How to Troubleshoot & Replace Whirlpool AP6012921 / WP8531743 Float Switch Base Gasket

1.) Water Leaking from Pump Motor and Motor Assembly/Housing; Suspected old O-Ring & Separation of Motor and Assembly. Replaced Pump and Motor Assembly, because the motor over time separated from the housing and was slowly leaking onto the floor. This replacement resolved the issue and wasn't too difficult. I did have to have my wife help install the 3 plastic holders (from underside) while I held the unit in place from the inside. Everything went very smooth and no leaks now. Tools: Philips Screw Driver and Pliers used for this repair. Repair video was spot on. Special Note: I would suggest putting a blanket or towel down with hardwood floor so no scratches and also to help collect any water from assembly or drain hose when removed. 2.) Water Leaking from Float Body. Small Leak from the float assembly that would drip when the float arm would go up and down. It appears the gasket over time thinned up from heat cycles and was a lot flatter than the new gasket. The new gasket created a much better seal. Everything went very smooth and no leaks now. Tool: Pliers for this repair. 

I was a little skeptical at first, but I decided to replace all the parts I could that had to deal with the float system. Since replacement, I have not noticed any more leaks under my dishwasher. The parts fit perfectly and were correct. It was great to order off the picture schematics provided to make sure I ordered the correct parts. 

Ordered 3 parts and installed per video on this website. Great site. 

Replaced worn out washer 

Had a leak in the front right corner, replaced the washer, and cleaned the area. So impressed that AppliancePartsPros.com had an entire video on how to replace this small washer. Honestly, the old one did not look that bad, but I did find grime and gook under the float... Not 100% sure the washer was the issue, it could have been. Bottom line, replacing the washer and cleaning up the area solved the water leak. AppliancePartsPros.com and their repair videos have saved me so much time and $$ over the years. 

The problem was the Water Level Float. The youtube video from AppliancesPartsPros was great to show how to identify and fix the problem. Even how to test other parts of the system, like the float switch, to isolate the problem. 

Replaced a number of parts in the drain and switch assembly 

The fix worked great. Just follow the videos.