Just did mine today. They also recommend turning the tire as you put the grease in. I can see where this would be a benefit and maybe help keep from blowing the seals. This was the first time for the suspension maintenance, had 2 grease zerts that were missing. Looked like they had ben lubed during assembly, so am assuming they weren't put in tight when installed.
Roger & Cheryl Full Time since 2002, RVing since 1975 2008 Chevy 3500 Crew Cab Dually, 2012 RW 36RL