David G Greenville , NC December 15, 2014 Appliance: LG Dishwasher LDF6920ST Lg Dishwasher Ldf6920st: One dishwasher lower basket roller was missing. How to replace Lower Dishrack Roller. Installed a new roller that I ordered, it fit perfectly. I ordered 2 extras for down the road... Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes