Washer-dryer combo produces a high-pitched squealing or grinding noise during spin.

Safety first: Unplug the unit before spinning the drum by hand or removing panels.

Steps to evaluate:

• Manual spin test: Rotate the drum by hand with the machine off. Listen for grinding or scraping and feel for roughness.
• Check for play: Gently lift the front of the drum up and down. Excessive movement suggests bearing wear.
• Inspect belt (if applicable): Remove the rear panel and check the drive belt for fraying or glazing. Replace if worn.
• Look for foreign objects: Shine a flashlight through the drum holes to see if any metal objects are lodged between the drum and tub.

When to stop: Bearing and seal replacement requires complete tub disassembly and special tools; this is typically a job for an experienced technician.