I'm going down to South Royalton tomorrow to help a friend clean out debris and mud from her house--the White River came up and filled it with water about 4 feet above the first floor. Among other things, I said I'd bring her bike back here and clean it up and get it running again.
It occurs to me, though, that I don't know exactly how much I should plan to do. It was probably completely submerged for a few hours. In addition to generally cleaning it of mud, lubing the chain, etc., I was also expecting to tear down and lube the headset, ditto for the hubs. Or is that overkill? What about the bottom bracket? I assume it's a cartridge BB. Is that likely to be sealed well enough that I can just remove it, dry it off, and reinstall it? Or should it be replaced?
Should I replace the cables and casings? What about the shifters? I haven't seen the bike, but I know it's a nearly new hybrid of some kind--probably has some flavor of flat-bar shifter. That's something that I don't have a whole lot of experience with, being a vintage road-bike type, but I imagine I can figure it out easily enough. Do I want to tear them apart? They may have been above the water level, I don't know, it may be obvious when I see the bike.
It's possible that the bike may even have an IGH hub--I know a previous bike of hers did, though I think this one has conventional derailleur gearing. Oy! What do you do with an IGH hub that's been submerged in muddy water? I could dismantle it and clean it--I've done that with a couple of Sturmey-Archer AWs, so it doesn't intimidate me-but I'm not sure I want to get into such a time-consuming project.
Or maybe it would make sense to clean things off superficially, drip some oil here and there, and see what problems, if any, develop later, and fix them as they arise? Fixing them later would presumably be no harder than fixing them now, and if no problems ever develop that's a lot of effort saved.
Or should she just call the bike a total loss and see if the insurance company will pay for a new one? Hoping that someone has some good insight--and maybe firsthand experience--with this kind of stuff.