B2301 / LA435 - Sheared threads out of pin locking nut

[amanfromthere]

Around 100 hours in, I went around and checked all the bolts for tightness. About half of the pins (

http://imgur.com/CJBplSB

) on the loader frame (LA435) just would not tighten all the way, they kept spinning. Also one of the pins on the quick attach (

http://imgur.com/j33RYVx

) that I don't know how to remove. I pulled one out of the frame and was shocked to see that the threads on the lock nut were just totally gone. The bolts themselves look brand new.

http://imgur.com/VM946V9

Waiting to hear back from the dealer still, but not really sure what to make of this. What could I possibly be doing to cause that to happen? I bought some new lock nuts, but I don't know how to remove the ones on the quick attach.

 

[mcfarmall]

I call them "butternuts" because the threads are soft as butter. My loader pins are different, cross drilled through a boss on the loader frame itself. My owners manual states that the nuts are not supposed to be tightened down securely but only to be tightened down until a 3mm or so gap remains between the nut and the loader pin boss. Your manual may state otherwise, best to check it for sure.

 

[amanfromthere]

I call them "butternuts" because the threads are soft as butter. My loader pins are different, cross drilled through a boss on the loader frame itself. My owners manual states that the nuts are not supposed to be tightened down securely but only to be tightened down until a 3mm or so gap remains between the nut and the loader pin boss. Your manual may state otherwise, best to check it for sure.

I don't see anything in the manual that references these specifically unfortunately. Even the maintenance guide only says to check the frame mounting/attachment bolts.