I determined that the cam riser had broken into two pieces. Finding the part was easy on the diagram on the website. It arrived less than 24 hours after it was ordered.
Top hinge was removed and the door was placed on a set of horses. One bolt was removed from the bottom of the door, the pieces of the broken cam riser were removed and the new one installed. Door was replaced and top hinge rebolted. The door was off for about 5 minutes.
I was very pleased with the service of Appliance Parts Pros.