I think the majority of members would caution you NOT to use the EZ Lube system. Although you'll find an occasional person who says the system is "great and works well" for every one of those, you'll likely get 10 who say, "Screwed up my brake shoes, magnets and I lost all braking".....
Dexter and Lippert (axle manufacturers) suggest repacking the wheel bearings with a visual inspection annually as well as an inspection of the hub for corrosion/abnormal wear. The only way I've found to perform that kind of maintenance and inspection is to disassemble the hub.
So, if you've got to disassemble the hub anyway........
Here's the link to the Dexter Maintenance Recommendations:
https://www.dexteraxle.com/docs/defa...4.pdf?sfvrsn=0