Hi, if you could post a link to a video or something that would be great. : )

Cheers
P.S. Shimano Disc brake hubs.

Shimano FH-M495

Blueprint of hub

Don’t have a vid but it is easy peasy. You need cone spanners and grease.
1 take the dust cover off.
2 undo lock nut with two cone spanners.
3 thread lock nut and next nut off until you can remove ball bearings
4 clean’em , grease ’em , put ’em back
5 tighten everything in the order they come off.
If you want to be really thorough when you have removed the lock nut and retainer nut pull the axle through and you will be able to do the freehub side bearings.
Front , pretty much the same really.

It’s not quite as easy as that.

You need to be very careful when you tighten the hub back up. If you over tighten the cones the hub will die quickly. Have a look on google there are some guides for doing this with pictures. Take your time, put everything back in the right order and don’t over tighten. It helps to have a vice to hold the axle when you tighten it up.

Once you’ve done it once it will be easy the next time.