Greg S North Fond Du Lac , WI December 27, 2016 Appliance: Frigidaire Dishwasher PLDB998AC1 Frigidaire Dishwasher Pldb998ac1: Old rusty racks. How to replace Dishwasher Lower Dishrack Assembly. Ordered and installed replacement racks from appliance parts pros. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes