But when they start making noise, you’ve basically got a matter of days to replace it. Little over a week ago one of the front bearings on my truck started humming, and I was planning on replacing it this weekend. Just in time, too; this morning it was making the most disgusting noises. So not long after a complete brake overhaul, I was back in here:

Yeah, roller bearings aren’t supposed to do this:

dry as a bone and a disintegrated retainer. You can see one of the rollers flopped sideways. I’ve been through deep-ish water a number of times, I’m guessing contamination took it out.