Product review (5 stars): It is easy to unscrew the blower blade from the fan
Used this motor to replace a Whirlpool 279787 Drive Motor.

It is easy to unscrew the blower blade from the fan, just make sure you see how the threads go, then use a wrench or vice grips on your old motor to hold it in place. Gently unscrew the fan blade.

This motor needs to understand to turn off if: the bent breaks, the door opens, or you get super high temps in the dryer.
It does this ( in mine) by a blue control wire. This is the wire that goes into arm for the belt holder.

As a quick and dirty fix, what did was i CUT the blue wire for the molex plug that goes into the motor about 6 inches away from where the plug is. This way if i was wrong, it was an easy fix.
Then i hooked one end going from the controls into one arm of the arm for the belt. They other end coming from the belt arm went into the wire going into the molex plug that was going to the motor.

Think of it as just extending that blue wire  going from the cut 6 inches away from the molex, all they way through the system to the belt arm, the dryer door, and the high temp, before it goes to the motor. This way if any of the 3 safety items fail, the unit turns off. ( Door opening is consider a fail for this :P  )