Frank H Sunman , IN July 10, 2016 Appliance: Samsung Dishwasher DMR78AHS/XAA-0000 Samsung Dishwasher Dmr78ahs/Xaa-0000 / : Top dish washer spray bar kept falling off. How to replace Dishwasher Upper Nozzle Holder. New spray bar and holder attachment 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes