Robert L Lyons , NY December 03, 2019 Appliance: Kenmore Dishwasher 63016303406 Kenmore Dishwasher 63016303406: Dishwasher leaking on floor. How to replace Center Spray Arm And Tube Assembly. I replaced the filter which was clogged with mineral deposits and other stuff. I also noticed that both sprayer parts (upper and lower) were somewhat clogged too, so I also changed those. BTW -- Not only were Appliance Parts Pros' prices less expensive than other appliance sites and even Amazon, but the total cost including shipping was also $10 less than if I had ordered using Prime, and I received the parts days faster! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes