Michael D Moseley , VA May 23, 2015 Appliance: Samsung Washer WF328AAW/XAA-0001 Samsung Washer Wf328aaw/Xaa-0001 / : Drain pump bad. How to replace Washer Drain Pump Assembly. Pull off the back. The drain pump is right inside attached to the base, just disconnect, remove clamps....have a tray and a few towels available there will be some water, unscrew 3 screws and pull out drain assembly , replace with the new pump. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes