Fabian M Tomball , TX September 19, 2014 Appliance: Frigidaire Dishwasher FBD2400KW3A Frigidaire Dishwasher Fbd2400kw3a / : Lower washer arm had come off (small kid) and partially melted on drying element. How to replace Dishwasher Lower Spray Arm With Heat Shield. Snapped off the old part and snapped on the new one. All of two minutes. 88 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes