All models received larger front wheel bearings and increased spindle diameter.
Learn about how to pack wheel bearings in this article.
Without grease caps, your wheel bearings simply wouldn't survive for very long out on the road.
They are mounted alongside the frame and cover the area down to the wheel bearings.
If you use them, your wheel bearings continue to work.
On further inspection, it turned out that many wheel bearings were slightly damaged.
This article will save you money by teaching you how to clean wheel bearings.
Check the owner's manual to see if the wheel bearings need lubricating.
But it could probably replace the wheel bearings in your cart that are running dry.
And then all at once he realized that his wheel bearing had stopped complaining.