Jacob J Austin , TX November 16, 2020 Appliance: Maytag Dishwasher MDB4949SDM2 Maytag Dishwasher Mdb4949sdm2: Circulation pump grinder had broken was making noise and not cleaning well. How to replace Dishwasher Circulation Pump And Motor Assembly. Diagnosed with one of your videos online, ordered new pump and replaced as in video. works great! Be aware you need to have pinch clamp pliers or a suitable substitute to install. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes