Tonia P Ione , CA July 27, 2015 Appliance: Amana Free Standing Microwave ACM2160AB Amana Countertop Microwave Acm2160ab: The support roller dial was broken. How to replace Microwave Oven Glass Tray Support. The new part that I ordered from you fixed the problem, I was very satisfied with the part, and the short amount of time it took to get it.. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes