Answer Hello David. Remove the baskets from the unit. Then, 1. Remove lower rack from dishwasher. 2. Gently lift and rotate lower spray arm counterclockwise to remove. 3. Rotate nut hub counterclockwise to remove. Gently lift fine filter assembly up. Remove fine filter drain from sump. 4. Clean fine filter screen if soil is present. 5. To reinstall fine filter and lower spray arm reverse procedure. NOTE: When installing fine filter make sure the drain port of the filter is engaged with the drain for the fine filter. 6. Remove the main conduit from the unit. Read More... Answered by AppliancePartsPros.com | Friday, May 3, 2013