This series of pics came up on another forum, and I thought a few on here may be interested. They show a Superwinch X9 winch which has had the gearbox housing sheer in half whilst in operation. My first observation about the pics below, was what appears to be a complete lack of grease in and around the gear set and housing.
If you have a winch which has let you down at some time, give us a bit of a description of the failure, and what the end cause was, as well as the cure. Don't forget to include the brand of the winch so we can get some idea if each problem is specific to a particular brand, and to help potential and present owners to narrow down any inherent problems, and maybe be a little proactive in reducing the risk of it happening to their winch, and leaving them stranded.