I replaced the drive belt, and re-tightened the motor. I ran a small cycle to see if I fixed the problem. It filled fine, but when the rinse cycle started, clank sounds occurred. I emptied the washer manually, and tipped the machine. The motor had slipped, and the belt came off. The plastic pulley head had busted, but the shaft is ok. Appliancepartspro.com said that the pulley is part of the motor. Do I need to purchase a new motor???