Mr. D Plano , TX November 14, 2016 Appliance: Samsung Dishwasher DMT300RFS/XAA Samsung Dishwasher Dmt300rfs/Xaa / : The lower swing arm kept popping out and the dishes would not get cleaned. How to replace Dishwasher Spray Arm Holder Nozzle. Replaced the holder nozzle and that resolved the issue. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes