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I first started inspecting my wheel because I noticed when I applied my brake while not riding, I could push my rear end and the wheel would turn forward and back about 1/4"-1/2" each way (but the brake is still locked tight) . I took my wheel off and saw that my DT Swiss center lock was loose, so I bought a Park BB tool and tightened it up, but I still have the problem but less now. I see that the wheel is moving @ the center lock just a bit.

Then as I was messing around with the bike upside down, I noticed that my cassette is wobbling ever so slightly.. Is it possible/probable that this is related? There is also some rubbing noise that is not coming from the brake that is difficult to locate.

Is this likely my axle? Hub? Cassette? Thanks!!

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How old is the hub? Is this a fixie conversion? Mountain-bike? Do you have any pictures? I guess what I'm getting at is that some more details would be helpful. Or, if you don't know, you might try posting some pictures if possible. This sounds like a lock-ring/hub issue, but it's not easy to diagnose as it. Thanks. –  user2432675 Jun 7 '13 at 18:56
    
It's a mountain bike, deore XT hub, 9 speed. Heres a video: youtube.com/watch?v=zA0RSOHZMSc&feature=youtu.be - I did tighten it with a Park BB tool and it's snug, however when the wheel goes back on the bike there is still a problem. I can see it moving at the center lock. –  Mike Stevenson Jun 8 '13 at 1:05
    
If you twist the wheel side to side does it wobble? –  Daniel R Hicks Aug 11 '13 at 3:15
    
Have you ruled out the spokes? Just curious. –  Techie Joe Oct 11 '13 at 23:18

1 Answer 1

I'm not 100% certain how the DT Swiss centerlock works but it seems like its a way to attach a 6 bolt brake rotor to their hub. What may have happened is that since your center lock was lose:

  1. it allowed the rotor to work against the 6 posts on the adapter causing some wear
  2. it allowed the adapter to work against the hub, also causing some wear.

I'm not certain, but the freehub body might be the same material as the hub shell (the adapter part). I've heard of the splines on freehub bodyies (from other manufactures) getting worn down, causing the cassette to wobble. In these cases, the freehub body was always soft aluminum. Inspection of the splines on both the freehub side and the centerlock side will tell you if they've been worn out.

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