Billy P Derma , MS December 24, 2015 Appliance: Samsung Dishwasher DW80H9930US/AA-0000 Samsung Dishwasher Dw80h9930us/Aa-0000 / : Water wall movement assembly belt had broken. How to replace Assy Motion;Dw9900h,Comm. Water wall movement assembly . Removed two screws at back of the assy. Raise the assembly slightly from the rear, then slide it back about one inch. Removed it, reversed the process. Entire job took about 5 minutes to complete.. 17 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes