Spider arm is broken. Mine would viabrate and not spin fast enough. Also i would get a ND code from corrosion from the spider arm. Metal flakes and grimp would clog the fliter amd jam the pump. After 3 of 4 times doing that it got worst to the point i couldnt fininsh the spin cycle i took the machine apart to see what was causing the viabration and pump to jam up and it was the spider arm was corroded and broken.