Work trailer axle servicing and bearing care
https://wiki-saloon.win/index.php/Work_trailer_axle_servicing_and_bearing_care
I do a full axle teardown on my work trailer each spring, checking bearings for pitting and repacking them with fresh grease. It stops those annoying hot hubs during long hauls and keeps the trailer tracking straight. Seals go in new to lock out dust and moisture, and I always check the spindle nut torque before hitting the road.