All you have to do is pop up the fan hub and apply oil directly to the fan shaft
I did apply some force to attempt to pop the hub off but it got to the point where it felt like it would break and I went the hole drilling path.. Can you give a little more detail? I have 9 of these cards so I expect I'll be doing this again at some point.
Thanks,
Tim
You should try to use multiple screwdrivers to pry up evenly on the hub, maybe next time I have to do it I can make a video. It works on the squirrel cage centrifugal fans on the reference cards too.