John S Santee , CA May 21, 2019 Appliance: KitchenAid 5 Quart Stand Mixer KSM500OB0 Kitchenaid Mixer Ksm500ob0: Motor was fine, but the worm gear was stripped and not working to spin the mixer. Also the mixer had no accessories. How to replace K5asb 5 Quart Kitchenaid Stainless Steel Mixing Bowl. I ordered the worm gear online with replacement Food Grade Grease and the mixer bowl, cap-hub, paddle, and dough hook. It took longer to disassemble the mixer than replacing the gear. Once all the old grease was cleaned out and new grease replaced; reassembly went very quick and smooth. Now I have a perfect running mixer like brand new. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes