First time I’ve see this. This is a Whirlpool design Maytag washer. Model MTW5920TW0. The customer complaint was that is was not spinning and was making a funny noise. I came here expecting to find a broken motor coupler – wrong! This is a testament to how tough the new style motor couplers are. The shaft of the motor was worn completely round inside the coupler. In the picture, you can see a good coupler with flat sides in the left. The motor shaft and the old coupler on the right are completely round.
New motor and coupler and she’s as good as new.