How to Replace a Bicycle Pedal Crank

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Tips for replacing bicycle parts. Learn how to replace the crank on a bike with expert tips on bicycle repair in this free video clip.

Part of the Video Series: Basic Bicycle Repairs
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Video Transcript

Hello this is Russ from the Salt Lake City Bicycle Collective. Online at Also here on behalf of Expert Village. After you've removed these two things, maybe you've cleaned them, you've got them all nice and good to go, maybe you removed the chain rings, not sure. To reinstall them, its really important that before you reinstall them that you clean all of the grease off of the square spindle here. None of this area here should be lubed. If you lube that area and you do attach this crank arm, you'll have a tendency to draw it on further then it needs to be and the problem with that is, you'll deform the inside of your crank arm thereby destroying it. So what you want to do is make sure that you line up the crank arm so that they are opposite of each other so that you're not pedaling both on the same side. After you have that, you're going to want to go ahead and grab the 14 millimeter nut that you removed before. You can put a little bit of grease on this if you wanted to. Start that guy on there. After you get that started on there most of the way, you're going to take your 14 millimeter socket or whatever you have from your toolkit and you're going to tighten this one on here. This bolt should be pretty much as tight as you can get it for the most part. You don't want to bust it off there, but you want to put a fair amount of stress onto that one, make sure that its on there all the way. After its reinstalled, make sure that you don't have a situation where you're crank arm is rubbing on any part of your frame.


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