Did something bad ... bolt broke off
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Cruiser
Joined: Feb 2008
Posts: 156
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Did something bad ... bolt broke off
I was putting the inner primary back on ... torque wrench didn't do it's thing and I broke one of the bolts off ... it is about an inch or more inside. Ideas anyone ... will I need to take this in to someone to get that bolt out or is there an option?
Road Master
Joined: Aug 2008
Posts: 1,027
Likes: 163
From: Grapevine Texas
I deal with this a good deal at work, if you haven't had much practice with it, it's intimmidating. Don't know what size for sure the bolt you broke off but me personally I would spray the remaining portion of bolt real good, and let soak with a good penetrating oil, wd40 if you have nothing else but you can find much better penetrating oils. Drill the center of remaining bolt with 40 drill bit, and get a good ezout bolt extractor kit, there are several kinds of kits, I've used some from craftsman, pretty decent, also have some at work, kind of spirl twist in em, work pretty good, but try to steer away from a walmart 2.99 taiwaan crap. Tap ez out into drilled hole, spray some more penetrating oil in there, and while turning tap with a hammer, and should turn/vibratethat sucker out of there. That's how I do all of mine, and never had to give one up to machine shop yet.
Good LUck.
Good LUck.
Thread Starter
|
Cruiser
Joined: Feb 2008
Posts: 156
Likes: 0
I deal with this a good deal at work, if you haven't had much practice with it, it's intimmidating. Don't know what size for sure the bolt you broke off but me personally I would spray the remaining portion of bolt real good, and let soak with a good penetrating oil, wd40 if you have nothing else but you can find much better penetrating oils. Drill the center of remaining bolt with 40 drill bit, and get a good ezout bolt extractor kit, there are several kinds of kits, I've used some from craftsman, pretty decent, also have some at work, kind of spirl twist in em, work pretty good, but try to steer away from a walmart 2.99 taiwaan crap. Tap ez out into drilled hole, spray some more penetrating oil in there, and while turning tap with a hammer, and should turn/vibratethat sucker out of there. That's how I do all of mine, and never had to give one up to machine shop yet.
Good LUck.
Good LUck.
Road Master
Joined: Aug 2008
Posts: 1,027
Likes: 163
From: Grapevine Texas
NO, it will not scew it up,
the key is to drill a small hole in the center of the broken stud, and typically about 1/4 into the broken stud. Notice I said a number 40 drill bit, that's usually where I start or might work up to a number 30 drill bit if I'm dealing with a typical bolt say 1/4, 5/16 which are usually what were dealing with on our bikes.
Also you need to make sure and drill straight into the bolt, not cockeyed or at an angle, this is why I said a 40 drill bit. If you use a bigger bit and go at an angle then you take the chance of damageing the threads when extracting broken screw out, in that case you open up a can of worms because you would either have to retap the hole or put in a helicoil.
Another reason I mention get some good ezouts is cheaper ones break when you try and turn em out, I've done it in a pinch, and I won't do it again, because they are a **** to dill back out.
By the way as I am writing this I found a quick article that has some pics and additional info, check it out and I think you'll find with a little patience you can fix it up and get it back together.
I notice they mention heat, I also have used that in very stubborn cases, you gotta torch, don't need a welder just a good butane to throw heat on there, but your not dealing with tighter than hell, rusted out, areas, at least your primary shouldn't be anyway.
http://www.asashop.org/autoinc/may2003/techtotech.htm
the key is to drill a small hole in the center of the broken stud, and typically about 1/4 into the broken stud. Notice I said a number 40 drill bit, that's usually where I start or might work up to a number 30 drill bit if I'm dealing with a typical bolt say 1/4, 5/16 which are usually what were dealing with on our bikes.
Also you need to make sure and drill straight into the bolt, not cockeyed or at an angle, this is why I said a 40 drill bit. If you use a bigger bit and go at an angle then you take the chance of damageing the threads when extracting broken screw out, in that case you open up a can of worms because you would either have to retap the hole or put in a helicoil.
Another reason I mention get some good ezouts is cheaper ones break when you try and turn em out, I've done it in a pinch, and I won't do it again, because they are a **** to dill back out.
By the way as I am writing this I found a quick article that has some pics and additional info, check it out and I think you'll find with a little patience you can fix it up and get it back together.
I notice they mention heat, I also have used that in very stubborn cases, you gotta torch, don't need a welder just a good butane to throw heat on there, but your not dealing with tighter than hell, rusted out, areas, at least your primary shouldn't be anyway.
http://www.asashop.org/autoinc/may2003/techtotech.htm
Banned
Joined: Mar 2008
Posts: 703
Likes: 1
make sure you center punch the bolt, before you drill invest in a good carbide bit and a carbide extractor,i buy my bits and extractors from a motor supply company and belive me they are worth the extra money when it comes to getting broken and frozen bolts out.
Outstanding HDF Member
Joined: Oct 2009
Posts: 2,639
Likes: 2
From: Scottsboro
+2 on cactusred... I start with a needlt size bit to get as close to center as possibel. Be careful and you should be ok! That is the only was to learn
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Road Captain
Joined: Jul 2009
Posts: 523
Likes: 4
From: New York
A word of caution here, don't get overly aggresive with the e-z out. If it snaps off, and that's real eazy to do, your in Bigger trouble. Keep an eye on the shaft of the e-z out as you work with it. If you see the shaft starting to twist slightly stop before it snaps off, your applying to much pressure . I have a set of e-z outs that are short and stubby with a large diameter hex end for use with a socket or a wrench. not as easy to keep an eye on the business end but easier to work with. Although this type doesn't sound like it will work for you if the remants of the bolt are recessed 1 inch.
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I never use easy outs, they snap too much, snapped bolts are all different, do you have a picture of what it looks like so that i can sugest some ways of removal? did you use loc tite on it first? if so how long has it had to set up?
Road Master
Joined: Nov 2009
Posts: 1,218
Likes: 0
From: Yakima WA
Best of luck with your project.