Replaced inner glass, it took me forever to figure out how to remove the inner door. As it turned out there are two screws that attach the door to the hinges. Everything I search for on-line said lift hinge lock or put metal pins in and close the door. I guess my model is very old and I could not find a service manual that detailed the procedure either. Once the door was removed it was pretty much straight forward, disassemble, CLEAN, and reassemble. I don't know how dirty they normally get but I know clean when I see it. I would say R & R of the part about 1 hour. Cleaning to my satisfaction about 2 hours.