B6100 w/ Loader+Backhoe

Vigo

Well-known member

Equipment
B6100, B8200
Jan 9, 2022
595
340
63
San Antonio Texas
The hardest part was getting started! I've found that the best way to accelerate a project is cross 'the point of no return' as quickly as possible. Like, if i left the dipper on the tractor i could always wuss out. If i took it off the tractor i could put it back on. But once i cut it in half, now i have to fix it! :ROFLMAO:

That'll be next, pics of chopping it in half on a bandsaw. Im on a work computer so that'll have to wait til i have time at home to post.

Also, if you think that bucket is bad, JUST WAIT. The bucket this backhoe came with was so much worse!!
 
  • Haha
  • Like
Reactions: 1 users

Vigo

Well-known member

Equipment
B6100, B8200
Jan 9, 2022
595
340
63
San Antonio Texas
So here's the offending region before disassembly:
IMG_9609.JPG

Now with bucket links off showing the fully seized pin which resisted all efforts short of getting the whole dipper arm glowing red.
IMG_9610.JPG

After i verified that a 3x3x0.25 (maybe 3/16? cant remember) square tube i had was going to work, it's to the bandsaw.
IMG_9920a.JPG

MNSL5619.JPG


Here's the dipper after making an additional few cuts with an angle grinder.
IMG_9929.JPG

Here's the basic idea of how it was gonna lay in there:
IMG_9930.JPG

But before i could lay it in there, lots of steps. One thing, gotta knock down the weld seam im laying that 3x3 on top of:
IMG_9933.JPG

Luckily enough a sufficiently worn 4.5" angle grinder cutoff wheel will tuck right in there. I like to get my money's worth on these wheels.. :ROFLMAO:
IMG_9934.JPG

One of the things i needed to figure out was whether i would be able to scrounge the pin sleeves from the old dipper, or have to come up with my own. I determined that even if i cut the sleeves out from the inside of the old dipper, it would still protrude just about the right amount beyond the walls of the 3x3" tube.
AFTQ6631.JPG

Then, time to take a closer look.
IMG_9935.JPG
 
  • Like
Reactions: 1 user

Vigo

Well-known member

Equipment
B6100, B8200
Jan 9, 2022
595
340
63
San Antonio Texas
So the empty sleeve cut out of there like nothing, no story there. The one with the seized pin in it.. cut out with a seized pin still in it. I knew i'd be able to get the pin out by cutting a slot through the sleeve lengthways and hammering in punches to spread the sleeve off the pin. Once i broke it loose i was able to push it out with the press.

But now i've got a sleeve with a slot in the side. I had a feeling i could weld this back up by:
  • putting a 'small' 1" pin in, wrapping a bunch of turns of aluminum foil around it so the sleeve wouldn't weld to it
  • squeezing the sleeve 'tight' to the degree possible
  • welding the seam back up and letting it shrink just a bit.
Should result in a tighter (if not perfectly round) and 'usable' sleeve, plus it just seemed like an interesting theory to test (especially the foil..).

Again i used a 'pin' which was a section i had cut out of a bent up rock bar. Small enough that i could wrap some foil around it and still not have it be bigger than a 'real' 1" pin.
IMG_0680.JPG

And after some welding...
IMG_0681.JPG

So there it is. Probably with some molten aluminum mixed into the seriously undercut flux core weld, but my favorite saying is 'good enough is good enough' and i was able to easily pop the undersize pin out of it and after a little running of a 1" flap disc through it, it was ready. Here are the two sleeves test fit into the 16" bucket from my BL4520.
IMG_9941.JPG



Once i had measured these at just under 1.25" OD, i took the 3x3" to a drill press (not mine, i need one) and drilled the holes i needed for the sleeves, and somehow lost every single pic but this:
IMG_0192.JPG
 
  • Like
Reactions: 1 user

tsp159

Member

Equipment
B7100D
Feb 8, 2023
94
50
18
Fort Bend Texas
Progress is progress! I've been waiting for it to get below 100°F and 99% humidity before starting my loader rebuild. The dry air we got yesterday sure made that 95°F high yesterday feel real good!

Thanks for the continued progress updates!
 
  • Like
Reactions: 1 user

Vigo

Well-known member

Equipment
B6100, B8200
Jan 9, 2022
595
340
63
San Antonio Texas
Once i had the sleeves welded into the 3x3, i could weld the 3x3 to the dipper arm. I had the foresight to drill the 3x3 for the grease fitting access of the 'inner' pin before welding the sleeve in. The 'bucket' pin sleeve was so close to the open end of the 3x3 that it had its grease fitting access right there. After welding those sleeves in, i welded the 3x3 into the dipper.

