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Old 08-26-2017, 11:02 PM   #2
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
Re: Alternator bolt broken off in head

If you have a wirefeed, I would build up the end of the bolt using multiple 'tacks' until you build it up enough to be able to weld a nut onto it. Otherwise, you will likely just have to drill it out. Start with say a 3/16" bit and work your way up until all you have left is the threads and then pick them out and run a tap in the hole. I know easier said than done.
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