My reclaimed 1992 Timberwolf 250 2wd has been running fine for a couple months - but there was a new issue. One day it was only driving with one real wheel - jacked it up and the right side was floppy. Took the axle nut off and found the splines in the drum center hub were worn enough to stop driving - axle was ok but the iron drum splines were worn - needed a new drum.

But before springing for a new one ($125 or more) I decide to try using a filler material to "repair" the splines. Loctite makes a product 660 quick metal intended for repair of shafts and drive keys that have loosened. Some of its ads say it works on worn splines. I bought a $21 tube to give it a try.

After thorough cleaning with brake-cleaner the small tube had just enough to coat the splines of both drum and axle. The drum was fitted back on the axle and the nut was tightened. The material is a one-part high-strength plastic cures by anaerobic reaction with steel or iron, keeping the air away from it, which the tightened nut accomplished nicely. I wrapped some paper towel around the inner end of the drum so any excess squeezing out would not get on the brake shoes - any leaked debris would just tumble around in there harmlessly. It was allowed to cure for 3 days to allow for full hardening. Product manufacturer data for Loctite 660 quick metal here. Small quantity tubes are available on eBay, Amazon, etc.

Both wheels have been driving fine now for a couple weeks. If it remains strong, great. If it needs to come apart for any reason, heating the hub to 500 F supposedly releases it.