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Welding question - quick one, safely grounding on

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Billy NY

07-11-2006 10:15:24




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Parts came in for the exhaust on my old F-600, have one broken exh. manifold bolt, funny how the rest came out easy, and I think I've got enough to let a nut hang on what is sticking out, I think I will weld the nut to the broken bolt, hoping the heat and grip I'll get will help carefully work that bolt out.

Question is, if I clamp off on an adjacent bolt, will that be close enough to avoid stray voltage from arcing, say like connecting rods and bearings below which I know can happen if you are not careful. I'm thinking this should not be a problem if grounded close to the work, this old Y-block 292 runs good, lot of oil pressure etc. don't want to screw it up if you know what I mean, I'll try other methods if too risky. Thanks again !

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Billy NY

07-11-2006 18:59:41




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 Re: Welding question - quick one, safely grounding in reply to Billy NY, 07-11-2006 10:15:24  
Well, I took a longer bolt, and installed it 1 hole down, clamped off, disconnected the positive on the battery, unplugged the voltage regulator and took the positive off the alternator, the other wires were a pain to put on, however the positive on the alternator, had loop crimp on connector, it was soon to fail, crumbled when I took it off, double good call Old, hopefully that ground sufficed, dragged my welder out there, while doing so, ran into my wooden tray tool box with a file sticking out, popped the tire on the Miller NY 251, my luck, all that for a tack weld, used channel locks on the welded nut, couple of twists and it was out, was not fused in there at all, suprised it snapped, so that's done, time to put er back together soon, can't wait to hear a nice quiet exhaust !

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old

07-11-2006 10:37:49




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 Re: Welding question - quick one, safely grounding in reply to Billy NY, 07-11-2006 10:15:24  
Its still a good idea to unhook the battery and the alternator just to be on the safe side. I have heard of burning out and alternator that way and fring a battery. I have never had it happen but have heard that others have had that problem.



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Billy NY

07-11-2006 11:19:05




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 Re: Welding question - quick one, safely grounding in reply to old, 07-11-2006 10:37:49  
Good call on that one Old, I just put in a new Alt. and voltage regulator, pesky electircal problem had been draining my battery dead, replaced those parts and no more problems, don't need to do that over again though, don't think I'd have thought to disconnect everything, glad i asked here as always, much appreciated !!!



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RustyFarmall

07-11-2006 11:14:28




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 Re: Welding question - quick one, safely grounding in reply to old, 07-11-2006 10:37:49  
Excellent advice. I failed to mention that.



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old

07-11-2006 11:35:12




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 Re: Welding question - quick one, safely grounding in reply to RustyFarmall, 07-11-2006 11:14:28  
Well as I said I haven't ever had a problem when welding on a tractor/car/truck but have heard of it happening. Of course in theory you shouldn't be able to burn something up like that but, it never hurts to be safe



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RustyFarmall

07-11-2006 13:16:11




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 Re: Welding question - quick one, safely grounding in reply to old, 07-11-2006 11:35:12  
Old, strange things do happen. Many years ago I was helping a friend modify the exhaust on his '70 Nova. We didn't have a cutting torch, so we used the arc welder to cut the pipes off. When we got done, we found that the tailights and turn signals didn't work. The fuse was blown.



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RustyFarmall

07-11-2006 10:29:40




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 Re: Welding question - quick one, safely grounding in reply to Billy NY, 07-11-2006 10:15:24  
You've got the right idea. Putting the ground clamp on an adjacent bolt, as close as possible to your where the welding will take place, should pretty much eliminate the chances of stray voltage.



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Billy NY

07-11-2006 11:21:42




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 Re: Welding question - quick one, safely grounding in reply to RustyFarmall, 07-11-2006 10:29:40  
Gotche, thought someone had told me this before, just stay close to the work, it's just a tack anyways, not like the work I did on the frame, so a few arcs and it's done, ground on the next bolt over and disconnect the elect. items per what Old suggests, should be good to go. Thanks Again !



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