I found the bolt which holds the harmonic balancer on the garage floor this past wekend. I was backing the car out and heard a strange sound, it was the bolt flying out from under the car. There are three washers along with the bolt. Two of them are flat and the other is a belleville washer. I looked on the service manual CD and it talks about three belleville washers. I am not the original owner of this vehicle. Does anyone have any experience with this set up? It looked like the previous owner had the belleville washer with the "cone" facing the crankshaft. Any advice would gladly be appreciated.