Nyla nuts

[rScotty]

I am apparently missing something. Perhaps nylalocks aren't the at the top of the technological pole. I wouldn't argue with that. But the applications shown by both you and the OP are sort of a low tech application and are certainly not subject to much in the way of heat vibration or chemicals. They are very easy to use, extremely unlikely to vibrate off if tightened to where a couple of threads are showing past the end. If they are worn out it is easy to tell because they tighten to easily. Just what makes them so unsuitable for this application?

Hey Coug! I'm a Husky alum so love to argue with you. :laughing:

Agreed on heat and chemicals not being relevant here. Was just talking about limitations. I know something about fasteners. I was, and am not saying this is necessarily a bad application for Nylocs. But the reality is my nuts are working loose (or maybe I have a screw loose and I'm going nuts)... That said, I will bet it is vibration not gravity, thermocycling, or tampering that is the culprit.

Sure good practice is to inspect your equipment frequently but I don't inspect to that detail typically, and one shouldn't have to. These pins shouldn't be removed ever unless a major overhaul. A benefit of self locking nuts/fasteners is that you don't have to routinely inspect. They surely shouldn't be slowly rotating off under normal operation. I have about 450hrs on my tractor. That is low to have nuts rattling off. And how would they be worn out? They haven't been touched since I took ownership, new.

So... I am looking at locking them better than the OEM solution because apparently Nylocs are not good enough, at least for me. Just happy I ran across this thread and inspected my own before I had missing pin(s) and possible resulting damage due to operating the FEL not completely pinned.

I've got them on my M59 in the same application in a couple of places on the loader. Like most owners, I walk around the tractor and just sort of inspect things and look it over every once in a while. And after 1000 hrs the nylocks on mine don't seem to have moved at all. This seems like a decent application for nylocks as keepers.

Anyone else check their loaders?

So far we've only heard from one example where they didn't work. There may be more. But until there is, that doesn't seem like enough evidence one way or the other.

Vibration is tricky stuff; it could easily be that different tractor/loader combinations vibrate differently. With all the analytic tools available, designers still rely heavily on testing for vibration. With so little evidence, this could be vibration, or a faulty set of locknuts & bolts, or just about anything else.
rScotty

 

[ArlyA]

Loader mounting bolts certainly do come loose. Been there, done that. Nylon crown lock nuts work fine. Use them all the time. For a loader, I'd used grade 5 or stronger ones.

 

[Frankenkubota]

 

[Big Barn]

View attachment 670818

IMO ....perfectly fine. Personally, I would have used a shorter bolt and had the nylock a little snugger but only for aesthetics.

OR used a spring roll pin where the hole in the pin would hold the pin tight and the (two) holes in the collar would still be a snug fit but slightly oversized.