Bottom Bracket Wrench

garethjones
garethjones Posts: 57
edited May 2014 in MTB workshop & tech
Hi,

I am trying to install a new bottom bracket, I took the old one off no problem (Deore bb51), but my bb wrench does not fit the new bottom bracket (it is too large) which is a XTR M980. I would have thought the cups would be a standard size?!

Comments

  • BigAl
    BigAl Posts: 3,122
    Are you sure you have the right model numbers? Look like they take the same tool to me

    Deore BB51
    bb51b.jpg

    XTR 980
    Shimano_XTR_M980_BottomBracket_4.jpg
  • garethjones
    garethjones Posts: 57
    just found a little plastic adapater that came with the new bb
  • The Rookie
    The Rookie Posts: 27,812
    And....the cups have the same form for the wrench don't they? as photo's above?
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • garethjones
    garethjones Posts: 57
    No they don't, maybe I had an older version of the bb51
  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Are you sure? I had one of the first externals out and they've all been the same since
  • The Rookie
    The Rookie Posts: 27,812
    Me too, I have two sets from 2006, Deore and XT, both are identical to the latest ones.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • cooldad
    cooldad Posts: 32,599
    AFAIK new XTR is different.
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  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Yeah - for pre-load but not screwing in the cups?
  • cooldad
    cooldad Posts: 32,599
    That could be it.
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  • garethjones
    garethjones Posts: 57
    I will take a picture tonight, the xtr is too small to fit my bottom bracket wrench - but it comes with a little plastic ring that fits inside the wrench.
  • cooldad
    cooldad Posts: 32,599
    New XTR has chamfered edges but grroves look about the same.
    415jfVsc2KL._SY355_.jpg
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools