as per Divemasters post I would still go through the big electrical cable connectors. I have had similar too in the past. I had a bow thruster that did the same and an anchor winch on a different boat. Although the connections are pretty big it doesn't take much corrosion to create a significant resistance at very high loads. I'd take them off one by one de grease with meths and clean them with wire wool. The stripper looks cracked but I don't think that's the issue
IMHO, the clicking is simply the chain jumping off the gypsy as it strains to wind the chain out. Again IMHO, if it was a sticky solenoid, it would happen when you were winding the chain in as well which it doesn't seem to do. Not something to particularly worry about but it doesn't do the winch any good. That component which is cracked looks like a support for the shaft and gypsy arrangement and the crack may have been caused by the chain jumping off the gypsy.
Its good practice to have the anchor chain hatch open when dropping the anchor just to check that the chain is coming up freely. You can usually see when a snag is about to happen and clear it before it reaches the gypsy
Its called a "stripper ring", this is what happened to one I had on a previous boat after a couple of weeks daily heavy usage. They are just not man enough imo. I replaced the part (bought in the US but sure you can find in UK) with a ss version, never had the problem again.
April 21, 2017
April 21, 2017