RW964

Hello I have looked and forund a long time ago the bearing size for the Cond Fan for my 90 C 2 but search does not pull it up now .. My fan bearings are starting to make noise and just a matter of time......So can you replace just the bearings and if so what size do I need as when I take it apart I would like to have everything needed to reinstall at the time along with the Ballaast Res... Thank You