If your front wheels have center hub caps with a cotter pin behind, then you have grease-packable bearings.
I would definitely repack them during a front brake job and also replace the inner grease seals in the process. They are very cheap in price and are critical for lasting protection from water and other contamination. They come out during the grease packing process so just put in new ones.
When repacking, do one wheel at a time as not to mix bearings right to left side for they wear uniquely into their mating race.
