Yes .... Like Jerry said, if your pulley is mounted on the Dampner and then bolted to the crank snout.....then they must move together as one unit!!
If you are spinning your Dampner into position, and the Pulley is not turning in sync with it, then the Balancer is definately garbage!!
Ford will sell u another junk one that will last a few years.........or BHJ has some with lifetime warrenty!!
What i am really wondering is why u would decide to spin the Dampner itself??? Usually the procedure is to Use a socket on the Snout bolt to set correct position!! I wonder if with all the weight and force maybe by turning the Dampner itself, maybe this caused the failure!!!
Also when Installing a new Dampner/Pulley.......Make sure they are Zero Balanced**very important** and use a new snout bolt!!!!
If you buy from Ford...they come together balanced as one unit for few hundred bucks!!!! With BHJ u must have ur stock pulley balanced onto the BHJ balancer!
To save a few headaches for yourself make sure you understand what zero balance is or you will be doing this job again very soon!!!! Trust me i know...lol