Friends ck25 broke in two

[Northland]

Ide say its back to the drawing board for Kioti to build a stronger/stiffer tie frame to marry it all together . The one they have is obviously flexing and the cast iron casing does not .

Maybe they used recycled steel in the making of the frame?

My brother, who is a metallurgical engineer with a steel manufacturer, once told me the Japanese cars rusted out up here in Canada (where we use salt on the roads in winter) back in the 70/80's because they used recycled steel as it was cheaper.

 

[Mastertech]

Even the Delorean's rotted out here in Michigan and they were made of stainless steel

 

[Gittyup]

As I understand it, something like 80% of all steel used today is recycled steel.

 

[Rockman]

well, i'm in halifax, virginia, south central virginia, i work in henderson, NC. the owner lives in warrenton county NC. i'm not familiar with the dealer.....but again i can find out for you.

The nearest dealer to Warrenton NC is Shorts in Henderson, US RT. #1 and Warrenton rd. Ron the owner is a very good guy, I'm sure he will do everything he can to resolve the problem.

I just checked the manual for my 2365 backhoe, it does say NOT to operate the hoe ith the rear wheels off the ground, BUT, in the context it is written, my understanding is because (in their minds, probably due to liability) it is a safety issue.

As far as that case breaking, Now let me say up front after being around all types of heavy equipment all my life (almost 50 years) from skidsteer loaders to very large mining equipment, I would say that break was caused by pulling with the hoe hard enough to pull the front end of the tractor off the ground and DROPPING it. I could be wrong , I'll wait to see what the experts say before I'd bet on it though.

 

[TractorLegend]

I'm wondering,,,,,,, if Thingys back???,,,,,,,,,,,

 

[coobie]

I'm wondering,,,,,,, if Thingys back???,,,,,,,,,,,

??? What did I miss?coobie

 

[Northland]

As I understand it, something like 80% of all steel used today is recycled steel.

yes, that is true-I should have written "poor quality" steel

 

[IslandTractor]

yes, that is true-I should have written "poor quality" steel

Korea has some of the most modern and largest steel mills in the world. In 2008, excepting exotic alloys, they probably make equal or better steel than either the Japanese or we do. I don't think there is any reason to think the basic steel quality is likely to be the issue.

 

[dfkrug]

The manuals for Woods backhoes state to keep the tires just off of the ground.
You want to keep the tractor low for a bigger footprint, but the weight needs to be off the tires.

I just checked the manual for the Woods 7500 backhoe, of which my
Prairie Dog hoe is a copy, and it says to support the weight of the tractor on
the outriggers and loader bucket. It does not say lift the wheels off the
ground. Of all the manuals for CUT backhoe attachments that I have seen,
none say to lift the wheels off the ground. Some are mute on the subject
and I certainly have not seen a manual from each manufacturer out there.

As pointed out in this thread, commercial hoes like Case 580s or even my
little B21 are clearly different. Lifting them off their wheels is preferred, but
their support frames are extremely stiff. Unlike even OEM subframes for CUT
hoe ATTACHMENTs.

I have designed and built my CK30 subframe to be as stiff as possible, but
it certainly has a bit of flex, esp when pulling on something as hard as
possible. I have tried other CUTs w/ subframe-mounted hoes, and some
flex a LOT, even if designed by the tractor manufacturer. One TBN member
I recall thought that these subframes were intended to flex. I doubt that.

I still think that the hardest use of any hoe is stump removal. Maximum
force, suddenly released. This can cause what ROCKMAN points out:
lifting and dropping. Bad.

RHUD....thanks for posting! My guess is a defective casting, but abuse
could have done it, too. There are thousands of CKs out there by now,
and this is the first failure of this type I have heard of.

 

[WSJ]

Wow. I've got a CK25 with a KL130 and Kioti 2365 hoe, so as you can imagine I'm intensely interested in what broke what and why and what I need to do or know to keep it from happening to me.

Any update on what may have happened?

Rick Wallace: Any ideas, given the information to date?

As for backhoe operation, my manual is very clear that you shouldn't operate the backhoe with the rear tractor wheels off the ground, supported by the stabilizers, apparently a different procedure than is common on real TLB's.

-WSJ