I cut a bunch of slots and triangles to 'merge' the two sides together without having to 'cap' anything or install any plates to cover gaps. I wanted a little more 'grip' at the end of the 3x3 than what the welds on the other side were going to give me (keep in mind this is all mental guesswork by a guy with nothing REAL to point to to justify how he was thinking) I did 2 plug welds up near the end of the 3x3.

IMG_0678.JPG

And here's how it looked on the bottom.
IMG_0679.JPG

I cut triangles out of the sides of the 3x3 and hammered down the end to transition it into the original dipper arm a little more nicely. I also left the original sheetmetal on the dipper arm a little 'long' there so i could bend it up/outwards to 'meet' the bent-in 3x3.

Had to lop some extraneous width off this bucket linkage part that i dont know the name of. I did make some minor effort to square up sloppy cuts, but.. not too much.
IMG_0695.JPG


And here's a terrible terrible pic of the first time it was 'fully back together' with that 16" bucket on it. I never used it that way (16" bucket kinda too big for this) but as a test fit, well.. it fit!
IMG_0696a.JPG
 
Last edited:
  • Like
Reactions: 2 users

Lil Foot

Well-known member
Lifetime Member

Equipment
1979 B7100DT Gear, Nissan Hanix N150-2 Excavator
May 19, 2011
7,305
2,260
113
Peoria, AZ
What he said.⬆
 
  • Like
Reactions: 1 user

Vigo

Well-known member

Equipment
B6100, B8200
Jan 9, 2022
595
340
63
San Antonio Texas
Sorry guys, when i opened my laptop just now it still had that post open as if i was editing it. I'm guessing that if the post is open for editing by the poster that it makes the pics unavailable? Just a guess. It should be working now!
 
  • Like
Reactions: 1 users

tsp159

Member

Equipment
B7100D
Feb 8, 2023
94
50
18
Fort Bend Texas
Sorry guys, when i opened my laptop just now it still had that post open as if i was editing it. I'm guessing that if the post is open for editing by the poster that it makes the pics unavailable? Just a guess. It should be working now!
Much better now! Thanks for continuing to share this project.
 
  • Like
Reactions: 1 user

Vigo

Well-known member

Equipment
B6100, B8200
Jan 9, 2022
595
340
63
San Antonio Texas
I also welded shaft collars onto these bucket links which i also don't know the name for, to tighten up the worn holes.

IMG_9611.JPG

This pic shows the precise degrees of WTS (waller'd ta shit-ness).
IMG_9612.JPG

$2 shaft collars EVERYWHERE.
IMG_9613.JPG

IMG_9614.JPG

Tried to get them all square and parallel before tacking in place. With the wallowed holes if i had just welded them all separately there's a chance the center-to-center spacing between the holes wouldn't have matched, which would have put the pins in a bind.

This picture shows i did this before chopping the dipper arm.. but it also shows how sloppy that bucket was! That's next.
IMG_9918.JPG

Please excuse the ENTIRE background of that pic. Just look at the bucket.😅
 
  • Like
Reactions: 1 user

Vigo

Well-known member

Equipment
B6100, B8200
Jan 9, 2022
595
340
63
San Antonio Texas
So the hoe came with an 8" bucket which was absolutely HAMMERED!


IMG_0748.JPG

Of course the pin holes were fully WTS.
IMG_0749.JPG

The mount structure was starting to break away from the body of the bucket, which also started a decent crack on the left wall of the bucket here.
IMG_0750.JPG

There's that crack.

IMG_0747.JPG

The bottom and one side wall of the bucket were substantially swiss cheese.
Probably all due to a lack of drain holes! 🙄
IMG_0751.JPG

Side view of the wall of the bucket that had already rusted through. It was quite thin all around that area.
 
  • Like
Reactions: 1 user

Vigo

Well-known member

Equipment
B6100, B8200
Jan 9, 2022
595
340
63
San Antonio Texas
For a while i considered fully replacing the bucket with a $200 bucket from Northern Tool because they DO sell buckets for their towable hoe which will fit the "New and Improved" dipper arm after i modified it.

But then i decided that if the whole point of my taking on this project was to develop skills i'd like to use again (hopefully better by then!) i decided i should try and fix this bucket.

Luckily i had a nice little pile of metal from cutting up the dipper arm that would cover most of it.🤓
IMG_0752.JPG

Yeah, that's the ticket...🤨

IMG_0753.JPG

Something like this for the bottom. But they don't follow the curve of the bucket. So..
IMG_0754.JPG

Had to find the pieces for a DIY 'press brake'.
IMG_0755.JPG

Stand up the arbor plates, put the angle iron in the V notch, lay flat sheet across angle iron, put pipe on top, push on pipe, go slightly past the desired curve, release and.. voila. Perfecto😜
IMG_0756.JPG

Do that 3 times, then cut out the majority of the bottom of the bucket.
IMG_0768.JPG

That worked out well enough! Now what to do about the sidewalls..
IMG_0769.JPG

Ooooh i got it! Cut two squares out of some old bed frame thing..
IMG_0770.JPG

Then chop out the thinnest areas of the side walls and 'flush it in'. I think there's some magnets on the backside holding it up flush here.
IMG_0771.JPG

Then weld it in. One per side. I cant remember if i flap-disced those welds down. This was the first time i ever tried to weld a patch panel in flush to anything so i feel like i knocked those welds down just to see it 'nice' so i could feel cool about doing it for the first time.

