General QuestionsGeneral questions related to 1999-2007 Super Duty trucks. If it doesn't fit the other categories, post it here. Gas engine discussion that pertains to all models is allowed. Specific gas engine questions should use the Gas Engines forum.
I had 3 lugs sheer off the other night while running 80 down the interstate. After spending the night outside Napa in the middle of nowhere I got it back on the road the next morning.
I suspected the lug nugs had worn threads and were not holding after a few years of abuse. I started replacing the lugnuts on the other side tonight and broke a wheel stud while using a torque wrench set at 150lbs. I'm wonding if I should replace them all on the front now.
My mechanic friend tells me to only replace them when they have to be replaced. But I think I'd be concerned about stretching the studs, especially with them carrying more of the weight. If it were me, I would err on the side of caution and go ahead and replace the whole set.
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Y2K F250 CC PSD Auto, Short-bed Lariat, Woodland Green/Gold, ordered 07/10/99, born 09/12/99, delivered 10/08/99, Access bed cover, Bed Rug, Zoodad mod, Viper Remote Start Alarm, Fumoto valve, 103K somewhat error-free miles (so far) [never back to dealer for anything]
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2003 VW Jetta TDI auto, 90k miles, all stock, no mods, 41 mpg most days. A rocket in disguise...
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My mechanic friend tells me to only replace them when they have to be replaced. But I think I'd be concerned about stretching the studs, especially with them carrying more of the weight. If it were me, I would err on the side of caution and go ahead and replace the whole set.
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I second that. Better to be safe now than sorry later. [img]/ubbthreads/images/graemlins/cool.gif[/img]
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2004 Ford F150 Super Crew
Vehicle Assembly Tech at
Ford Kentucky Truck Plant
HOME OF THE SUPER DUTY
The studs and lug nuts are not suppose to carry the weight of the truck the hub should with the correct wheel.
The lugs are only to hold the wheel on flat and sandwich the brake rotor inbetween.
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The problem typically when I hear this is that you're using closed end lug nuts with the acorn style seat.
Often the nuts are too short and don't "quite" seat. They are torqued to spec, they bottom out on the stud and don't seat all the way. The wheel is essentially "loose". usually one or more is tight, but that still makes for flex and fatiguing of the studs. Then a few fall off. [img]/ubbthreads/images/graemlins/smile.gif[/img]
Make sure your nuts are deep enough, or open-ended (like stock)
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