How to remove a broken bolt

Posts related to the restoration of Barracuda bikes.
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Posts: 808
Joined: September 23rd, 2010, 12:03 pm
Location: Austin, TX

How to remove a broken bolt

Post 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:
RB01.jpg (210.11 KiB) Viewed 17547 times

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.
RB05.jpg (233.13 KiB) Viewed 17547 times

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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93 A2R blue/white 14" Craigslist Austin, on the cheap
94 A2M silver/white 14" Cenna's Cycles SA, original owner
94 Cuda Comp purple/white 14" won on Ebay
95 XX Team gold/white 14" Craigslist Memphis

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Re: How to remove a broken bolt

Post by Mark »

Nice write-up!

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