Luigi G Bronx , NY October 28, 2017 Appliance: LG Washer WM3470HWA Lg Washer Wm3470hwa / 00: Water leaking at end of wash. How to replace Drain Hose. I thought the drain motor and pump housing were cracked, but it turned out to be the pump housing drain hose had a pin hole in it. I replaced the drain motor anyway because I had everything apart and it seemed very old. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes