Case H-70 tiller on a Kubota??? Can I do that?

[easygo]

There is an Ingersol H-70 42" tiller for sale locally and I'm thinking about buying it. I was wondering if it is something I can run with the hydraulic remote valve on my tractor. The total hydraulic output of my machine is 9.5 gpm so that might work. The recommended flow for the motor on the tiller is stated as 8.5-11.5 gpm. But would I be able to modify the hitch to hook it up to a 3 point hitch? I don't have a very large garden but it is a workout to till it with my walk-behind and I just can not justify the expense of getting a PTO tiller.
Please give me some pointers on what kind of work I might be facing if I try to convert that tiller.
thank you

 

[kencunningham]

You will need a sleeve hitch adapter for your 3pt to hook it up. Please keep in mind that the hydraulic system of the case tractors uses motor oil, so i dont know if other types will work well.

 

[easygo]

Ken,

Thank you for the response. I had no Idea that the case units are run on motor oil instead of hydraulic oil. I would not want to subject the tractor to possible trouble. I guess it will not work then. ... bummer ...

 

[hydriv]

I don't know what model Kubota you have or what uses the hydraulic system on this tractor is put to. That would have to be determined first.

What you would like to do, does seem possible but I have some questions.

- are you positive that your hydraulic pump can deliver 9.5 GPM to the rear remote?

- if it can, how would you go about modifying your remote's control lever so that it constantly delivers oil to the tiller?

- if your tractor has power steering, does it have a dedicated power steering pump or does it get supplied by the same pump that also supplies the remotes?

- presumably, you have a FEL on this tractor... yes?

- aside from the FEL, are there any other devices/attachments/options that get connected to the existing hydraulic system?

As for hooking the Hy-till to your tractor, that's a pretty simple thing to do if you are capable of fabrication and you own tools used for cutting, bending and welding structural steel. You would need to make a larger version of the Case F-27 sleeve hitch adaptor. That's an A-frame that would clip onto your CAT 1 3 pt hitch just as the smaller Case CAT 0 adaptor does on Case GT's. You need some flat bar, a length of channel, some pipe and some CAT 1 pins.

Once you have the sleeve hitch adaptor constructed, the tiller will clip onto it with a regular lynch pin.

If your hydraulic system powers only the loader plus some ag equipment that has cylinders on it, then there is no harm in changing over to 15W40 motor oil. Your hydraulic pump doesn't care and neither do any of the cylinders or valves on your loader or attachments. The only thing that MIGHT be of concern is the power steering but I think that even it won't mind either since it likely uses a gerotor style of steering pump below your steering wheel.

To make all this happen, you would have to drain each cylinder on the loader one by one by disconnecting the hoses and then undoing the cylinder's ram so that you could physically compress and extend the ram. You would also have to drain the reservoir and the cylinders on any other attachments you normally power this tractor with. If you borrow attachments, then that would be a problem. Once you switch to motor oil, then you need to do your best to keep ONLY motor oil in the system.

If you don't, then the performance of the tiller will be affected.

 

[Ductape]

Is there a reason the tiller couldn't be drained and run on hydraulic oil ?

 

[hydriv]

Is there a reason the tiller couldn't be drained and run on hydraulic oil ?

Yes.

Hydraulic oil is far too thin to operate the gerotor type motor used on these tillers. The performance would suffer badly. The use of motor oil in hydraulic systems is nothing new nor is it unusual. However, in some applications such as this one, it is essential.

 

[easygo]

I have not checked on this thread in a while and I see that HYDRIV posted very detailed instructions on how I could utilize that tiller. My tractor has hydrostatic drive and I think that has to have hydraulic fluid.

Thank you for your input, but I decided I would not buy the tiller.

 

[hydriv]

I have not checked on this thread in a while and I see that HYDRIV posted very detailed instructions on how I could utilize that tiller. My tractor has hydrostatic drive and I think that has to have hydraulic fluid.

Thank you for your input, but I decided I would not buy the tiller.

The fact that your tractor has hydrostatic drive does not necessarily rule out using this tiller.

What does matter is whether or not your tractor has a separate hydraulic pump that looks after attachments such as loaders. If it does have such a pump, then the second issue is the gpm of that pump and the setting of the relief valve.

Whenever you are asking questions about your tractor, it is wise to include the make and model number so that people can give you better advice. There are thousands of tractors out there and they are not made the same way.