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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 09-07-10, 10:34 PM   #1
Pooptet
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Friend has some BB problems

Basically, his BB is not aligned. The right side is "popping" out and makes the crank all sketchy. Here's a convenient diagram:



How would we fix this? Thanks!
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Old 09-07-10, 10:44 PM   #2
hairnet
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Is there play in cranks? Who installed the BB? Which BB is it? What makes it sketchy? I installed a new Shimano BB on an older bike and the cup sticks out a bit installed with the specified torque.
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Old 09-07-10, 10:47 PM   #3
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There is a lot of play. Like the cranks will stop spinning when rotating it half way. The BB was already installed, but I guess it popped out?
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Old 09-07-10, 10:50 PM   #4
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Post in the Mechanics forum.
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Old 09-07-10, 10:51 PM   #5
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Let me guess, Shimano plastic cup BB?
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Old 09-08-10, 04:37 AM   #6
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Or it's a cup and cone with a loose/missing lockring, had to say from a sketch. Need a real picture.
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Old 09-08-10, 05:03 AM   #7
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Moved to Mechanics.
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