kellem wrote:
These threads pop up from time to time and always amazed by the responses.
On our 4th trailer and have yet to replace a wheel bearing using EZ-lube.
Simply Jack one wheel at a time and spin the tire while injecting grease.
Things to worry about.....proper tire PSI and roof maintenance.
I guess checking the condition of your brakes or adjusting them periodically is not on your list?

Just because you have EZ-lubes does not exempt one from making sure your brake shoes are not cracked, damaged or worn past legal requirements or making sure your bearings are in good shape.
So, in reality depending on the miles you are towing you really need to pull the drums every 12,000 miles or yearly which ever comes first.. That is what the axle manufacturers recommend which is ironically what they also recommend for greasing and checking the bearings condition and adjusting the bearings.
Bearings do wear which sometimes requires resetting them back to specs and periodically inspecting them for pitting, rust or heat damage can save you from losing a wheel while traveling..
On edit..
Per Dexter Axle manual
HERE on page 44 they have a complete maintenance schedule chart..

Click For Full-Size Image.