The tray evaporator developed a leak due to rust.

Using the parts list that came with the refrigerator, I ordered the exact replacement part. First I removed the single nut that holds the tray onto the top of the compressor with a standard wrench. Then I carefully removed the pan filled with condensate taking care not to damage the coils. I then inspected the area and wiped off the dirt. I inserted the new evaporator tray carefully into position. The tricky part was starting the nut that secures the pan because of the confined space that I had to work in. Long fingers worked the best. After 3 attempts I was able to start the nut, and then I finished it off by tightening with the wrench. It is best to keep the parts list that comes with your appliances.