I finally got to the bottom of that weird Maytag washer hum
Had a customer in Springfield with a 5 year old Maytag front loader making a low hum only on the spin cycle. Spent three hours last Tuesday checking the usual suspects, motor, belt, bearings, nothing. Then I remembered a forum post about the spider arm support cracking on certain models. Sure enough, with the drum out, there was a hairline crack you could only see with a bright light. Replaced the whole spider assembly, part number W10835648, and the hum was gone. Has anyone else seen this specific failure on the MVWX655DW model?