Try removing the inner drum from the outer drum. In most models, the bolt fixings are found on the outside of the inner drum. There is another way too that works for most machines. If you have a fabric softener dispenser, please remove it. Then pull the barrier cap up and off. A 9/16 inch hex head bolt will appear. Remove it. Then you will see the driven cam and the dogs are located under it. Once you find them, you can replace them.