Follow up…………
As I was removing the cluster from the tractor. I heard a rattling on the inside of the cluster. I opened the cluster, removed the tach/hour meter and found the capacitor had broken off and rattling around inside the cluster housing. The wires were too short to re-solder. I have a neighbor who is a retired instrumentation engineer that just happened to have a capacitor with the same markings. We soldered the replacement capacitor in place, reassembled the cluster and waa-laa we now have hour meter readings again. I don't know if anyone else has had this same problem, but if you have, you might try this repair.
I have been told that one can purchase this capacitor at your local radio shack. Sure hope this helps someone else.