First the washers top agitator started banging the top of the lid, than the top agitator stopped agitating. The seal from the barrier cap came off and is now stuck in the bottom, around the gap of top of the bottom agitator.
You will want to pull the agitator out and separate the upper and lower agitator to get the seal out from in between the 2 pieces. The seal part number is W10072840. For the agitator moving up and down it sounds like the bolt that holds the agitator in place may have backed out and allowed the agitator to move up and down on the drive shaft. You will want to get a little lock tite to make sure that the bolt does not back out and make sure that it is in tight. If the agitator is still not moving after replacing then it sounds like you may need new agitator dogs 80040.
Answered by AppliancePartsPros.com | Tuesday, April 29, 2014