On start up my 20;yr old dryer would emit a very loud squeaking noise for a few minutes. After watching AppliancePartsPros.com movie clip on repairs, I ordered & replaced the Idler Arm pulley, Drum belt, and Rear Drum Bearing. The problem was definitely the rear drum bearing, which had no grease in the socket. What do you expect after 2 yrs of faithful work! Now my trusty dryer purr’s like a kitten again! The other night I couldn’t even hear it running!