Over-tightened rear hub nuts?
Ticaboy
Posts: 314
I have just stripped the bike to clean thoroughly and to do some minor repairs (first fall on SPD's). I removed the rear wheel and the skewer, and loosened off the two outer nuts of the hub. Brown sh*tty liquid came out. I wiped this off, tightened the nuts up again until firmly tight, and replaced the skewers.
Having re-assembled the bike, the rear wheel doesn't turn now unless physically man-handled. Have I tightened these nuts up too far? Is there a knack or a rule-of-thumb? Is it something else? Help
GT Expert 06
Having re-assembled the bike, the rear wheel doesn't turn now unless physically man-handled. Have I tightened these nuts up too far? Is there a knack or a rule-of-thumb? Is it something else? Help
GT Expert 06
0
Comments
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Yes. They need to be tight enough so the wheel doesn't wobble; but obviously not so tight as to stop it spinning.
btw there are normally two nuts either side. You lock them together (by tightening one as you undo the other) so they don't come undone.
If brown liquid came out of the hub then I suggest you undone them again and clean and re-grease your hub. There definately shouldn't of been any licquid in there.
With most hubs once the cone nuts are undone the axle can be removed. Removing the axle will allow you to remove and check/clean the bearings. (I would put a cloth down under the wheel before you remove the axle just incase you accidentally drop a bearing.)0 -
No. Definately only one nut either side. One has the word "lock" on it, but not the other one. They're Shimano hubs. Will have another go with the tightening thing, and will re-grease the hub itself. They are the original hubs, so may just get some nice new ones if the re-attempt doesn't satisfy. I'll just add them to the new chain set!
GT Expert 060 -
GT expert, thats got Deore hubs? The bad news is there are two each side!
Have you removed that silly rubber cover?0 -
Park tools do a good tutorial - http://www.parktool.com/repair/readhowto.asp?id=105
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<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by gary_fisher3</i>
GT expert, thats got Deore hubs? The bad news is there are two each side!
Have you removed that silly rubber cover?
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
No, didn't remove the cover, put it back on. Can you chuck that bit away then?
The Hubs just say Shimano FH-M525 VIAM. No mention of Deore, but that reference number (beginning with 5) corresponds with the Deore range so guess they must be.
GT Expert 060 -
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by gary_fisher3</i>
Yes. They need to be tight enough so the wheel doesn't wobble; but obviously not so tight as to stop it spinning.
btw there are normally two nuts either side. You lock them together (by tightening one as you undo the other) so they don't come undone.
If brown liquid came out of the hub then I suggest you undone them again and clean and re-grease your hub. There definately shouldn't of been any licquid in there.
With most hubs once the cone nuts are undone the axle can be removed. Removing the axle will allow you to remove and check/clean the bearings. (I would put a cloth down under the wheel before you remove the axle just incase you accidentally drop a bearing.)
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
Really - do put a cloth down if you do this because lots of tiny bearings are going to fall out!
And definitely don't do it anywhere near the firdge! It's a universal truth that loose bearings always find their way to the least accessible part of your house - in the gunk under the fridge.
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Deinitely a locknut and cone, requires a cone spanner and flat spanner (17mm for the locknut, 13mm cone fornt, 15mm cone back)
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