very loud squeaking noise while running

First I unplugged the dryer then removed the two screws just inside the door along the upper edge. Top comes right off then there is a screw holding the front on at each side. Removed the front, popped off the old drum bearing, put on the new one. The four drum slides, which you need all four are placed at the top edge of the bearing two on each upper side. Vacuumed out the inside of the dryer, reassembled and runs like new!