Noisy blower wheel

I first unplugged the unit, unlatched the top cover, removed the wires for the door switch, then removed the two screws securing the front panel. I "propped open" the top lid with a 2 by 4. I then lifted away the front panel, removed the blower housing screws to expose the blower. Then I removed the snap ring on the blower shaft, the clamp holding the blower wheel in place, and slid the blower wheel off the motor shaft. Reassembly was in the reverse order. Was very easy.