Join Date: May 2005
Location: Detroit Michigan
McGard Lug Nut Failure
Yesterday evening, just before dark, I noticed that the pin that is inserted into the swingarm of the rear bumper (Body Armor) was up about 1/2". This morning I checked it out; it was too tight to be forced back into position even with a fairly large hammer. Figuring that removing the spare tire would lower the weight on the arm I tried to remove the spare. The McGard lock nut literally sheared off when I used the key in a four way lug wrench! I've never seen that before - the lug nut was rusted clear through.
After liberal doses of penetrating oil, and notching the remaining part of the lug nut with a cold chisel I was able to get enough of a grip with vicegrips and unscrew the remains of the lug nut.
Once I had that piece off the other two standard lug nuts were easily removed, the spare came down and I was able to fully insert the pin back into the swing arm. (I took the opportunity for tightening the bumper up a bit. Nice and snug now, no rattles).
I'll be contacting McGard on this one...they aren't terrific for locking wheels, but do at least slow the thieves down - but the lousy things shouldn't rust in half in 18 months, even in Michigan weather.
"Basically, I'm for anything that gets you through the night - be it prayer, tranquilizers or a bottle of Jack Daniels.” - Frank Sinatra
"When the last Blackhawk helicopter goes to the boneyard, it will be on a sling under a Huey." - Every Huey pilot that lived through it.
'95 YJ, '00 XJ, '06 TJ, (Current:) '08 XK