Marvin W Joplin , MO December 26, 2014 Appliance: General Electric Dishwasher HDA3420Z01BB Ge Dishwasher Hda3420z01bb: Dishwasher leaking at shaft seal. How to replace Dishwasher Drain Valve Shaft Seal. Replaced shaft seal. Video showed exactly how to do it. Parts got here quickly and were everything I needed. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes