Took off the back access panel and found the bolt that holds the rotor was loose. I ordered a new rotor because the spline was worn off of the hub. It arrived in two days and I took 20 min. to replace it and tightened the bolt real well. I slid the washer in place and tested it. It spun up to 104, so I stoped it and washed some clothes. All i9s well in the universe once again!