Ronald M Chino Hills , CA September 07, 2015 Worn worm gear As preventative maintenance, replaced worn worm gears and re-greased two units used in a bakery. All grease must be removed if contaminated and replaced. Also, the repair requires snap ring pliers to remove main shaft clip. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes