Richard S Boulder , CO October 25, 2015 Appliance: Maytag Dishwasher MDB4030AWA Maytag Dishwasher Mdb4030awa: Maytag dishwasher upper spray arm falling down. How to replace Wash Arm Retaining Clip. Retaining clip fixed the problem in less than a minute. The original clip had worn down (after 17 years) and would no longer hold the arm in place. Your videos are most helpful in putting one's finger on the problem and showing how to solve it. Thank you. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes