Mark K Newark , DE November 10, 2017 Appliance: Maytag Undercounter Dishwasher MDB8959SBB0 Maytag Dishwasher Mdb8959sbb0: Dishwasher was leaking from the lower left corner. How to replace Dishwasher Door Gasket. Purchased and replaced the door seal, also cleaned the spray arms and lower door seal while apart. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours