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  1. #1
    Lost in Nostalgia
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    New type BB questions

    I'm used to the old loose ball type of BB circa 1970's, but I really need to catch up on this new stuff.

    Questions,

    1. The items #6 and #9, left and right hand adapters, are these torqued to certain specs? and is there a tool that removes and installs it?

    2. #7 just says inner cover and O ring. Isn't this where the sealed bearings are? (Shimano doesn't say)

    3. The crankarm on the right, that shaft that comes from it goes into the bearing right? is it a press fit?

    4. Is there a technical manual that describes in detail how to work on the new BB's, STI shifter adjusting etc.?

    Thanks..knotty
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  2. #2
    Senior Member Nessism's Avatar
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    #6 and #9 have the bearings inside. They tighten down with a special tool - check the Park Tool web site for details. Once the bearings are installed, with #7 captured in between to keep water out, the crank spindle slides through fairly easily. The left side crank arm then attaches and you tighten it all down with the pinch bolts.

    For more details on how to install everything check the Shimano web site.

    Good luck.
    Becareful buying/selling bike parts on-line. I learned the hard way. :(

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  3. #3
    Lost in Nostalgia
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    OK, I got it now. I wasn't sure exactly where the bearings were. I'd better learn all this before the new bike gets to where it needs repair.

    Thanks a lot..knotty

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