Posted 2017-11-03 11:02 AM (#170801 - in reply to #169458) Subject: RE: Packing Bearings
Location: Wentzville, MO
I'd recommend inspecting/repacking yearly. Since bearings, races and seals are pretty inexpensive (but the damage caused when they fail is not), I replaced them every two years, whether they needed it or not merely as a precaution. Since I had the hubs pulled anyway, and the grease seal is usually damaged when it's removed, it just made sense to me to replace everything while I had it apart.
For those unfamiliar with the process, using this link will take you to a video showing how it's done.