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  1. #1
    mtbr member
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    Join Date
    Jul 2007
    Posts
    25

    EBB again - will not turn

    Bought my Sir9 last year - Has been an awesome ride but adjusting the EBB has been a pain to say the least. Does anyone else have issues turning the EBB for adjustment? Short of pulling off the crank arms everytime it does not want to rotate freely. I have sanded the shells and the inside of the frame hoping that would do it but no avail. I know one of Niners new ideas is to run 2 layers of Teflon tape - I tried this but once the tape is on you can forget about getting it to turn. Do I need to grind the shells or frame down a bit for more clearance? Or could it have some high/low spots on the face which is causing it to bind? If anyone has some ideas I would certainly welcome them.

  2. #2
    mtbr member
    Reputation: driver bob's Avatar
    Join Date
    Oct 2005
    Posts
    2,290
    Using an external BB?

    The pre-load from the NDS crank bolt on the bearing causes binding of the EBB.

    I have to loosen of the NDS crank of my 960's when I adjust the EBB, fought with the blighter for ages until I sat down with a beer and actually worked out what was going on.

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