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Tools to Check a Bicycle Bottom Bracket

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Part of the video series: Common Bicycle Repairs

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Summary: Learn about the tools you'll need, like a crank puller, to check a bicycle bottom bracket, and more repair tips from an expert cyclist in this free bicycle repair video clip.

Views: 2,765 | Tags: repair, biking, riding, bicycle, bikes, bicycles, fit, cycling

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About the Expert

Parker Ramspott Parker Ramspott has owned and operated a bicycle store in Amherst, Massachusetts for over 20 years. This experience combined with his skill as a mechanic mak... read more

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Video Transcript

Tools to Check a Bicycle Bottom Bracket

The last bearing we're going to talk about today is the bottom bracket bearing. On today's bicycles, most of them are a sealed mechanism that is unadjustable, if you detect play or have clunking noises in your bottom bracket today, it's either worn out or one of the cups that holds it in place has backed out and is a little loose. On a modern bottom bracket that is exhibiting some play, you would need to first pull the crank set off, you would start that by removing this nut. Then using a tool like this, which is a crank puller, it would pull the crank arms off the axle in here, you'd pull both of the crank arms off and then tighten the bottom bracket cups if necessary, if that was the problem, this is the tool used to tighten the bottom bracket cup. However, if there was still play in the bearing, the whole assembly would have to be replaced. They are not meant to be adjusted today.

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