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  1. #1
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    Rebuilding old Trek..Square Taper BB?

    So I am rebuilding my 1999 trek 6000 for my sister. By rebuilding i mean just getting it running for her.

    I just need to replace the front crank assembly and rear cassette. The cassette i'm not too worried about as I'll just grab a cheaper 8sp cassette to replace what's there.

    My issue comes with never dealing with the crankset and BB. It pedals fine so I would like to just keep the BB but I don't know how to remove the crank assembly since it looks like it takes a 1/2in socket to remove it (which i tried but it doesn't fit). I assume there's a special tool for this? Do I have a square taper BB?

    Would this new crankset work if I remove the old and leave the BB?
    Shimano Alivio M430 Crankset > Components > Drivetrain > Cranksets | Jenson USA Online Bike Shop

    Bike in question:
    1999 Trek 6000 - BikePedia

    Thanks!!
    Phil

  2. #2
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    So I found this from park tools:
    Park Tool Co. ParkTool Blog Crank Installation and Removal- Square Spindle Type

    Mine looks exactly like the first picture there.

  3. #3
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    Rebuilding old Trek..Square Taper BB?

    So if ya have a square taper, try this.

    Move the chain off the rings so you can just spin the crank. It should spin easily. If it doesn't then replace the bb

    Grab the crank arms and twist from side to side. If it doesn't feel like it is knocking, you are fine and just use.

    Bill

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