The old belt was shredded and off the motor pulley

Removed the front two bottom screws of the front panel and rotated the panel upwards to remove; removed the top (not really necessary but much easier to access and clean) and leaned the top over on a table (keeping the wiring in place). Took off the front piece that holds the dryer tub, removed the dryer tub and cleaned all inside (it was filthy after 27 years).

To reinstall, put the belt on the dryer tub, placed the tub in position, put the belt on using the access panel in the back, and then installed the front part that holds the tub in place (4 screws, two on each side). Put the top back on (2 bolts) and then replaced the front panel.

The dryer still has a slight squeak so may be back for more parts. Should I have replaced the 2 rollers that hold the back of the dryer tub? They seemed okay, but we'll see.

Replacing any part will be easier the second time!