Colt Case Ingersoll Garden Tractors

So I have a possible line on a Case D100 backhoe attachment from a Case trencher. It's what I consider to be very inexpensive. Cheaper than I'd pay to buy steel and cylinders.

It does have some kind of control levers, but it doesn't have any kind of outriggers or a place to attach a seat.

Obviously I'd need to fabricate some kind of mount with a subframe, etc, and rework this hoe's attachment frame to match. I'd try to work out some kind of a removable deal, where the whole underslung subframe can be easily removed. And I'm already piped to send it hyrdraulic flow.

So I feel confident enough about that part of it. But: Are my (non-gusseted) axle tubes strong enough to haul the dead weight around? If I need to reinforce them myself, how confident are we that they're cast steel, not cast iron?

And I guess I'd need to fabricate some outriggers and work them into the mounting area.

Anything else I need to think about before I take the plunge?

Bob

Bob this is what the transaxle in my 2001 4016 looks like. It's also got slightly different gearing. If you need more pictures or measurements let me know.

Are you just TRYING to make me jealous?

The down riggers should be part of the frame on which the backhoe is connected. Look carefully. Did you see the pics from my trencher that has the D100?

@thebuildist I can’t help you with the axel questions, but some other things came to mind.

My 648 has the D100 backhoe with vertical stabilizers like this.
They do work, but I think an outrigger style would be more stable and maybe better at preventing tipping when swinging the boom. I’m really aware when I’m moving the boom side to side to make sure I’m not getting in trouble.
The other thing I thought of is weight. Here is the difference between the D100 with vertical stabilizers and outriggers.
My backhoe weighs in at 810LBS without the bucket, not sure what it weighs. The subframe on my tractor has a 500LBS counter weight built into the front of it under the front of the tractor. The front end of the tractor is still very light. It takes very little to get the front wheels off the ground when traveling.

1) A subframe with counter balance may be difficult to make quick disconnect.

2) I’m not sure of the differences between my 648 and your tractor, but since I know my front end is still too light, would a quick disconnect subframe with no counter weight, and a bucket mounted counter weight be better? That would get the weight farther out in front of the tractor and hopefully balance it better.

Just some things I thought of. @Eugen added the backhoe manual to the technical library here some time back. It should have a lot on info in it for you.

Here's what I know about it until Monday:
As far as I can tell, that seems to be one of these:

https://www.bigiron.com/Lots/DavisCaseI ... Attachment

which has a big, beefy attachment frame, but no downriggers that I can perceive. So I presume I'll have to fab a set.

Thoughts on the need for reinforcing axle tubes, and how easy or difficult it'll be? If it's steel, I can weld in some gussets from 1/2" plate steel. If it's cast iron, I'll have to braze them in, which is a way more involved process.

Bob, sounds like a huge project to me, but I figure your the guy who can get it done from what I’ve seen from projects you have completed. I’ve always found myself that I have been tempted in buying something that is a big project for me. For myself I’m better off waiting until something more feasible comes along. I just have to play the waiting game until it does. Just my two cents. Harry

Bob, Around here the D100's in working condition asking price is $4000CD. I agree with Harry that this is a big project. From the pictures on your link it appears that the down riggers are not in the tubes. This makes me wonder if the down rigger cylinders and related piping is also missing. As far as under carriage and counter weights go, they can be fabricated with flatbar and slab plate.

The BH tractors came with webbed rear axles for added strength to carry the added weight of backhoe. There would be considerable stress on the axles when the hoe bucket was full of dirt while moving the tractor with its light front end.

Honestly I wouldn't put that heavy backhoe on your tractor. I know you've beefed up the frame and what-not. But a 4000 series with a d100 will drag your machine around and bounce the front end off the ground. You would have to make and extremely sturdy sub frame. I think if you do decide to buy it you should re sell it and buy something lighter and a hair smaller.

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@thebuildist Bob all the welding to web the rear axle would put a lot of internal stresses on the axle and possibly pull it out of align so as it would need line boring on the tubes . As for the D100 , why not make it tow able but still use your machine to anchor the front and power the hydraulics . Once in position outriggers would fold down and lift it off the wheels . or self propelled like this .food for thought