XT rear hub nuts ke...
 

[Closed] XT rear hub nuts keeps loosening ?

Posts: 0
Free Member
Topic starter
 

As described really, M756 rear hub. Only 2 or 3 months old, follows the same pattern
1.Too much play in wheel
2.Discover the nuts are loose
3.Hand tighten the nuts.

If I overtighten the nuts the wheel wont spin as freely which is why I only hand tighten.

Warranty job or design "feature"?

Cheers


 
Posted : 19/05/2009 7:26 pm
Posts: 6091
Full Member
 

I've had the same problem. I put some loctite on the axle and no problem since but then I haven't been riding my singlespeed much and thats the bike its on. I had this problem even when using cone spanners. I don't understand why there's only one nut on one side.


 
Posted : 19/05/2009 7:31 pm
Posts: 0
Free Member
 

If you tighten the locknuts on their own, then chances are you're turning the cone with it, throwing it out of adjustment.
Hold the cone still with a cone spanner and then tighten the locknup up against it. It's an art and will take several attempts, but it should work...


 
Posted : 19/05/2009 7:38 pm
Posts: 1
Free Member
 

there is a really good guide on the park tools website where you clamp the wheel on the outside of the left dropout and then do it. Hard to explain but they manage it!


 
Posted : 19/05/2009 8:52 pm
Posts: 1
Free Member
 

What Jimbo said...you've got to tighten the lockring against the cone (5mm allen key and an 18mm cone spanner for my 08 XT rear hub)


 
Posted : 19/05/2009 8:54 pm
Posts: 0
Free Member
Topic starter
 

Understood. Thanks for this. Couple of questions..

If, by tightning the nut in isolation I've thrown it out of adjustment, can I easily correct it or is this a lbs job to get it right?

Also, whats the 5mm allen key for nukeproof?

Cheers guys


 
Posted : 19/05/2009 9:55 pm
Posts: 0
Free Member
 

Loctite.


 
Posted : 19/05/2009 10:23 pm
Posts: 1
Free Member
 

[i]Also, whats the 5mm allen key for nukeproof?[/i]

Can't confirm for other years but on my XT '08 hub the 5 mm allen key is how the locknut is tightened as the allen key is inserted at each end into where the QR skewer is removed from.


 
Posted : 19/05/2009 10:45 pm
Posts: 0
Free Member
Topic starter
 

cheers


 
Posted : 20/05/2009 7:20 am
Posts: 507
Free Member
 

Also, if they're loose on the drive side, you'll have to remove the cassette, loosen the other side and pull the axle through to get two cone spanners on it. Try to get the same length of axle protruding from either side(about 5mm).


 
Posted : 20/05/2009 7:48 am
Posts: 0
Free Member
Topic starter
 

Otherwise the wheel will be off centre I suppose?

So I need to order two cone spanners?

Thanks


 
Posted : 20/05/2009 7:50 am
Posts: 1
Free Member
 

Otherwise the wheel will be off centre I suppose?

No, you'll just have different lengths of axle sticking out either side.


 
Posted : 20/05/2009 7:53 am
Posts: 18
Free Member
 

I think you'll find this useful [url= http://www.parktool.com/repair/readhowto.asp?id=105 ]Park Tool hub service guide[/url]


 
Posted : 20/05/2009 9:59 am