Re: Winterize hubs?
Actually, a small amounts of moisture forms inside brake hubs when steel changes temps from one extreme to the other. And this natural moisture creates small amount of rust deposits on inside steel parts as well. The proof of natrual rust forms on the outside surface of automotive and trailer disc brake system surfaces as well. For example, let a vehicle brakes sit for 3+ months, remove its wheel hub and the brake parts has rust on them. At end of 3 "sitting months", one can clearly see nautrual rust on disc outer surfaces as well. Same natrual moisture and rust residue forms inside trailer brake drum hubs as well. This is because brake drums are NOT 100% sealed. Many people simply connect to their trailer each spring and drive away. And, they say to themselves, "no worry - the rust will grind off soon". It's true that brake pad contact area does grind the natrual rust off. But, what grinds the natural rust off its many other internal moving parts. And yes, natrual moisture forms in the inner bearing area as well. It isn't much bet its small amount does dilute its wheel bearing grease.
As stated in Dexter's formal maintenance schedule, pull / remove the hubs, remove any natural rust with a wire brush or steel wool and re-refresh with brand new wheel bearing grease. Just like the maintancne schedule states.
Besides this.... If one simply squirt/squirt their trailer hub grease zerk every 12 months without pulling the brake drum off, how can they be sure drum's inside parts are still ok? Heck, even our human teeth get visual inspections / cleaning every 6-9 months. Yet, some folks say "I haven't removed trailer brake hubs for the last 10 years". These folks scare me and hope I never buy their used stuff.
If wondering, it takes me 25 minutes to pull each wheel hub, do spring inspectons / cleanings, re-fresh grease and re-install the brake hub. Very simple DIY task (as shown in above U-Tube clips). Bet some folks spend more time on forums stating "why they don't do it properly". IMO, their time would have been better spent doing their trailer's brake hub annaul maintenance inspection / cleaning sessions instead...