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  1. #1
    super absorbent
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    DT Swiss Onyx Disc hub rebuild?

    If I grab the outer edges of the large cassette, I get a little side to side wiggle with my rear hub. The cassette itself is not loose and is tight on the hub so I'm guessing the bearings need to be repacked and/or replaced. Is it possible to have this thing serviced or is it a sealed system? I've never broken down a hub before so I'm very cautious about tearing it apart. If it can be done, I'll likely take it to my LBS.
    The more complicated it is, the more that can go wrong.

  2. #2
    Team Blindspot
    Reputation: S-Works's Avatar
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    Quote Originally Posted by ChipAllen
    If I grab the outer edges of the large cassette, I get a little side to side wiggle with my rear hub. The cassette itself is not loose and is tight on the hub so I'm guessing the bearings need to be repacked and/or replaced. Is it possible to have this thing serviced or is it a sealed system? I've never broken down a hub before so I'm very cautious about tearing it apart. If it can be done, I'll likely take it to my LBS.
    Is it the freehub body moving? Or is the cassette wiggling on the freehub? Some cssettes don't fit tight. I've shimmed them tight in the past by sliding slices cut from an aluminum soda can (or beer can if you prefer) in between the cassette and freehub body. Try looking at that first before you get into tearing it apart.

    Good Luck
    Astigmatic Visionary

  3. #3
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    Axle Nut?

    Sounds to me like the axle nut is loose. Take off the wheel. Check which side the offending nut is on. Tighten the nut with you fingers or a spanner/wrench. Do not overtighten! Check the wheel spins is okay. Put the wheel back in the bike.

    The bearings should be okay, they are sealed bearings. There are rebuilding instructions on the DT Swiss website (www.dtswiss.com).

  4. #4
    super absorbent
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    Thanks for both replies. I'll look at things more closely this evening.
    The more complicated it is, the more that can go wrong.

  5. #5
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    I had the same issue, doesn't matter if Sram Or Shimano cassette. It's play, I remedied it by slippping some teflon tape over the hub and splines and then working the cassette down, and wa la it worked... Hope it helps.
    "Home of the Bearlodge Mtn Classic"



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  6. #6
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    It was definitely play between the cassette and hub. I hadn't read the tip about the teflon tape yet so I just placed the soda can strips in a couple of key places and the problem is solved. Thanks guys!

    P.S. The soda strips were a little bit of a pain so I'll try the teflon next time I remove my cassette. I'm assuming you wrapped it completely around the freehub body? How many layers? What's the longevity like with the tape - does it tend to break down or loosen significantly after a while?
    The more complicated it is, the more that can go wrong.

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