Interior window dirty (sealed unit; unable to clean)

Using exploded view and previous customers' comments, I disassembled the door. It was primarily a matter of finding all the screws. I recommend taking the door off first (I didn't), but watch your fingers. The hinges have very, very strong springs and you can hurt your or your helper's fingers if you're not prepared. The hardest part was keeping all the insulation in place while your're installing the assembly. I also replaced the gasket. That takes four hands, two to hold the gasket in place and two to reinstall the window assembly. To put the door back on the hinges, I pulled them out from the door at a 45-degree angle (takes some effort), put screwdrivers through holes in the hinges, and guided (with help) the door back on.