4/24/2014 10:37 AM
Edited Date/Time: 4/24/2014 10:39 AM
Sounds like a bad situation. I dont recommend ever taking off 48spline cranks until after atleast 2-3months of riding so the splines can wear in. Thats why you ALWAYS maintain your bottom bracket BEFORE installing your new cranks.
If you have to do it now, thread the crank tool (if you have one) all the way in and then give it a good crank to ensure its tight in the spindle. Then go at it with a hammer.
If you dont have one, either get one or go to the hardware store and get a LONG bolt that fits and thread it in a few inches and do the same as you would with a crank tool.
Putting a piece of wood on the backside of your crank arm and wacking it with a hammer will work, but I highly advise you not to do this. Instead of pushing the crank/spindle perfectly horizontally outwards and away from eachother, it will push the crank diagonally away from the spindle which can cause some SERIOUS damage to the splines.
But if theyre freshly installed, I suggest you just deal with it for a few months and let the splines wear in a good amount before messing with them!
Goodluck!
Edit: make sure to grease your splines aswell! #1 most common mistake when it comes to installing/reinstalling cranks!
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