Wow thank you Ajax Bay for the step by step guide. Seems fairly straight forward enough to follow that walkthrough.Think I'll give it a shot and see how i get on and if it fails, take it to LBS.
Just for clarification, can the cassette and disc rotor remain on the wheel whilst i service the bearings or do I have to remove it in order to proceed?
Thank you
You need to remove the cassette.
Have a look at this
https://www.parktool.com/en-int/blog/repair-help/hub-overhaul-and-adjustment