I have a 2001 xt-10 triton and it has the special hubs that squeeze the old grease out and put the new grease in. The way the picture looks in my manual, the grease is pushed to the back bearings, then works its way to the front bearings. The old grease being pushed out by the new grease. I usually do mine 2 times each winter. I have about 3,500 miles on my trailer, and all is in good working order. I love the spring kit that keeps the front of the trailer up when you leave it.
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