Marjorie S Garden City , KS April 26, 2020 Appliance: LG Dishwasher LDF7774WW Lg Dishwasher Ldf7774ww: The nozzle assembly and guide assembly on the middle rack of my dishwasher needed replacing. How to replace Dishwasher Dishrack Guide Assembly. I ordered a new guide assembly and nozzle assembly. When the new parts arrived, I was able to easily remove the old guide assembly from the rack. It was so easy to snap the new guide assembly in place and then attach the nozzle assembly. Love having a working dishwasher again. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes