Stepnen B Madison , AL January 11, 2017 Appliance: Whirlpool Washer WTW7600XW1 Whirlpool Washer Wtw7600xw1: The drain pump was not working on my clothes washer. How to replace Washer Drain Pump. I purchased a new pump from Appliance PartPros and replaced the pump. The hardest part was working with the hose clamps in very small areas. It worked great when I was done. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes