Have an assistant, clamp down the outer flange of the boot and have Soldier B position the boot to allow you to focus on the inner clamp. I'll chime in as others have, have you ever performed the Annual Maintenance on the bearings? It's work for sure but it pays for itself with less downtime. My friend Welder1 asks me this question from time to time concerning my truck. My reply is "the grease was in the palm of my hand before it went all the way to the bearing race from the inside".