydraulics on equipped tractors will be attached. 

[BairleaFarm 340]

7 minutes ago, Gasaholic said:

... variable speed pump ...

 

See I don't even know the difference in hydro pumps.    Didn't know there was a difference.

[Gasaholic 224]

12 minutes ago, BairleaFarm said:

 

See I don't even know the difference in hydro pumps.    Didn't know there was a difference.

Yep. In your picture above, If you look at the shaft with the fan on it, it attaches to the pump input , and the pump itself is only that little bit just in front of the cooling fins of the motor (You can see the painted steel line that hooks into the pump which is the hydraulics take-off from pump... and the pump itself is just a Gerotor oil pump much like you might see in an automotive oil pump, and it is that pump that provides the fluid pressure that goes through the rest of the motor behind it (which is surrounded by the cooling fins housing) as fluid flows through a variable port into the ball pistons which turns fluid flow into a rotary motion at a variable rate and direction controlled by the motion lever giving you the infinitely variable speed drive of the hydrostatic drive which is then transferred to the transmission input shaft providing for forward & reverse... So the only part that creates the hydraulic pressure is that relatively smaller part of the front of the unit. If it were possible to remove that from the rest of the unit and mounted (and provide for oil supply) you'd have hydraulic pump right there - but it's much simpler and less complex to just hook up a regular hydraulic pump, and since it is unlikely that hydraulic accessories (Other than a bucket loader or backhoe) would need the pressure capabilities of a full blown log splitter, even that much of a hydraulic pump (from a log splitter) would be a little bit of overkill, TBH. But, were I to want hydraulics capability  (I.E. hydraulic lift, pretty much) yeah I'd go for a small accessory pump... Matter of fact, you could theoretically achieve hydraulic lift with a water cooled engine by tapping into the cooling system, if you sized things right (you'd need a big fat cylinder though, if you think about how car's hydraulic brakes work, little pressure on small long cylinder applied to short fat cylinder compounds the pressure to achieve the work) 

 

Ain't hydraulics theory fun?