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Chatham NJ
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477 Posts
Discussion Starter · #1 ·
I need some help removing my crank arms. They are square taper, and haven't been taken off for 4 years. :rolleyes:
I took off the bolt at the end of the crank, so the only thing holding on the crank arm is the taper fit. What can I use to pry it off without hurting the crank arm or taper?
Please dont say something like, a crank arm puller, I just want a way I can do it without going out and buying a tool.
And I have checked out parktool.com for instructions.
Thanks
 

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Derailleurless
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9,122 Posts
If you're not buying a crank arm extractor, I assume you're not interested in a gear wheel puller, either. You could also hit up your LBS for a self-extracting crank bolt and cap set, but that will cost as much as the tool, so should we nix that idea?

About the best thing I can suggest is go crank up a steep hill with the bolts removed, or slightly backed out. But you do realize that's a recipe for rounding out the tapers, right?
 

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Chatham NJ
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477 Posts
Discussion Starter · #3 ·
I will see if one of my friends has a tool. I guess there is no safe way to take it off without a tool from what your saying.
 

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45 Posts
It is pretty easy to do if you have an angle grinder.

eman said:
I will see if one of my friends has a tool. I guess there is no safe way to take it off without a tool from what your saying.
 

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The $18 tool is a lot cheaper than a $40 bb. I have used a block of wood and a hammer before in an emergency but if you are not careful you can bend the spindle. Go with the Park CP-1 and if you have a cartridge bb you will also need a Park BB-1 to remove it also. If you ride when it is wet out it is a good idea to remove your bb and wipe it off reapply grease. On steel bikes this will prevent the bb shell from rusting.

Death to the pumpkins!!!!
http://67.29.153.214:30908/Pumpkin throw.mov
 

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Angle Grinder

My cheap cranks were on so tight that a crank puller and regular automotive bearing puller didn't work. I had to go with the grinder.
 

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yeah

eman said:
I will see if one of my friends has a tool. I guess there is no safe way to take it off without a tool from what your saying.
Yup that's pretty much what he's saying.
 
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