Here's the bits that had come out of the bucket when all that was said and done.
IMG_1012.JPG
 
  • Like
Reactions: 1 users

Vigo

Well-known member

Equipment
B6100, B8200
Jan 9, 2022
595
340
63
San Antonio Texas
So, on to fixing up the mounting brackets and pin holes.

IMG_0779.JPG

I clamped this to close up the gap a little bit and then welded over every crack and gap from one side to the other, including the long crack in that left side wall.

When it came to tightening up pin holes, SHAFT COLLARS IT IS again, but wait.. uhh WHY are the brackets not centered on the bucket?!
IMG_0781.JPG

Solution: Use shaft collars of different thickness on each side to make up for this rubbish. I had a couple of taller ones and i think i cut down some for the other side. Worked out pretty ok to center the bucket over the dipper arm.

When i fitted the bucket i wanted to 'test' it but i also didn't want to move the tractor so i just decided to dig up my driveway and put it back. 🤪
IMG_0802.JPG

You can see various details here. Obviously the hose routing was still mostly external because i wasn't 'done done'. I had done lots of the prior repairs already by this pic but i had not for example put the dust boots on the swing cylinders. You can also see a white dust cover i had installed over the 'swing links' but i later spray painted those black so they didn't stand out so much.. Never painted that dipper though!! I had finished the outriggers and larger pads but the hairpins in there got replaced with something less easily snagged on later. The control tower was just loosely held onto the subframe with a couple of bolts, and i hadn't rebuilt/reinstalled the 'swing bumpers' or bumpstops which keep you from banging the arm into the subframe when you swing all the way to either side. I also hadn't rebuilt (actually totally replaced) the rotating seat base, so i was sitting on some metal box during this phase. 😬
 
  • Like
  • Haha
Reactions: 2 users

Vigo

Well-known member

Equipment
B6100, B8200
Jan 9, 2022
595
340
63
San Antonio Texas
Yeah, it's a miracle this thing had so many 'extenuating circumstances' to make it justifiable (in MY mind.. at the time..) to sink so much work into bringing it back up.

If i was already comfortable and confident doing a lot of this work I probably wouldn't have wanted to do it so much, but i wanted to cut my teeth on doing a lot of this stuff anyway and having it be another of the same tractor i was already such a big fan of owning, plus being for a close friend, all contributed.

At the end of the day i can say it definitely accomplished the goal of making me get over the hump of doubt that i could do any/all of this. I knew that considering all my other skills/experience, that was a near-guaranteed result, but talk is cheap and i had to do it to fully let myself believe it. Not saying this thing turned out pretty!!! But it is 'mechanically restored' in many respects and when all was said and done, it went from being a pile of shit to being tight and functional.

When i finished it and got back on my ~900hr B8200 backhoe tractor (which, who knows how many of those hours are even on the hoe itself) which i thought was tight before, and it felt loose.. Well, i was a little sad for myself but i knew i'd accomplished a lot on this one. :geek:

This build thread is actually ALMOST over/caught up to present. I have a few more topics to write on that i HAVE pics to support, and then a list of things i managed to lose all the visual evidence of.. But it's getting close. Again, no pics on work computer but i'll be back at it shortly.. thanks for the interest and positivity. (y)
 
  • Like
Reactions: 1 users

fried1765

Well-known member

Equipment
Kubota L48 TLB, Ford 1920 FEL, Ford 8N, SCAG Liberty Z, Gravely Pro.
Nov 14, 2019
6,922
4,345
113
Eastham, Ma
I also welded shaft collars onto these bucket links which i also don't know the name for, to tighten up the worn holes.

View attachment 111767
This pic shows the precise degrees of WTS (waller'd ta shit-ness).
View attachment 111768
$2 shaft collars EVERYWHERE.
View attachment 111769
View attachment 111770
Tried to get them all square and parallel before tacking in place. With the wallowed holes if i had just welded them all separately there's a chance the center-to-center spacing between the holes wouldn't have matched, which would have put the pins in a bind.

This picture shows i did this before chopping the dipper arm.. but it also shows how sloppy that bucket was! That's next.
View attachment 111771
Please excuse the ENTIRE background of that pic. Just look at the bucket.😅
I LIKE that background!
I have one very similar!
 
  • Like
  • Haha
Reactions: 1 users