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  1. #1
    18 dog baby
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    loose bottom bracket?

    how do i know if i've got a loose bottom bracket?

    i feel a sort of clunk and hear a dull ping once in a while when i lay hard on the right crank of my Crosscheck. it's the same thing i experienced a few years back with another one of my bikes -- a Long Haul Truker. when i brought the bike into the LBS that had assembled it, they said the BB had "worked loose."

    this is a new Crosscheck which hasn't been adjusted since I picked it up. i would take it back in, but i'm pretty busy with work for the next few weeks.
    mah-ha

  2. #2
    Great State of Varmint Panthers007's Avatar
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    Bring it back in. If you don't have the proper tools, or skills, to do this work yourself - you have no option but to take it to the shop it came from. They will honor the work under the warranty I assume the bike came with.
    How do you keep an idiot in suspense?

  3. #3
    18 dog baby
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    yes, thank you. but: how do i know if i've got a loose bottom bracket?
    mah-ha

  4. #4
    DRF aka Thrifty Bill wrk101's Avatar
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    Quote Originally Posted by 2mtr View Post
    yes, thank you. but: how do i know if i've got a loose bottom bracket?
    Park Tool site gives a great recap of bb adjustment including whether it is loose. Is there ANY play in the crank arms?

  5. #5
    Senior Member
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    As always, Sheldon has the answer...

    http://www.sheldonbrown.com/creaks.html#bottom

  6. #6
    Great State of Varmint Panthers007's Avatar
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    Put your hand on one of the crank-arms. With the bike upright, try to push and pull the crank-arm toward and away from you - left and right as if you were viewing the bike from behind. Is there any play side-to-side? If yes - the bottom-bracket is loose. Or the crank-arm is loose. Got the right tool? Tighten the crank-arm bolt and try again. No got tool?....

    "....- you have no option but to take it to the shop it came from."
    How do you keep an idiot in suspense?

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