If you open the door you should see some screws in the top inside jam which hold the top of the dryer to the cabinet. Take them out and the top should come off. You can now take off the front by unscrewing the two screws that hold it on, and be sure to mark how the lid switch wiring and any other wiring goes. If you take out the back service panel you can now release the belt, and then the drum comes out which will get you to the rear bearing assembly.

Good luck.