LG LDT5678SS missing gasket for lower spray arm

Dishwasher Repair
1

Brand: LG Dishwasher
Model Number: LDT5678SS
Main Symptom: Might be missing a gasket
What happens & when: The upper spray arms aren’t spinning. I traced the problem to a broken diverter motor. I already have this part in my cart. While troubleshooting that, I removed the lower spray arm assembly (AGB73932401) and noticed that there wasn’t a black O gasket where the spray arm assy plugs into the bottom of the dish washer. On a YouTube video I was following, the person showed a gasket. It’s less than an inch in diameter. I’m not sure if I need it or not, and if I need it, I can’t find a part number. Thanks for any help you can provide.

2

Not all videos are for the exact models. Unless you recently removed the lower spray arm and misplaced it, it was never there. If this problem just recently started, that gasket is not the issue, I believe you are on the right track with the diverter motor.

3

Thanks you! I’ve just ordered the diverter motor from you.