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Restoration & Repair Tips Board

broken stud

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jaybird Oh.

04-06-2004 07:37:05




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I have a starter bolt that snapped off at the nut so after the starter was removed there is one inch of stud left to grip with vise grips. The stud is threaded into an aluminum housing. Before I go any farther I'm looking for suggestions since I'll probably only get one shot at it. Thanks for any help. jaybird




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txblu

04-08-2004 06:02:33




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 Re: broken stud in reply to jaybird Oh., 04-06-2004 07:37:05  
The torch melts Fe (IRON) in the steel. There is no iron in aluminum. That's why cutting stainless is a problem also. Not much iron if any.

txblu



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youngster

04-07-2004 18:21:15




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 Re: broken stud in reply to jaybird Oh., 04-06-2004 07:37:05  
if ther is an open hole behind it you drill a small hole and blow it out with a torch.



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Joe (Wa)

04-07-2004 19:32:22




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 Re: Re: broken stud in reply to youngster, 04-07-2004 18:21:15  
He is dealing with a steel? bolt in an aluminum housing. I don't think you want to try blowing it out with a torch.

Joe



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youngster

04-07-2004 19:37:32




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 Re: Re: Re: broken stud in reply to Joe (Wa), 04-07-2004 19:32:22  
wow what an idiot i am were did i get the idea hge was dealin with steel in cast. sorry guys my mistake.



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Joe (Wa)

04-07-2004 21:57:55




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 Re: Re: Re: Re: broken stud in reply to youngster, 04-07-2004 19:37:32  
Nope, you are not an idiot, the word aluminum in the original post just didn't catch your eyeball.

I've blown some bolts out just as you said and it was the last resort.

MJ's post covers everything and in the right order.

Joe



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mj

04-08-2004 11:17:50




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 Re: Re: Re: Re: Re: broken stud in reply to Joe (Wa), 04-07-2004 21:57:55  
Thanks, Joe...Since I thought we were dealing with aluminum I left out the 'blow it out with a torch' trick.....an air-arc also works good on stuff like broken-off wheel studs or anything ferrous in ferrous. If you can get a whole nut on it the spit-nut and Vise-Grips� usually will turn it out or break the stud. One more thing: if the split nut slips take it off then prep and Loc-Tite� (red) the stud and nut and have another go!

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mj

04-07-2004 08:52:40




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 Re: broken stud in reply to jaybird Oh., 04-06-2004 07:37:05  
Before I weld a nut on a broken stud I try this: Cut through one side of a nut of the appropriate size on one of the flats. Thread the nut onto the stud and lock a pair of 10R Vise-Grips� onto the nut across the points of the nut with the cut centered between the pliers' jaws and apply slow, steady pressure. This usually gets the job done. If not, weld on a nut and try that. If the stud breaks off center-punch it (heavy on the CENTER) and begin drilling with a left-hand twist drill bit which, most of the time, will begin unscrewing the stud before it holes through. If it doesn't you have a hole ready for an Eze-Out�. If that fails then select a drill that will match the root size of the threads and drill again; then use a sharp prick-punch to clear the remainder of the stud. If this fails, drill to the specified size for the HeliCoil� you just bought! :-)

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Jeff-oh

04-06-2004 14:33:13




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 Re: broken stud in reply to jaybird Oh., 04-06-2004 07:37:05  
Jaybird,

Are you from Jaybird Ohio?



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jaybird

04-06-2004 20:56:21




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 Re: Re: broken stud in reply to Jeff-oh, 04-06-2004 14:33:13  
I'm in northern Ohio on Lake Erie where road salt is an inch thick all winter.



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Jeff-oh

04-07-2004 07:15:10




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 Re: Re: Re: broken stud in reply to jaybird, 04-06-2004 20:56:21  
just wondering, Jaybird is a little cross roads town down south in Adams Co. near where I live.



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Jerry B

04-06-2004 12:34:44




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 Re: broken stud in reply to jaybird Oh., 04-06-2004 07:37:05  
Place a large nut over the "stud". Use a welder and weld the nut to the stud with plenty of amps to make lot of heat. Don't be afraid the get the nut and stud bright red.

Let the area cool until the color goes away. Use a wet rag and cool the nut, just the nut and only the nut until it has a small amount of steam rising.

Use a wrench to remove the "stud". Let the aluminum cool slowly by itself.

Works every time.

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jaybird

04-06-2004 20:48:45




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 Re: Re: broken stud in reply to Jerry B, 04-06-2004 12:34:44  
The welded nut idea sounds good to me,I'll give it a try. Thanks



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