well we just took the tractor back to dealer we bought from. Looking at the sub frame we found one weld on each side was broke, not saying this was cause . This may have been from after bolts came out and crack housing. So I will wait till I speak with dealer again before I say to much more.. Sean owner of the shop is going to make it all right one way or another. I do believe woods will be involved in looking it all over.. Sorry for delay, I have been busy and well it was just today we got tractor where it should be.. I was not able to get pics, I will look for another way to show you all what I am talking about.. So it may be a few days till I hear something from Sean so we will wait.. On another note the other dealer will not be getting my business in the future.
It seems like all will be resolved and you have a good dealer.
It will be interesting to hear what they determine to be the verdict as to the root cause. As you said, did the bolts come out and break the weld, or did the weld break and pull out the bolts?
Whatever the case, this seems like another reminder to regularly check for loose hardware--particularly for major components (such as loaders, backhoes) that attach into the frame. That reminds me--I haven't thoroughly checked mine the last few times!
No doubt this is obvious to more knowledgable TBN members who grew up operating equipment, but something "hobby operators" (like me) can learn the "easy way" through experienced members' advice.
Since we focus on a tractor's operating manual, we may miss requirements for added equipment. For example, we purchase a tractor with a loader and may not thoroughly read the loader's manual. The Kioti KL 401/351 loader manual says to visually check loader mount hardware "Daily/10 hours" and to
re-torque every 25 hours.
I may have missed or played-down this requirement if it weren't for an incident when I took delivery of my tractor. The dealer was fixing a DK90 where the owner had found loose loader bolts, retightened them with a 3/4" impact wrench, and broke off some heads. He wanted it repaired under warranty. I don't know what the decision was on that.
The incident made me aware of the checking/re-torquing requirement. I have 200 hrs on the machine and found a bolt or two that turned slightly (i.e. not loose) during the first few checks. I discussed it with the dealer and he said they are now installing loaders with blue threadlocker/loctite. I reinstalled all my loader frame-to-casting bolts with blue loctite.