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Can't remove my crank!!(6 posts)

Can't remove my crank!!Fixie-ated
Feb 27, 2003 8:41 AM
I am trying to remove my STX-RC crank from the bb. I use a Park crank removal tool, but am having no luck. I remove cranks all the time, so I am no newbie to this.

The crank threads are all fine, but I can not seem to apply enough force to break the crank free. I have even tried spraying in a lubricant but no luck.

I am considering putting the crank bolt back in, but not too tight. Then, I think I will take it for a bumpy off road ride.

Any other suggestions?

rubber mallet on the sides to un-crack the fusion. nmSpunout
Feb 27, 2003 8:57 AM
Square taper, not splined, right?....asphalt assault
Feb 27, 2003 9:26 AM
The poster above mentioned a rubber mallet but I like to use a plastic mallet to do the same thing. Tighten your crank puller in and give it a few whacks, snug it a little more and whack it a couple more times....

Also, taking the crank bolt out and just pedaling down the block and back might do the trick, a bumpy of road ride might be more then you need.

Good luck!
Great ceremonial cheater pipe.cory
Feb 27, 2003 9:46 AM
Riding without the bolt sometimes does it. I don't think the road surface makes any difference--it's just the forces on the crank that break the stiction. Try putting the cranks horizontal and standing on them, then rotate 180 degrees and do it again.
When an aluminum seat post sticks in a steel tube, the old remedy was to pour ammonia around it. I've never tried it, but supposedly it dissolves the corrosion. You have the same metals in a crank/BB spindle interface, so you could try that.
As a last resort, slip a piece of pipe over the handle of the wrench and bear down. It will either break it loose or pull the threads out of the crank. Then you cut it off with a hacksaw...
re: WasherRusty Coggs
Feb 27, 2003 10:01 AM
Are you sure there is not still a washer in the crank arm?
re: Can't remove my crank!!Hardtail
Feb 27, 2003 12:39 PM
Check the thing about the washer and also, what kind of tool is it? Park makes one for a Shimano Splined type crank and the center part that pushes is bigger and probably wouldn't go in to the square hole on that type of crank.