Hey all, just got a call from a buddy who has a 1996 F250 with the 460 and a 5 speed. He was leaving the store and his right rear wheel locked up, in both 4x4 and 2x4. all the other wheels are fine so I assume its not a 4x4 problem. We did get about 6 inches of snow today, so I wondered if he maybe got some ice in his drum and locked it up? I told him to hit the drum with a rubber mallet a few times, waiting to hear if that works. What else could it be? Thanks!