Philip B Westminster , CA June 04, 2022 Appliance: General Electric Dishwasher PDW8680N00SS Ge Dishwasher Pdw8680n00ss: Not cleaning well. How to replace Dishwasher Middle Spray Arm. Replaced lower and middle spray arms that were clogged and thoroughly cleaned the interior of the dishwasher. Replacing the spray arms took less than 10 minutes but thoroughly cleaning 10 years of neglect took much longer. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes