So you understand the way your hub work, let’s have a look at this The hub is made with the body which goes around the axle, With cups, where are sitting the bearings The cône, which holds the bearings in place And finally the locknut which will prevent the cone to screw out of the axle. The main idea is to remove the locknut and the cone and then the bearings To clean it all, put some new grease and put it all back together First, please note that i’ll be doing the task on a litle bike wheel but the way to proceed is the same for all types of bikes and wheels Obviously the first thing you’ll have to do is to remove the wheel If you are taking care of the rear wheel, also remove the gear cassette If you have a MTB, i strongly advise to remove your dic rotor since you definitely dont want any grease on it To do this job, you’ll need a cone wrech like those, A normal flat spanner A wire wrench like this one, Grease, And degreaser You can also grab a magnet, so it’ll be way eaier to remove the bearings, but it’s optional. Grab your cone wrench Hold the cone in place, and unscrew the locknut out of the axle. Do this only one side. You dont need to do both, since the axle will slide off the hub. You can now remove your cone Grab the magnet (or a flat head screwdriver) and take off all the bearings of one side And wrinte somewhere how many there is You can now remove the axle from the wheel Be really carefull while doing this Because you dont want to loose any of these litle balls, belive me 😀 Make sure you didnt forget anyone on the cups. And the clean it all with degreaser : cups, bearings, axle… It has all to be clean If your bearings looks good, you can re-use them, hoever you’ll need to replace them. Be carefull to buy the correct size Now, add a generous coat of grease on both cups The more there is, the better it is. It will stcik the bearings in place. Using your wire wrench, put the right amount of bearings in the cups. Do it on both sides. Grease the first cone (yeah i did a mistake while recording^^) And then carefully put the axle back in place. Be really carefull not to push any bearings ! Grease the other cone And screw it on the axle untill the axle has no play at all, but wheel can still move freely. Then, put the locknut back, and double check if there is still no play and can still move freely. If its ok, thight… (im gonna find it^^) the locknut firmly And if not, adjust it untill there is no play and free move ! And thats done ! This is how to service a hub. But your disc rotor back if you have one And re-install the wheel on your bike. I’d also like to apologize for 3 things… First i know that my mic is not the best one, i’ll soon buy a better thing Since this one is from my camera… I alos apologize for the brightness which was not the best at all. I’d also like to apologize for my (sucky) talking level, im not really comfotable in english (as you saw x) ) And well i hope you understood what i said (thanks subtitles :D) and… Thanks for watching !