How to Troubleshoot & Replace Whirlpool AP6019912 / WPW10340527 Lower Spray Arm

Replaced spray arms and tube. Found all had debris in them and prohibited water pressure from reaching items. After replacement everything comes out sparkling. Don't understand how the spray arms getting plugged. Almost like waste water is recycled. Turns out to be a very easy project and if needed AppliancePartsPro has information and directions available at your finger tips.! 

This is a simple fix on my Whirlpool, the spray arms are removable with a twist nut mounting, I just twisted the new arm's mounting nut on the spindle mounting. I was pleased with the quick service from apliancepartspros.com, I received the new part in just a couple of days. 

I looked up the model number and ordered a new one 

I followed the excellent repair video from appliancepartspros.com. 1. DISCONNECT POWER 2. Remove the bottom rack and unscrew brackets from the countertop. 3. Pull out the dishwasher and tilt it back. 4. Disconnect the leads to the heating element underneath (look out for the 2 plastic disc seals) 5. Unscrew the plastic nuts connected to the element 6. Remove the old element and place the new one through the holes (mind the brackets that hold the element in place above the tub.) 7. Screw on the plastic nuts and place the disc seals back on. 8. Replace the leads 9. Push the dishwasher back under the countertop. 10. Replace the bottom rack and refasten the countertop brackets. 10. RECONNECT POWER 

Bought new spray arms ! 

Ordered a new set of arms. Having a locking screw made them easy to switch out. Going to keep this in mind and just replace every couple of years. Thanks so much!!! 

With a new spray arm. 

Replaced all the parts with the videos provided by appliance parts pros! I love this site!!! 

Ordered new spray arms, problem solved. 

I replaced the sump cover and also replaced the lower spray arm to ensure I resolved the issue.