Case/Davis trencher backhoe

[Eugen]

Yeah Jeff, like you say, the rules are there for a reason. I never heard of an unicorporated area, have no idea what even that means. I doubt there is something like that here in Canada.

Here's a summary of the situation with the backhoe.

The backhoe steel frame is all apart, would be nice to paint it, but now I'm rushing to get it functional.

The boom, dipper, and bucket cylinders are still disassembled, need cleaning, and then assembly with new seals all throughout. Wish I had the weather and time to paint them now they are disassembled.

The stabilizer cylinders are apart, have the seals, but the rods need to be replaced. I'm trying to get chrome plated rod to make the rods.

Got hydraulic hose for the boom, dipper, bucket; these need to be assembled with the field replaceable fitting; got hoses done for one of the stabilizer cylinders. Next time I go to the city I'll get done the short hoses for the other stabilizer cylinder.

The valve needs to be washed, cleaned on the outside. Wish I could paint it too.

The big question is what device to attach it to. My 644s don't have the under-frame bracket, nor the webbed rear axles.

Will try installing a 15HP engine in the trencher and see if the drive train mechanism, which is all hydraulic, is broken or works. To do that I need to connect the engine to the existing hydraulic pump, which has an 11/16" shaft. Unfortunately I could not find an L-099 flex coupler (lovejoy) of this size. The one I have on hand is for a 3/4" diameter shaft. Last night I turned a bushing on the lathe, to fill in the space between the 11/16 shaft and the 3/4 lovejoy.

Being the cave man that I am I also spot welded it on the lovejoy.

This should be good enough to test the trencher, me thinks. And we will find out if I am wrong, when the time comes. Have to see how the new engine fits in there too.

[Eugen]

I always tell my wife the things I get have stuffed in the shed and tents are pieces of a puzzle. This puzzle is not always well defined, but it becomes aparent as time goes by.

A while ago I got a parts 446 which came with a new 15HP Chinese engine and hydraulic pump, flex coupling, and bracket. This is the engine I want to treat in the trencher. Turns out that the coupling needed a little massaging, but the pump bracket was a direct fit.

Didn't have any duck tape to fixate the engine to the frame, nor zip ties. So it just sits on the frame for this test.


Will it run?

[Eugen]

Better question is, will it stop?!


https://vimeo.com/819620928






try and ignore the crazy guy yelling in the background, strange people in our village here.

[Spike188]

@Eugen Woot, you just can't stop playing!

[Timj]

IT'S ALIVE

How does the tracks and drive seem?
This may be your quickest way to an operational hoe for now.

[JSinMO]

That’s awesome! I got excited as soon as I saw your updates! It’s alive!

Yeah Jeff, like you say, the rules are there for a reason. I never heard of an unicorporated area, have no idea what even that means. I doubt there is something like that here in Canada.
.

I thought I’d explain what I meant. Our property is not in any city, town, village, etc. We are governed by the county only. There is no planning or zoning department, no permits, no inspections, and no code book. If I want to build something on my land I just do it, I don’t need permission or approval from anybody. As far as I know the only regulations that have to be followed are for a septic system, and those are just guidelines from the county health department.

Areas like mine are called unincorporated, at least in Missouri. Can’t speak for other areas.

[Eugen]

Right on Tim! Tested it again, moves forward, left, right, stop. Blade goes up and down. A small oil leak on one of the hoses for the trencher up-down cylinder.

Now that I know it works, the backhoe goes on it indeed.

[DavidBarkey]

@Eugen
That is awesome bud .

[Eugen]

The gland threads were messed up pretty badly from rust, age, and my efforts to push the gland in far enough to get the lock ring out. Tried one of those external thread repair files but it didn't repair the threads enough for the nut to screw in. Figured it was 16 tpi so I set the lathe for thread cutting 16 tpi and cleaned up the threads on all three glands. This new tool with inserts did well.

One of the nuts has metal lodged in its threads, must've been pieces of the gland threads. Too big for the lathe chuck so I just gouged those pieces of metal out of the threads using an internal thread cutting tool, just with my hands. That also worked well.

[thebuildist]

How cool is that? Congrats, that's awesome!

Bob