crank removal tool stripped my thread, now what?

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crank removal tool stripped my thread, now what?

Postby ashsimmonds » Fri Apr 06, 2007 3:05 pm

:cry: :cry: :cry:

removing the cranks on my CRX4, the left one came off alright, then thought i was going alright on the right crank and then the tool popped out and i noticed instead of pushing it off the crank, it had actually completely stripped out the thread of the crank arm.

now what? i'm replacing the crank arms anyhoo, but how the hell do i get it off? :?
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by BNA » Fri Apr 06, 2007 4:37 pm

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Postby Mulger bill » Fri Apr 06, 2007 4:37 pm

G'Day Ash.

Pretty easy one this, put the left crank back on, remove the right hand bolt then go for a ride up and down your street. The crank should loosen up enough for removal. The risk of trashing the tapers in the crank are high, but without a thread for the puller, it's cactus anyway.

Good luck mate.

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Postby MountGower » Fri Apr 06, 2007 5:53 pm

way.
Last edited by MountGower on Thu Mar 05, 2009 12:47 pm, edited 1 time in total.
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Postby ashsimmonds » Fri Apr 06, 2007 5:58 pm

ok, i might try the riding thing when i'm a little more soberer. 8)
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Postby mikesbytes » Fri Apr 06, 2007 7:20 pm

ashsimmonds wrote:ok, i might try the riding thing when i'm a little more soberer. 8)


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A bit of wobble may assist.

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Postby ashsimmonds » Fri Apr 06, 2007 7:23 pm

WT?? :? :lol:
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Re: crank removal tool stripped my thread, now what?

Postby MJF » Fri Apr 06, 2007 8:11 pm

ashsimmonds wrote::cry: :cry: :cry:

removing the cranks on my CRX4, the left one came off alright, then thought i was going alright on the right crank and then the tool popped out and i noticed instead of pushing it off the crank, it had actually completely stripped out the thread of the crank arm.

now what? i'm replacing the crank arms anyhoo, but how the hell do i get it off? :?


Probably a two-jaw puller, but depends if you can unbolt the chain-rings to get the jaws around the crank arm. The one in the link is kind of large - any engineering shop, engine/gearbox re-conditioner or even a decent garage will have a selection of these, or you can buy them at places like Supercheap auto.
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Re: crank removal tool stripped my thread, now what?

Postby heavymetal » Mon Apr 09, 2007 8:41 pm

ashsimmonds wrote:now what? i'm replacing the crank arms anyhoo, but how the hell do i get it off? :?


Angle Grinder. Cut in both sides of the crank arm so as to cut it in half. If you damage the bottom backet shaft, you may need to buy another one.

Depending on your set up, with the left crank off, you may be able to remove the entire bottom bracket from the right hand side with the crank arm still on, and then press it off in a hydraulic press.
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Re: crank removal tool stripped my thread, now what?

Postby sogood » Mon Apr 09, 2007 8:46 pm

heavymetal wrote:Angle Grinder... and then press it off in a hydraulic press.

Yep, that all sounded a bit heavy metal! 8)
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Re: crank removal tool stripped my thread, now what?

Postby heavymetal » Mon Apr 09, 2007 8:56 pm

sogood wrote:Yep, that all sounded a bit heavy metal! 8)


I have a good assortment of tools for working on stubborn car and bike parts. A 25 lb sledge hammer, angle grinders of various sizes, access to a hydraulic press, and my favourite for when all else fails, the gas axe, a faithful old oxy acetylene torch. :D
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