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How to remove a broken bolt

Posted: December 21st, 2012, 1:06 am
by mixalive
Here is a little instructional on how to remove a broken bolt. You can see the head of the crown pinch bolt is missing on the Marzocchi steerer. You can’t ride around like that.. :shock:
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First, take a center punch and make an indentation in the center of the bolt. This is to help keep the drill bit centered in the next step.
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Drill the bolt initially with a small drill bit.
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Follow up with the recommended drill bit for the bolt extractor.
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I put my bolt extractor in a tap T-handle. Give it a few taps with a hammer into the hole and you are ready for extraction.
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If it doesn’t want to come out, you could apply heat to the extractor. This would tighten up the extractor and loosen up the bolt.
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And, the broken bolt comes out..
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Re: How to remove a broken bolt

Posted: December 25th, 2012, 1:04 pm
by Mark
Nice write-up!