Snowblower repair question/thx for any help
I've got a Noma two stage snowblower and, when plowing last week, it just stopped throwing the snow out of the discharge chute. All the drive belts are good, it starts, runs and moves fine, the auger blades rotate fine, but the impeller doesn't move. The impeller is on a shaft that goes to a T-shaped gearbox that the auger shaft is also connected to. When the machine is off, the auger blades don't rotate freely (of course not, due to the breakaway bolts connecting them to their driveshafts) However, the impeller rotates freely on its drive shaft. This doesn't seem right - shouldn't the impeller turn only when the drive shaft turns?
Is there some kind of "key" or breakaway bolt that holds the impeller onto the drive shaft? Or could something - a gear? - have slipped in the T-shaped gearbox/transmission?