Tractor Equipment Customization

[ArtMech]

Installation of a 3 point hitch optional link on my new/old Kubota Granbia-boy GB-15.

I had to reweld the top ends of both lifting rods. Those were welded just straight. It was a need to make them under an angle.

Another thing I didn't like was arrangement of the stabilizers. It was foreseen by a producer to mount them outwards. It looks not good to me. I decided to rearrange them to be mounted inwards.

To do this I had to remake two factory brackets into the one. It had to be cut both brackets and to weld them with a steel strip in the different way.

The result looks funny, but hope it'll work well.

It was important to avoid possible touch of a bracket with a PTO shaft or its plastic cover.

After an axle of lower links was shortened it was avoided of being bent load created by the stabilizers.

 

[IndyJay]

Installation of a 3 point hitch optional link on my new/old Kubota Granbia-boy GB-15.

View attachment 745082
View attachment 745079

I had to reweld the top ends of both lifting rods. Those were welded just straight. It was a need to make them under an angle.

View attachment 745084

Another thing I didn't like was arrangement of the stabilizers. It was foreseen by a producer to mount them outwards. It looks not good to me. I decided to rearrange them to be mounted inwards.

View attachment 745085

To do this I had to remake two factory brackets into the one. It had to be cut both brackets and to weld them with a steel strip in the different way.

View attachment 745086

View attachment 745087

View attachment 745088

The result looks funny, but hope it'll work well.

View attachment 745089

It was important to avoid possible touch of a bracket with a PTO shaft or its plastic cover.

View attachment 745091

View attachment 745093

After an axle of lower links was shortened it was avoided of being bent load created by the stabilizers.

Nicely done!

 

[Vigo327]

So I believe your modifications work just fine and there's no point changing any of it at this point.

However, as far as the stabilizers go you were correct to move them inside the 3pt arms, but.. On a factory setup (at least on my older Kubotas) they would simply go between the 3pt arm and the vertical bracket that the 'drawpin axle' goes through, not inside those walls as you have it. I do agree that what you've done would reinforce that bar if it were to flex enough to bind up in those sleeves, however I have not seen this occur on my similar size Kubota. No harm in your approach, though!

I agree that the yokes on those lift arms require some angle. I'm surprised they didn't come that way, but was the kit you bought specific for your Kubota or something universal?

 

[ArtMech]

So I believe your modifications work just fine and there's no point changing any of it at this point.

However, as far as the stabilizers go you were correct to move them inside the 3pt arms, but.. On a factory setup (at least on my older Kubotas) they would simply go between the 3pt arm and the vertical bracket that the 'drawpin axle' goes through, not inside those walls as you have it. I do agree that what you've done would reinforce that bar if it were to flex enough to bind up in those sleeves, however I have not seen this occur on my similar size Kubota. No harm in your approach, though!

I agree that the yokes on those lift arms require some angle. I'm surprised they didn't come that way, but was the kit you bought specific for your Kubota or something universal?

I will use quite a comparatively heavy implement on this tractor - Mateng G.FM-150H finish mower with a hydraulic off set, which weights 266 kg. Although it is too big for this small tractor (it requires more HP), but the decision to purchase this one was mine anyway.
That's one of the reasons a 3 pt hitch linkage should be as strong as possible, and a 'drawpin axle' shouldn't get bent by stabilizers.

Yes, the kit is China made universal one. I'd prefer to mount telescopic stabilizers, but it is what it is.

Love good observations. Thanks.

 

[ArtMech]

Next thing I have to do is to rearrange a stationary connected hydraulic cylinder, dedicated for the rotary tiller angle balance, into the port.

To do this I couldn't find a better place on a tractor to locate both ports except to fabricate a special 3 pt top link bracket to be able to fit them on it.

 

[Vigo327]

That looks great! Did you get it plumbed in yet?

 

[ArtMech]

That looks great! Did you get it plumbed in yet?

Not yet. I'm executing several projects at the same time. Sorry for delay.

 

[Curtis Cabs]

Awesome job, we love to see the innovation

 

[ArtMech]

Okay, back to this project. I have cut and grinded the sides of the top link bracket with the integrated holes for the quick couplers and painted. I have to wait for the paint to dry to be able to assemble it with the already made hydraulic pipes. That will allow me either to connect former permanently connected hydraulic cylinder (post #5, pic #1) back again or, what is most important, the possibility to connect any other hydraulically managed attachment. And, of course, to connect a top link. Lets say - it'll be a double function component.

 

[ArtMech]

So, here it is on a tractor.

The layout of the hydraulic lines.

Control panel. In case of rotary tiller inclination management you can choose automatic control of a hydraulic cylinder (CAT 0). In other cases (CAT 1) - manual.

This job is finished. A static test was done, no fluid leak appearance was noticed. Engine rpms react to the press of the buttons. We'll see how it'll work in a field.

 

[Graybeard315]

Nicely presented, thank you.

 

[ArtMech]

Well, let's continue.
Changes have happened. I changed the tractor GB15 to B72. They are almost identical.

But the B72 is equipped with power steering, which I will need when attaching up heavy implements and adding ballast up front.

All conversions described in this thread are carried over to this tractor.

 

[ArtMech]

After assembling the three-point kit, it turned out that the lower arms descend too high - 330 mm at a lower hitch point. This doesn't allow to attach an implement with a low (222 mm) hitching point. That's why both lift links had to be lengthened by welding up a piece of steel strip on each of them and drilling the holes.

 

[ArtMech]

A ballast from an unknown tractor in the front was fitted and bolted.

 

[ArtMech]

After installing the ballast, it turned out that the exhaust pipe was blowing gas right into it. I had to put a nozzle on the pipe, directing the exhaust gas to the side.

 

[ArtMech]

One of the last planned tasks was this - simple, but very important. It's ergonomics.
The seat springs seemed to work too hard for my body weight, as the rubber dampers touch the bottom and therefore it feels the shocks.

After it turned out that the springs still have a few millimeters of travel, I put two large washers on the top, thanks to which the dampers got higher and no longer reach the bottom. The shocks are no longer felt, the springs work softly.

A simple solution, but its effect is huge.

 

[ArtMech]

So, here is the general view of the tractor with implement. It seems to work fine, although as I wrote before, this lawn mower is not suitable for this tractor, but the adaptation was successful. There is a video in preparation about it.

 

[ArtMech]

Here is a video overview of the minor work done on the B72 tractor.

 

[Vigo327]

Nice work! Labor of love.. which i totally get because i am absurdly fond of my tiny Kubota B6100.

 

[ArtMech]

Nice work! Labor of love.. which i totally get because i am absurdly fond of my tiny Kubota B6100.

Thank you. My enthusiasm for such works is fading over the years, but inertia remains. I'm sure you know what I'm talking about.

Here I offer another video. I know it's not for me to teach the much better engineering minded US community, but still, maybe someone will find it useful.