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Old 04-23-07, 07:30 AM   #1
Toxanadu
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How to remove stripped crank?

yup, i did it. I stripped my crank threads trying to put my crank puller on. so how do i get the crank off now? I do intend to use the crank arm, bb, and frame again on a different bike.
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Old 04-23-07, 08:34 AM   #2
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Quote:
Originally Posted by Toxanadu
yup, i did it. I stripped my crank threads trying to put my crank puller on. so how do i get the crank off now? I do intend to use the crank arm, bb, and frame again on a different bike.
You have three things working against you:

Stripped crank thread AND non-destructive removal AND want to reuse.

Your best bet is to find a gear puller (similar to: http://doitbest.com/DoItBest/Main.as...e=Gear+puller). The arms need to grab the crank arm and the center bolt needs to push against the spindle. There are numersous brands/configuration, but I cannot recommend one that will fit your components.

If you have square taper, Park tool says: (http://www.parktool.com/repair/readhowto.asp?id=136).

If you reuse the crank arm, you will have the same problem again.

At worst, you've probably learned a valuable lesson (and we all have our share). Remember, "experience is the teacher who gives the final exam first".
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Old 10-15-07, 06:29 AM   #3
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LBS will have a tool that reams out those threads and re-taps for a larger size, just one catch, every time you want to take that crank off you'll have to use the shops over sized puller.
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Old 10-15-07, 06:36 AM   #4
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Three leg puller, like this one, available cheaply from discount tool shops. I've used mine a couple of times for this, and it does the job quite well.

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Old 10-15-07, 07:44 AM   #5
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Two weeks ago I had a similar issue with my crank. I was replacing it anyway, so I took the angle grinder to it. Made for some fine fireworks. Crank came off without issue
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Old 10-15-07, 09:50 AM   #6
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This thread is 6 months old!

I'm sure the OP has either solved his problem or given up.
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Old 10-15-07, 02:17 PM   #7
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Wow - who brought this back to the top? Shows how much attention I pay....
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Old 10-15-07, 06:23 PM   #8
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ok this is the way to do it... grab a piece of wood and a big hammer. Just wang the wood in the back of the crank (nearby the axle obviously) with the hammer and sooner or later that will come out. If u have 5 arms just one hit around each arm. It will get lose but the crank for sure will get scratching marks, thats the only down side of it. well u cant use the cranks anyways so who cares... right?

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