How to Troubleshoot & Replace Whirlpool AP6012274 / WP8268874 Lower Spray Arm Assembly (With Shield)

I ordered a replacement lower spray arm and the required bearings. AppliancePartsPos.com responded to an email, asked for a picture of the part, and told me which bearings to order. Once the parts arrived a day later, they took less than 3 minutes to fix. Appreciated the help, attention to detail, and customer service! Saved me loads of money. 

Replaced upper and lower spray arms. Very easy repair. Dishwasher working much better now. 

Your kind people directed my to the proper repair parts( I was about to order the wrong ones) they double checked my order and i am thankful they did 

Bought the replacement spray arm and upper and lower nylon bushings 

We replaced the spray arm and the upper and lower bushings. The spray arm nut was fine. 

Bought a new spray arm and radial ring bearing, undid the thumbscrew, replace them and screwed it back on. That easy.