B7100 severe frame damage

payflint

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Equipment
Kubota B7100 HST 4x4
Aug 11, 2021
8
1
3
Northwest Missouri
Bought this tractor this way for a steal. The frame has been severely damaged somehow and then had a complete hack try to repair. I hope whoever did this is on here and can explain themselves because GOOD GRIEF those welds are terrible! It seems the frame must be slightly warped or bent as well. Trying to source a new part, because I think repairing this one will be futile.

Has anyone ever repaired a frame like this? What do you all suppose might have happened to it?
 

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85Hokie

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BX-25D ,PTB. Under Armor, '90&'92-B7100HST's, '06 BX1850 FEL
Jul 13, 2013
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Bedford - VA
I got tired of replacing those @#$##@ bolts too ...... but I DID - that is some nice bubble-gum for sure!!!!!!!!
 

85Hokie

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BX-25D ,PTB. Under Armor, '90&'92-B7100HST's, '06 BX1850 FEL
Jul 13, 2013
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What are these arms for anyhow? A belly mower?

Yes - and those bolts hold it up - but the vibration will back those bolts out no matter what.
The nuts are welded on the inside and can be stripped - then you drill the nut out and try to get another NUT behind the first one ...... a royal PITA no matter how you hold your mouth!!!!
 

payflint

New member

Equipment
Kubota B7100 HST 4x4
Aug 11, 2021
8
1
3
Northwest Missouri
Yes - and those bolts hold it up - but the vibration will back those bolts out no matter what.
The nuts are welded on the inside and can be stripped - then you drill the nut out and try to get another NUT behind the first one ...... a royal PITA no matter how you hold your mouth!!!!
Thanks for sharing. My thought was that perhaps they caught the deck on something. Have any experience with that? Honestly I'm skeptical. I don't see how it could rip the frame apart like that... These tractors don't have that much power and that's a big chunk of steel... Some people can break anything, far as I can tell the PO must have been one of those people...
 

RichardAaronlx2610

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Equipment
Lx2610 Cab, Fel, Backhoe, Grapple, Box Grader, Forks
Aug 3, 2021
449
502
93
New Jersey
Holy hell that’s an abortion! Take the money you saved and order up a new frame? Lol
 

kubotasam

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B2410, B7100dt, B7500,Woods BH750,Landpride 2660RFM, Tiller, B2781 Snowblower
Apr 26, 2010
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63
Alfred Maine
There is one on Ebay for $199.00
 

Henro

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B2910, BX2200, KX41-2V mini Ex., Beer fridge
May 24, 2019
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Bought this tractor this way for a steal. The frame has been severely damaged somehow and then had a complete hack try to repair. I hope whoever did this is on here and can explain themselves because GOOD GRIEF those welds are terrible! It seems the frame must be slightly warped or bent as well. Trying to source a new part, because I think repairing this one will be futile.

Has anyone ever repaired a frame like this? What do you all suppose might have happened to it?
Well, it is UGLY! But is it not functional? I mean, does the frame not work as intended? Excessive flex or something. Have to look again, but at first look did not notice excessive cracking.

Just curious. If there is not a mechanical issue and just aesthetics, maybe you could just live with it, or get out a grinder, and grind off some of the poor weld and fix it with more weld or a plate added to correct the situation.

No doubt at all that the excessive undercutting should be addressed. Grinding that out a bit and adding a bit more weld there might be enough.
 

kubotasam

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Equipment
B2410, B7100dt, B7500,Woods BH750,Landpride 2660RFM, Tiller, B2781 Snowblower
Apr 26, 2010
1,205
128
63
Alfred Maine
That one's for a gear-drive not HST. I found one from All States Ag Parts that 700 shipped so I've got that coming.
OOPS--- did not notice the tractor was HST.
 

Pau7220

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Equipment
L3650 GST, Landpride TL250 FEL w/ Piranha, 6' King Kutter, GM1084R Finish
Aug 1, 2017
785
279
63
Scranton, PA
Moral of the story is.. if you can't weld good, weld lots!!!
 
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Ikc1990

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Kubota m125x, m9000, b2710, and other equiptment
Dec 2, 2020
292
130
43
Vermont
Mabey bring to they Toyota dealer they are good at frame warranty work lmao sorry had to wow. That isn't even a good bible gun fix that is um... well I'm lost for words...
 
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twomany

Active member

Equipment
B7200
Jul 10, 2017
793
138
43
Vermont
Way over reacting.

It's a freaking tractor!

Does it work? = Good fix
Does it not work" = fix it some more.
 
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payflint

New member

Equipment
Kubota B7100 HST 4x4
Aug 11, 2021
8
1
3
Northwest Missouri
Well, it is UGLY! But is it not functional? I mean, does the frame not work as intended? Excessive flex or something. Have to look again, but at first look did not notice excessive cracking.

Just curious. If there is not a mechanical issue and just aesthetics, maybe you could just live with it, or get out a grinder, and grind off some of the poor weld and fix it with more weld or a plate added to correct the situation.

No doubt at all that the excessive undercutting should be addressed. Grinding that out a bit and adding a bit more weld there might be enough.
At a glance it looks fine, but it's not. Every shaft that runs through this frame section is bound up and I believe that has also caused a slight misalignment of the input shaft and has completely ground away the pilot bushing. Also, their welds were way too hot and undercut really bad and it's cracking in those places (not surprised.)
 

payflint

New member

Equipment
Kubota B7100 HST 4x4
Aug 11, 2021
8
1
3
Northwest Missouri
Way over reacting.

It's a freaking tractor!

Does it work? = Good fix
Does it not work" = fix it some more.
I don't think there's a great way to get everything in alignment perfectly. I could do it, I'm sure. But I don't have that kind of time anymore unfortunately.
 

GeoHorn

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M4700DT, LA1002FEL, Ferguson5-8B Compactor-Roller, 10KDumpTrailer, RTV-X900
May 18, 2018
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Texas
So, Why did you buy it?
 

Chanceywd

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Kubota L2501DT BH77 VIRNIG URG60-CT 1950 8N
Mar 26, 2021
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central ny
Is this where they would break when they have a 3 pt backhoe mounted on them without a subframe?
 
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