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  1. #1
    Junior Member
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    Trek 7200 FX - Loose Crank Arm

    I just bought a Trek 7200 FX last Thursday. On a 14 mile ride today, the left crank arm came loose with about a mile and a half left. I tightened it by hand (no tools with me) and took it easy the rest of the way home. I had to stop a couple more times to tighten it again. Is this something that I can take care of on my own, or should I take it back to my LBS to be looked at?

  2. #2
    Senior Member sydney's Avatar
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    Quote Originally Posted by benzol
    I just bought a Trek 7200 FX last Thursday. On a 14 mile ride today, the left crank arm came loose with about a mile and a half left. I tightened it by hand (no tools with me) and took it easy the rest of the way home. I had to stop a couple more times to tighten it again. Is this something that I can take care of on my own, or should I take it back to my LBS to be looked at?
    Take it back to the shop. The crank arm interface may be hosed and if so, will never stay tight.

  3. #3
    Sometimes knows stuff. rmfnla's Avatar
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    May 2005
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    Yeah, and assuming you bought it there, they never should have let it leave the store that way.
    Today, I believe my jurisdiction ends here...

  4. #4
    Senior Member midgie's Avatar
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    2004 Raliegh Retro Glide 7(green of course), 2005 Stingray Pea Picker 2005 Specialized Hardrock 2014 Trek Crossfit
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    Definately take it to the shop you bought it! If you don't get it on right it will continue to loosen. If you continue to ride, you may round out your crank arm and/or spindle. I've seen it happen too many times.
    They come in a month later saying the arm won't stay on and by this time they've done damage.
    We're gonna have the hap, hap, happiest Christmas since Bing Crosby tap-danced with Danny ****ing Kaye.~Clark Griswold

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