Mark, If you look closely at the backing plate, there should be a rubber plug that you can remove to slip a screw driver or a brake adjusting tool in to adjust the brakes from the outside. When you re-assemble the system, write down which way the adjuster go to tighten, so there is no guess work later. I always forget. I don't think it is recommended, but I put a little anti-seize on the threads of the adjuster to keep it from rusting and seizing. Just a little, not enough to get on the brake shoes. You might be able to use that access to flush out the salt at the end of the season. I doubt that the stainless stuff is worth it. edit: There is a marine galvanized version: http://www.trailerandtruckparts.com/Gal ... p_486.html jim
I was just going to mention all the stuff that Jim just said (access hole, galvanized version, anti-sieze on the adjuster) but was actually interested in the stainless version. I don't like the stainless and aluminum combination though.
I have found that if you need to flush the drums (I have too on my travel trailer since it gets into the mud and sand) I cut off about 3/4" from the lower section on the backing plate. That allows Dirt and muck to be flushed out with out the pain of removing the whole drum. Daniel