Idler Pulley 279640

Using instructional video recommended by online repair tech, I disassembled the unit, removed drum, replaced all pulleys ( main drove pulley and drum guide pulleys).

Most interesting discovery was dryer manufacturer embedded a complete repair and calibration guide within a pouch at front of unit. Not mentioned in user docs, ... Read more but probably known to all onsite repost techs.
Unit has been working flawlessly a month after repair. Saved probably $150-200 in repair service labor.

Removed old pulley from shaft. The bushing was shot. Slid new pulley on put on new retaining clip. Put panels back in place. Attached dryer vent. Sounds and works like a new dryer

Turns out that the wobbling tension arm wheel let the belt slip off. For those who donGÇÖt know, dryers are built to stop working if the belt slips off or breaks.
The inside of the pulley wheel bearing had become excessively worn larger. The new part came with a washer and the retaining key that keeps it in place.
Slide off t ... Read more he old wheel, replace with the new parts, route the belt and the dryer works again.
Quick note about dryers: Clean the excess lint off the inside of the unit every so often. It will kill the motor from excess heat and it could also become a fire hazard.