Dryer Is Making A Grinding Noise

The dryer recently started making a metal on metal grinding noise. I remove the back panel plate to check the belt and pulley. The belt did not appear to have any cracks or chuncks missing. The pulley was inline and did not appear damaged. I applied some lithuim grease to the pulley and did not help. What else could be causing the noise?

How do you remove the top of a Maytag Dryer DE303?

Can you OIL the Bearings? Sqeeking noise,

Jeff