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  1. #1
    The AVatar Ninja SaabFan's Avatar
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    BB tools for 9-speed Dura Ace?

    Hello all-

    I have a new (to me, it's really used) bike with a Dura-Ace bottom bracket. Based on the PO's notes, it's due for servicing. I'd at least like to open it up and take a look for peace of mind.

    However, I've never worked on this exact model. It's a last-generation, 9-speed Dura Ace bottom bracket. Park Tool's website lists the following for adjustable bottom bracket service:

    -Repair Stand, holds bike secure for easy work.
    -Lockring Spanner, such as HCW-5
    -ShimanoŽ Dura-Ace 7700 and XTR 950 lockrings use BBT-7.
    -Adjustable cup spanner, such as SPA-1 or SPA-6. ShimanoŽ Dura-Ace adjustable cup uses BBT-2.
    -Grease PPL-1 PolylubeŽ 1000
    -Marking pen, and masking tape.
    -Rags

    Can someone please confirm or deny which of these I'll need? I don't own every item on that list and I don't want to just blindly buy tools if I don't need them - I'm not sure of the model number for my part (is it a 7700?) so I'm not clear on what I'll need. My take on it is that I'll need BBT-7, BBT-2, and a generic lockring spanner. Is that correct? Or do I need the adjustable cup spanner (SPA-1 or SPA-6)?

    Also, if someone knows the ball bearing diameter, that would be great.

    Thanks in advance!
    Q: How many surrealists does it take to change a light bulb?
    A: FISH!

  2. #2
    The AVatar Ninja SaabFan's Avatar
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    Oh yeah - what do I need to get the cranks off this BB too?
    Q: How many surrealists does it take to change a light bulb?
    A: FISH!

  3. #3
    Elitist Troglodyte DMF's Avatar
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    If you'd done a little more research and read a little more closely, the breakout is pretty specific. We can't tell you what you do or not have unless you tell use whether you're riding a double or triple. The triple uses a BB-7703 which in an integrated (non-adjustable) BB. For BB-7700: BBT-22, BBT-7. For BB-7703: BBT-22.

    You can use a pipe wrench or big channel lock pliers instead of the BBT-7, but you should shot for doing so. I can't think of a way around owning a BBT-2 (now replaced by BBT-22) with a Shimano splined BB. You can use axle grease instead of the fancy stuff.

    Self-extracting crank bolt requires 8mm hex (Allen) wrench. I use two versions: a long L-handle for installing and extracting, and a socket version for use on the air ratchet (removal only) and on the torque wrench (final torquing only).

    Obviously Park isn't the only source of these tools, but they make good stuff. You might be better served to buy a starter toolkit like Spin Doctor Essential. There's several more tools that you will need in time, and the bundle is cheaper.

    Almost all BB ball bearings are 1/4".
    Last edited by DMF; 11-03-06 at 11:35 AM.
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