rumble from drum, hard vibration from drum

The parts to replace were mounted to the rear wall of the dryer and only the front pane is removeable. With the panel removed the drum had to be pulled carefully straight out. The belt and tention arm were difficult to reposition. Since you have the appliance apart replace both roller and roller support brackets one of which you cannot see from the front. Throughly vaccum all lint and roller wheel debris . If you have an air compressor take the time to blow out the motor . Make sure to rig a device to hold the tention arm back with the belt correctly aligned while sliding the drum back into place. PARTSLECT is great , easy to use and suggests other parts I may not have thought of and quick . Parts were here in 2 days standard shipping. I was in the dog house for putting this off too long. My wife is happy so I'm happy.