Lg Wall Oven MT4155SPB Parts

This turntable roller ring sits beneath the glass tray and provides a smooth rolling track so the tray rotates consistently during cooking. Replacing a worn or cracked ring restores steady rotation for even heating and quieter operation.

• Supports the glass turntable and allows it to roll around the center drive
• Helps maintain smooth, level rotation for uniform cooking results
• Wear or damage can cause the tray to stop turning, bind, wobble, or make grinding noises
• Visible cracks, flat spots, or missing/damaged rollers indicate the ring should be replaced

• Disconnect power to the microwave before servicing
• Open the door, remove the glass tray, and lift out the old ring; clean the track area
• Place the new ring in the track with rollers facing down; reinstall the tray on the coupler
• Run a brief test cycle to ensure smooth, stable rotation

A protective plastic or resin shield that covers the microwave's waveguide or other internal components from food splatter and damage. Located on the interior ceiling or side wall of the microwave, it should be replaced if cracked, burned, melted, or shows signs of arcing damage.