Josef B Phoenix , AZ February 03, 2026 Appliance: Maytag Washer- Horizontal Axis MAH4000AWW Maytag Washer Mah4000aww: Old pump was noisy and stopped working. How to replace Washer Drain Pump Assembly. Opened the rear panel, disconnected drain hoses and removed mounting bracket with defective water pump. Replaced the defective pump with the new one in the mounting bracket and reinstalled everything on reverse order. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes