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Old 05-27-2012, 03:17 PM   #1
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Broken off bolt


Hoping someone here can help. Broke a bolt inside part of my elliptical. Tried using a spiral screw extractor with no luck. Any other suggestions would be appreciated. Picturs show location of broken off bolt, size of bolt, and extractor.

Steve
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Broken off bolt-image-259093860.jpg   Broken off bolt-image-1492065735.jpg   Broken off bolt-image-3379766042.jpg  

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Old 05-27-2012, 03:52 PM   #2
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Broken off bolt


Quote:
Originally Posted by gerardswork View Post
Broke a bolt...
Tried using a spiral screw extractor with no luck.
Did you drill a hole into the bolt first?

Cutting to the chase...
Can you buy the part that bolt is attached to? Is it expensive?
Is it a serious PITA to replace?

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Old 05-27-2012, 03:57 PM   #3
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Broken off bolt


Make sure the extractor is the proper size. You could also attempt to drill out the remaining threads using a drill that is slightly smaller. It is hard to keep the drill straight though, and it could cause further damage.
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Old 05-27-2012, 04:53 PM   #4
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Broken off bolt


Thanks for the replies...the part is the main connector to flywheel...no chance of replacing that....the directions said to drill a pilot hole...so i just drilled in a little bit...or should i drill the hole all the way through first?

If that still doesnt work...any other suggestions?
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Old 05-27-2012, 04:54 PM   #5
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Broken off bolt


@618... Do you mean basically just try and drill out the bolt...basically disintegrating it?
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Old 05-27-2012, 05:07 PM   #6
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Broken off bolt


That was the plan. It is very risky, as you could damage the remaining threads or other parts. I would make another attempt with the extractor first if I were you. Follow the package directions exactly and make sure you are using the correct size.
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Old 05-27-2012, 05:09 PM   #7
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Broken off bolt


Some bolts connecting to flywheels are left hand thread. This is so they tighten rather than loosen, depending on the rotation direction.
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Old 05-27-2012, 06:15 PM   #8
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Broken off bolt


Quote:
Originally Posted by gerardswork View Post
@618... Do you mean basically just try and drill out the bolt...basically disintegrating it?


Thats to risky,try extracting at all costs,here's a link that might help.


http://www.wikihow.com/Use-a-Screw-Extractor
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Old 05-27-2012, 07:42 PM   #9
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Broken off bolt


yup, you have to pre drill first for the extractor to "bite in". If the drill "walks", try a nail punch in the center of the broken bolt....
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Old 05-27-2012, 08:03 PM   #10
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Broken off bolt


Quote:
Originally Posted by noquacks View Post
yup, you have to pre drill first for the extractor to "bite in". If the drill "walks", try a nail punch in the center of the broken bolt....

try a nail punch in the center of the broken bolt.

I think you meant a 'center punch' !
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Old 05-28-2012, 08:13 AM   #11
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Broken off bolt


the pic is crappy. but it looks like you didn't drill the hole big enough.
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Old 05-28-2012, 10:53 AM   #12
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Broken off bolt


The hole in the bolt MUST go all the way thru. That helps relaease the tension on the bolt and allows it to shrink a little. The extractor should be as large as possible, as should the hole. Warning: If the extractor breaks off in the hole, your day just got MUCH worse. Try the extractor gently. If it doesn't work, quit. Drill the hole to the correct TAP size, and use a tap to break out the remaining metal. You may still end up installing an insert (heli-coil or time-sert). If that's the case, try taking the part to a good auto mechanic. They usually get good at this stuff. Figure paying for about an hour's work.
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Old 05-28-2012, 11:12 AM   #13
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Quote:
Originally Posted by Wildie View Post
try a nail punch in the center of the broken bolt.

I think you meant a 'center punch' !
right- thanks wilde....
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Old 05-28-2012, 01:05 PM   #14
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Broken off bolt


Maybe im not pushing hard enough....but drilling the hole is taking forever...are there any tips or strategies when trying to drill the hole...ive been at it for 15 minutes and dont feel like im making progress.
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Old 05-28-2012, 01:29 PM   #15
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Broken off bolt


What diameter are you trying drill?

Are you using a "new" bit made for drilling steel?

The drill is set on forward, right?

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