Well if you are wondering about the rear wheel bearings that would be correct, you do not pack them they are lubed by the differential oil. After the hubs have been re-installed be sure to top off the differential oil then jack up one side at a time and let each side sit up on the jack for a bit this will cause oil to flow to the low side hub. When finished lifting each side top the diff off again.
The front bearings need to be packed with grease.
