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04-17-2015, 10:47 PM | #1 |
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Join Date: Oct 2011
Location: Gloucester VA
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Broke a Flawed Stud in 59AB Deck
Not crying or feeling sorry for myself but this incident is new to me and I thought I'd share. I always use the heat/wax/cool method with studs and had a top-center one crackle and snap at about half of the expected breakaway torque. It broke three threads below the surface and the remains inside the block has a dark spot in the metal somewhat off-center. To me it looks like an impurity in the metal. I guess sometimes stuff happens....to me.
Lonnie |
04-17-2015, 11:58 PM | #2 |
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Re: Broke a Flawed Stud in 59AB Deck
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04-18-2015, 07:37 AM | #3 |
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Re: Broke a Flawed Stud in 59AB Deck
I do this with a normal DC reverse pol elec welder. I do not use a impact wrence but use a combination wrench and carefully twist back and forth feeling the bolt resistance to get it turning out. Works well, have used it to get the bolts out of roller frames on buldozers welding up! I use low hydrogen rods which make a strong weld.
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04-18-2015, 07:51 AM | #4 |
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Re: Broke a Flawed Stud in 59AB Deck
Have done dozens with a tig and haven't been stumped yet. A tig with a foot pedal lets you have much control on the weld.
The first attempt if it breaks off just re weld quench with a wax candle it let it cool to the touch and it will come out. Many have been removed with tig,mig,and a stick welder. R |
04-18-2015, 08:49 AM | #5 |
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Join Date: Jun 2014
Location: Salt Lake City, Utah
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Re: Broke a Flawed Stud in 59AB Deck
x4. I like the washer idea for flush broken studs, should help protect deck. I've been mig welding them and using PB blaster. I do not let them cool to the touch, prefer feel through wrench.
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04-18-2015, 09:51 AM | #6 |
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Re: Broke a Flawed Stud in 59AB Deck
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04-18-2015, 02:32 PM | #7 | |
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Re: Broke a Flawed Stud in 59AB Deck
Quote:
With a tig you can build up the stud to above the deck and do the washer trick.I have done lots like this also,and always get success.The heat is concentrated and doesn't weld the cast iron at all.I usually use 1/16" er70s6 tig rod and extend the tungsten accordingly.Trying it with a mig with 3 threads down the hole may be a crap shoot I don't have a mig to try it with. R Last edited by Ronnie; 04-18-2015 at 06:11 PM. |
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04-18-2015, 07:32 PM | #8 |
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Re: Broke a Flawed Stud in 59AB Deck
i assum the eng is still in the car .if you dont have the welding equpt. you can drill it out . put the head on the block using the good studs to hold it in place. now take a 7/16 drill bit & drill in the hole of the broken stud just drill a little this will give you dead center.whitch is very important. remove head. now. if you can get a drill with a level plate drill a 3/8 hole to end of stud now use a 7/16 std bottoning tap.if you cant get the drill. install head get a thin wall tubing that is 7/16 od place in hole this will serve as a guide then get a bit as close to 3/8 that will fit throught the id.& drill to bottom of stud. now remove head & drill to 3/8. it is very inportant to drill the stud strait take your time.
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04-18-2015, 08:57 PM | #9 |
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Join Date: Oct 2011
Location: Gloucester VA
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Re: Broke a Flawed Stud in 59AB Deck
I do thank you all for your advice! Sure wish I had a TIG with that fine heat control but alas, only a MIG. The hole is blind (top center over the exhaust port) so I'm thinking I'll drill the stud just short of the bottom to relieve pressure then tap in a band of thin copper tubing to protect the threads and fill with MIG with fingers crossed. If all goes well I'll do the washer/nut.
Lonnie |
04-19-2015, 09:34 AM | #10 | |
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Re: Broke a Flawed Stud in 59AB Deck
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04-19-2015, 10:02 AM | #11 | |
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Re: Broke a Flawed Stud in 59AB Deck
Quote:
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04-19-2015, 03:27 PM | #12 |
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Re: Broke a Flawed Stud in 59AB Deck
Maybe a piece of stainless tubing instead of copper? It would be thinner wall and allow more weld area. I'm just thinking off the top of my head as well.
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04-19-2015, 08:09 PM | #13 |
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Re: Broke a Flawed Stud in 59AB Deck
Some fellows are way over thinking this operation.I have done too many of these studs and just follow the advice,from members that have done it.The operation will be a success.There is no reason to try and invent the wheel.You don't need an tubing down the hole at all.I can see that a few posters giving advice really haven't removed any studs at all.
R |
04-19-2015, 08:55 PM | #14 |
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Location: Elgin Illinois
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Re: Broke a Flawed Stud in 59AB Deck
Never ever use easy outs, you will always regret doing so! I have been there more than once!
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