Rear Hub Assembly Advice

[m-trax]

Right - I had to change my back wheel as my old rim was cracked.

So swapped cassette onto a spare rim I had in the shed. The hub was running a bit rough so stripped it down, regreased and reassembly. Care was taken to ensure the parts went back in the right order.

However, the bike wheel was then skewed on the frame. :? The spacers were on the opposite to the freewheel - how I have seen all bikes done.

If I swap the spacers on to freewheel the wheel is vaguely straight (not perfect), but the cassette looks silly with a massive gap between it and the frame. :?

Where have I gone wrong?

 

[craiga]

However, the bike wheel was then skewed on the frame.

Do you mean the wheel is offset to one side? It sounds like you have unscrewed both sides of the axle - you should unscrew just the non drive side to ensure that the axle goes back in the right place.
Measure how far out you are & then adjust the cones that distance on the axle - reassemble & then see how close you are.
Then it's trial & error..................and swearing

 

[Splatter Paint]

Are you sure it was 100% central before you started? If not it could be the wheel is dished badly.

 

[m-trax]

Hi,

Yes I did unscrew axles both sides, but measured the thread remaining against the other hub/rim. First time I have serviced a hub so I wasn't aware you had to keep one side locked.

The wheel is offset to one side yes

Splatter - I don't know to be honest as I didn't put the wheel on before I started. I just dug it out the shed and transferred everything over. It is not perfectly true but it isn't a million miles out.

However, I am not sure it was offset to one side before I even started. The reason I say is I took a wheel off another mountain bike and put it on mine and that is offset a little to one side as well. :? Not as pronounced but still offset.

Still trying to puzzle out what is wrong. :? I don't know how to fix it. :?

 

[Xesh]

If you replaced the cones/locknuts exactly as they came off then it'll be the rim that needs re-dishing. You'd be surprised how many machine built wheels are true but not necessarily dished correctly.

The other wheel you tried - was that central in the frame it was in originally? If it was and it's offset in your frame I'd take your frame to your LBS and get them to check the frame alignment. Also take your wheel and get them to check the dishing.

 

[dyna-ti]

Very unlikely to be dishing,there wasnt a dishing problem when you removed them so why would one suddenly appear

You've learned a golden rule of hub maintenance-never take off both cones unless you know what your doing
I too found this out the hard way .
All you can do to really get on track is to have the cones on but a gap between them and the locknuts
Put the wheel in the drop outs and adjust the cones with a spanner to move the wheel one way or the other,when your happy,tighten up the locknuts.
Best if you have the tyre off and a felt tip mark on the centre of the frame and in the centre on the rim as a rough reference point.

Its a long annoyingly boring job but lesson learned