The plastic exhaust blower wheel cracked in half across it's width and several of it's blades shattered as well. The dryer was running when it happened. As far as I can tell the motor was still operating. Do these wheels usually crack due to age/wear or is the motor itself more likely to be the problem?

Thanks denman. I'm pretty sure the motor is fine. I was actually standing a few feet away from the dryer when the wheel broke, I was able to shut it off within a few seconds. It didn't have time to trip the fuses. I've made several repairs to this dryer over the years, it just may be time for a new one. Although I might make the repair and keep this one for my hunting gear. Thanks again.

Yeah, I already did that. Based on that cost and the cost of previous repairs I'm leaning toward a new dryer. But it may make sense to do the repairs just to use the dryer exclusively for scent control clothing. Convincing my better half is the real issue. Thanks again.