Quote:
Originally Posted by Kurbski
Today, one of my coworkers heard a "clunk,clunk,clunk" noise while moving our truck out of it's bay. Then came inside and said "we got a problem". So I go out and they removed the wheel cover from our left front tire. I see 3 out of 10 lugs sheared off with one rolling around in the cover.The three lugs were in sequence. Two studs were shiney, one was dirty. So one had been gone for a while. Im not naming names and will just say this. We have the best equipment money can buy and change out tires at 6/32, so maintenance is not a problem. I have never seen three lugs sheared off like this. No prior vibrations in the cab, damage to the wheel and it has not been in an accident.
So I am curious if anyone else has ever seen this type of a problem?
And what could have caused it?
Are they Unimount wheels?
I've seen a couple instances (on dump trucks)where all 10 studs have failed and wheels have come off.
How old is the truck?
Could be metal fatigue from repeated tire changing (some tire guys just love to overtorque the lug nuts).
If they're Unimounts, just hammer out all the studs with a good sized sledge, then put in all new studs and draw them into the hub by putting a nut on each stud and using an air impact wrench to tighten the nuts, which will "press" the studs into the hub holes. Then remove the nuts and install the drum and wheels.
Be sure to properly tighten the lug nuts.
No need to pull the hub to replace Unimount studs.
Be sure to replace all 10 studs. If 3 have failed, the other 7 probably aren't far behind.