Sandra S Iron , MN November 18, 2016 Appliance: Samsung Washer WF448AAP/XAA-0000 Samsung Washer Wf448aap/Xaa-0000 / : Bought the samsung vrt wf448aap second hand supposedly worked would not drain nd error. How to replace Washer Drain Pump. I opened the lower filter door. Opened the little drain tube and drained the tub. Opened the filter and about 3/4 cup of beach sand came out. I ran the rinse and spin cycle thru four times;each time more sand came out, but had to drain it with the small hose each time as the pump would not operate. I assume it was damaged by the sand. Removed the pump assy and then unscrewed the pump. Using my multimeter, I checked resistance across terminals of pump. 12 ohms. Expected to see about 150 ohms. Put the new pump on when it arrived and reassembled machine. Works great!! 14 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes