How to Troubleshoot & Replace Whirlpool AP6022331 / WPW10498900 Dishwasher Spray Arm

I replaced both spray arms since the old ones appeared to have spray holes obstructed with mineral deposits. I replaced the spray arms which required no tools. 

The tray was delivered with the back fence badly bent inward, as if dropped in shipping with some force. The tray was reshipped overnight and all the parts were replaced easily. 

Bought new one. Screwed it on. Done. 

Ordered replacement parts online. They arrived the next day. 

Appliancepartspros,com was once again amazing to work with. Their representative was very helpful. (I used the CHAT option) The parts came the next day! I was a very easy fix and no tools were required. 

Ordered part online 

Ordered new adjusters (Much better quality than original. Installation was very easy. Took less than 1/2 hour. Works great now! 

Looked up the part number on the Sears website. Did a quick search and found Appliance Parts Pro. Better price, faster shipping and delivery. I placed my order Friday morning, got my spray arm Saturday morning. Quick install (just gist off the old, twist on the new). 

Replacement