I went on Dexter's web-site they also confirm the frequencies on adjusting the brakes. I have attached a you-tube link that shows how it's done....thank God for you-tube! I also attached a link that takes you to Dexter's site which has some neat videos that illustrate how to properly grease the E-Z Lube axles without blowing out the seals and has some other neat videos to make your suspension better.
E-Z LUBE - What is the E-Z Lube option?
The E-Z Lube option was designed specifically for the marine application where the axles are constantly being immersed in water. This feature provides a convenient method for purging the water from the hub cavity without having to pull the hub every time. The hubs should be removed every 12 months or 12,000 miles to inspect the bearings and it is imperative to replace the seal at this time to assure that the grease does not leak out the back onto the brake linings rendering the brakes non-functional
BRAKES - How often should I adjust my brakes?
Dexter recommends that manual adjust brakes be adjusted . . . 1) After the first 200 miles of operation when the brake shoes and drums have "seated". 2) At 3,000 mile intervals. 3) Or as use or performance requires.