Unplugged oven electric and turned gas off. Removed all back covers from the unit. Removed the cover on the inside covering the burner and fan in the back of the convection oven. Removed the nut securing the fan to motor shaft with helper holding the motor. Removed the three electrical wires attached to motor, making note where they go. Removed screws mounting the motor to oven. Removed motor cooling fan and shaft spacer from old motor. Fit in same orientation on new motor. Replace all parts in reverse order, restore gas and electric, turn on and test.
We had made this determination with the help of a repairman on the phone. I ordered the part and waited for it. It was stuck in West Virginia. After several days after it was expected a repairman fixed my range to the tune of $168. It should have cost $30 (the cost of the part and shipping). Unfortunately I probably won't order from PartSelect again.