“Changing belt on Whirlpool dryer” is the right search phrase when the symptoms match, but you should still confirm. Other faults—like a worn drum roller support, a failing drive motor, or a broken idler pulley—can mimic belt-related behavior.
Start with the simplest checks. With the dryer empty, attempt to rotate the drum by hand. Many Whirlpool models let the drum spin freely when the power is off. If it drags, there may be roller wear. If it feels resistant but the belt isn’t obviously broken, you’ll want to inspect further.
Signs the belt is the culprit
The drum won’t spin even though the dryer motor seems to start.
Squealing or slapping noises during operation that may align with belt slip.
A belt that looks cracked, glazed, frayed, or shiny in a worn spot.
The belt appears loose or misaligned after you access the interior.
If you spot obvious belt damage, you’re on the right track. If you don’t, don’t assume. A few minutes of inspection can prevent the frustration of installing a new belt only to discover another failed component.