Recently I bought a set of wheels with Shimano 756 XT 6-bolt hubs. I have been on about six or so rides with them, but today the rear one started making a high-pitched intermittent squeaking noise every now and then. It happened after I did a fairly rough descent, rougher than I usually do. I think it is the hub because it speeds up when the wheels spin faster, and it is present even when free-wheeling.
So, assuming it is the hub, what do I do? Would tightening up the cup/cone system help, or should I add more grease, or should I just MTFU? I thought I better ask now, as I have heard tales of hubs seizing etc, and prevention > cure etc.
Cheers!
Remove, clean and reseat the dust seals? Worth a punt before attacking the hub with spanners, grease etc!
mine did that. Really nasty high pitch ring. It lasted for a couple of days then it stoppped. This would be back in February sometime, hasn't done it since.
Kev
Hmm ok, so just tightening the bearings up a bit is a bad idea at this stage then?
As Jimbo says, it may just be the seals, we've had other makes really squealing because of this. If it goes after dribbling a drop of GT85 where the seals contact then you've got a dry seal.
Put a drop of chain oil on the non drive side dust seal.