Question: will an impact wrench remove fasteners without destroying them that a breaker bar cannot?
Here’s the background. 2005 Explorer went in to the dealer last summer for some exhaust work, dealer said all four struts needed to be replaced, I said OK. Dealer said he could not replace RR strut, as they could not get wheel off. Said they tried breaker bar with pipe extension, no luck. I found that a bit tough to take, as car had had tires replaced six months previously. Why they didn’t use impact gun to loosen I don’t know.
Next time car was in, I asked them to please make sure all lug nuts could be removed. Obviously, the last thing I wanted was to be stuck on the road in the middle of nowhere with a flat and no way to change it. They said they had loosened and re-tightened all lug nuts, and all were fine.
Month later, I wanted to check the emergency brake shoes. RR lug nuts again a problem. Too tight to loosen with a large four-way wrench. Tried a breaker bar with a pipe on it, but worried it would bend. So I went down to HF, bought their heaviest breaker bar - 36”, 3/4” drive. Had to turn down a six-point impact socket to fit into the wheel. Got the wheel off, but broke two studs in the process. Went back to the dealer. They were embarrassed and replaced the studs, no charge.
When I got the car back, I loosened and tightened all of the lug nuts just to be sure. I put Never-Seez on them. Yeah, I know they don’t recommend it, but I don’t mind checking them periodically.
Which all made me wonder - if I had used an impact gun rather than the breaker bar to remove the frozen lug nuts, would those studs likely have snapped?