2 Pumps of Grease every 10,000 miles or one year.
Remove the ruber plug & find the zert (grease Fitting) on the end of the Hub. Hold the grease gun firmly on zert & apply two pumps, your done. The grease flows through the center of the spindle to the inner bearing then on the outside of the spindle to the outer bearing. Over greasing could cause flow through the double lip seal & into the brake area