Timothy M Atascadero , CA April 20, 2026 Appliance: Model MHW6630HWO Water pump Drilled a 4/1/4 inch hole in the front for regular cleaning access and went through the back. I did not remove the front of the unit because it is a stacked. Read More... Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours Tools: Nut Drivers, Pliers, Screwdrivers