Product review (1 stars): Spring rusted away in less than a year.
These are not OEM quality. Mine was junk in a year. There were two major failures.

First the chopper blades don't ride on the screen so no scissor action on food particles. You shouldn't have to clean this part if it is functioning correctly. I did, so I tweaked the blades so that they would skim the screen. This requires a careful bit of bending because you want the whole blade to be skimming the screen. Worked great...

Then it stopped working again. This time with a terrible grinding sound. I opened the dishwasher up and discovered that the spring that puts a little pressure on motor coupling and blades to the screen was gone. Rusted away. It won't work without the spring.