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Is impact wrench better for loosening rusty nuts ?

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Farmer Brown

12-20-2002 08:05:40




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I need to change a tire on an old wagon with 5 rusty lug nuts. I have twisted one off and have been soaking the others for several days with PB Blaster. Would an impact wrench work better than a cross wrench for loosening them up with out twisting off another stud ?




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richard

12-28-2002 15:55:11




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 Re: Is impact wrench better for loosening rusty nuts ? in reply to Farmer Brown, 12-20-2002 08:05:40  
heat is the best way to brak any rusted bolt.



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d3Mike

12-26-2002 17:12:39




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 Re: Is impact wrench better for loosening rusty nuts ? in reply to Farmer Brown, 12-20-2002 08:05:40  
To loosen a rusty nut, place a socket or pipe, that fits over the stud but is smaller than the nut, over the stud and rap it sharply with a long barrel air hammer or hammer, then use the impact on it. Good Luck, Mike



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Trucker

12-23-2002 19:29:12




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 Re: Is impact wrench better for loosening rusty nuts ? in reply to Farmer Brown, 12-20-2002 08:05:40  
If there are threads sticking out of the nut,clean them with a wire brush first,then spray penetrating oil on them,hit them with the impact.If it doesnt break loose real good then,turns slow,run it back on and clean the threads again,more oil,then it will probobly come off without breaking.As long as the impact spins it good,its probobly going to come off.If you have an old nut,maybe if you can get the nut off the broke off stud,you can cut a couple of grooves across the threads with a hacksaw blade,screw it on with a wrench and it will clean the threads,then it will come off easy.Only works if stud is sticking out of the nut far enough to screw on the thread chaser.

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Slowpoke

12-20-2002 15:35:19




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 Re: Is impact wrench better for loosening rusty nuts ? in reply to Farmer Brown, 12-20-2002 08:05:40  
I'd use a hand wrench, penetrating oil, tighten a bit first, then loosen, tighten, loosen, etc. Keep the oil flowing. Unless the bolt is rusted thru, that usually works for me.



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Nolan

12-20-2002 08:47:24




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 Re: Is impact wrench better for loosening rusty nuts ? in reply to Farmer Brown, 12-20-2002 08:05:40  
Yes. The imact action is far more likely to fracture the rust bond. And, as another mentioned, heat works wonders as well.



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Rod MI

12-20-2002 08:39:02




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 Re: Is impact wrench better for loosening rusty nuts ? in reply to Farmer Brown, 12-20-2002 08:05:40  
try to heat them then use the impact



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RayP(MI)

12-20-2002 17:00:26




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 Re: Re: Is impact wrench better for loosening rusty nuts ? in reply to Rod MI, 12-20-2002 08:39:02  
Heating will help, even if all you have is a little propane torch - don't have to heat things to REDHOT, contrary to popular opinion. Then try impact wrench set on weak setting - try bumping it a few times both on and off to loosten rust/corrrosion before whaling on it. You can't go wrong using a good penitrant as you are doing.



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