Stephen W Ocean , NJ July 20, 2020 Appliance: Magic Chef Dishwasher CDB6100AWE Magic Chef Dishwasher Cdb6100awe: The upper spray arm was falling off inside the dishwasher. How to replace Dishwasher Spray Arm Retaining Nut. I called customer service for Magic Chef dishwashers (MCA Corporation). I spoke to an actual person rather than a recording, which was THRILLING. And HE KNEW WHAT HE WAS TALKING ABOUT! He helped identify my problem, directed me to AppliancePartsPros.com and told me which parts to order. I paid about $11 for the arm and the nut, it arrived in a day or 2. It took me about 5 minutes to install it without any tools and it works perfectly now. It cost me $11 and 5 minutes to repair my 18 year old dishwasher. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes