Daniel R Tacoma , WA November 15, 2015 Appliance: General Electric Dishwasher GSD5630D00WW Ge Dishwasher Gsd5630d00ww: Originally it wasn't draining properly; also discovered a leak in the pump motor assembly. How to replace Piston & Nut Assembly. Once I tore it down found the drain check valve, and both flapper valves had deteriorated. Replaced the Pump Motor body and assembly, the check valve, and both flapper valves. Reassembled, reinstalled; works great again! 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes