Screw

Because the lower cams are made out of hard plastic the repeated opening and closing of the door wore them out. The hardest part was taking all of the food that is normally stored in the door.

First step was to determine whether the screws were metric or US standard - they are metric. The next step was to remove the top hinge in order to remove the door and replace the bottom cams and brackets. This took a couple of minutes, replacing the cams was about 5 minutes and putting the door back on the pivot and reattaching the top hinge was another couple of minutes.

If I had called a service tech they would have charged a minimum of two hour and for the parts. I estimate that I saved myself about $100.