Dryer drum would not turn

I first removed a vent cover in the back where the idler is located. With pliers I removed the tension off the spring. Next I simply slide the idler off the post. I pulled up on the top panel which opened like a clam shell. I used a flat blade screw driver to separate the front panel from the dryer so I could slide the new belt around the drum. I reversed the steps. All in all it was easy. It took me about 30min including cleanup.