Hello everyone. Newbie joining up, but have been coming here for the occasional quick answer for years. Several years ago, my Fourtrax rear axle bearings were replaced and after just a couple trips through the mud and muck, water was getting inside the differential housing. I drained it and added new oil, but it wasn’t long before I heard a pop and what sounded like teeth breaking inside. I parked the bike and just haven’t messed with it in a couple years. People told me it was next to impossible to rebuild them where they would keep water out, so I began searching for an affordable replacement. After searching high and low for a wrecked bike to do a complete rear swap, I just decided to start tearing it apart to see how bad it was. Hopefully, by the end of this post, I’ll have it repaired (with the help of you guys) and someone else can benefit from the rebuild post. Here is the disassembly so far:
Rearend and swingarm have been removed. Left swingarm bearing was completely destroyed, so both of those bearings will be replaced as well
