White Eagle Posted April 9, 2008 Posted April 9, 2008 With my good friend Tito increasing interest rates and the fuel price going up every month I decided it's time to learn how to service the bikes myself.Troy's MTB has been doing strange things on the rear hub, so I decided to start by servicing the hub. Took the cassette off no prob's loosened the locking nut and other bits and pieces on the axle only to discover what looks like a sealed bearing which I could not remove.How do I remove this bearing or do I need a special instrument. BTW the hubs have got "Formula" written on them if that helps.My bike was easy it had normal ball bearings which I removed cleaned and replaced with grease.Flippen woman if it's not them then their bikes, always a problem.
R2S2 Posted April 9, 2008 Posted April 9, 2008 Sealed bearings cannot be serviced and must be replaced. Are you sure the issue with the hub lies with the bearing?The bearing is probably pressed into place. Best is to use a bearing puller, but if you don't have one you can lightly tap it out with a wooden block and a pin of sorts, working you way around the circumfence of the bearing. Heating the hub slightly with nothing more than a hairdryer could make this a bit easier, as the aluminium hub will expand more than the steel bearing, thus loosening it.
White Eagle Posted April 9, 2008 Author Posted April 9, 2008 Will try the wooden block and pin, thanks. I believe that the issue with the hub was not the bearing itself. The free wheel thingy was sticking. When putting the whole lot back together I applied a little lubricant to it and it seems to be working fine.
R2S2 Posted April 9, 2008 Posted April 9, 2008 If the bearing isn't the culprit, then rather leave it in place, as you risk damaging it when you remove it - unless of course you were planning on replacing it in any case. If you do replace the bearing, tap it back into the hub with a light hammer and wooden block, using the latter to protect the bearing from the hammer. It does make things a bit easier if you apply a little oil or thin grease to the sliding surfaces before starting.
White Eagle Posted April 9, 2008 Author Posted April 9, 2008 Will be leaving it for now, but at least I know for next time.Thanks again
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