Agree. I had nasty grit fall on us from several draw bridges during one spring delivery. It was the kind of black, sparkly stuff that’s sprinkled into bridge sidewalk paint or non-skid deck paint. It was very abrasive and blew around the deck like drifting snow. I cleaned and lubed the winches before the first sail that year.It depends a lot on conditions and usage. My boat is stored inside in the winter, but we had some severe wind storms that blew beach sand right through the gaps in the 100 year old barn-like boat shed walls and onto the boats. My boat was really sandy, and the winches weren't covered.
I think it is prudent to service them, in case sand penetrated. That will dramatically accelerate wear.
Unfortunately our Harken 46.2 and 35.2 winches have two sets of pawls, both riding inside inner gears, so it takes pretty much complete disassembly to check them.I think you can make a case for just lifting the drum and inspecting/lubing the pawls/springs. Easy to get to, fast, and the most critical, and I think, wear-prone parts (in part because they are only lubed with machine oil). Do that every year. Then do a full cleaning/lube when what you see suggests it.
Absolutely, quite common, similar 2-speeds on my last boat, and the two speeds on my current boat are similar. However, the condition of the top pawls is still an indicator. That was my point. Perhaps the most common serious winch failures result from either broken springs, sticky pawls, or worn pawl seats. Thus, I pull the tops every spring to decide if they need a complete service. It also seems to be the top pawls that go first. Greater weather exposure?Unfortunately our Harken 46.2 and 35.2 winches have two sets of pawls, both riding inside inner gears, so it takes pretty much complete disassembly to check them.
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This makes sense!winch covers help keep the lube in place during the rainy months