Joined: Feb 2012
Posts: 19,353
Likes: 5,471
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
"and I hose down the bike before the next ride to get rid of the sand from the chain."
One possibility is that the hosing is at too high a water stream pressure. Not saying that this is the cause (and that's the problem with interweb diagnosis, we can't see you doing whatever) but if the hosing off is at a high pressure level then you could blast water into the bearings. Once there the clock is ticking. Andy.