How to Troubleshoot & Replace Whirlpool AP5988875 / W10843811 Pump Diverter Motor

I replaced the diverter motor. Used videos on the web to walk me through it. I also "chatted" with the online help service by posting a question. They also sent me the service manual so I could run diagnostics. It was harder to get the unit out the quasi-permanent mounting to the cabinets than it was to actually replace the motor. Probably saved $200 and a week of time doing it myself. 

Replaced basin and diverter motor. 

Replaced the diverter motor which got the arms going. Getting to be an expert at that as this is the second one. Known leaking issue with them and they stop. Included was the needed grease which was a very nice touch. Also replaced the gasket on top with one from The Grommet Guru that will hopefully keep the leaks away as it has a spring inside it. Did not solve the vent error code with the vent part. Looks like the fan is corroded and have another on order. 

Ordered the piece I thought it was, put it in, no more leaks Thanks Mark G 

I REPLACED THE GROMMET WHERE THE SHAFT OF THE DIVERTER MOTOR PENETRATES THE SUMP PANEL. HOWEVER IT STILL LEAKED. I DETERMINED THE LEAK WAS ABOVE THE GROMMET. IT WAS ALONG THE METAL SHAFT WHERE THE SHAFT'S PLASTIC SHROUD ENDS ON THE METAL SHAFT, ABOUT HALF WAY UP THE SHAFT. I ORDERED A NEW DIVERTER MOTOR AND RECEIVED THE PART THE NEXT DAY, EVEN WITH STANDARD SHIPPING - AMAZING!. THE DISASSEMBLY VIDEO MADE IT EASY, SAVED $1200 ON A NEW DISHWASHER. 

Replaced the sump and diverter motor at the same time. A pretty simple repair just take a picture or two before you start, remove the wires and start removing the parts so you can remove the sump. Everything went back together very well and I have ran three wash cycles to validate no leaks before putting the trim kit back. Very happy. 

Replaced the motor and sump assembly because each of the shaft seals had failed. The seal inside the motor slid down out of position and the seal in the sump where the shaft motor goes through was suspect. Replaced both and the discharge motor seal. Parts were awesome. Delivery time awesome and everything works as it should. 

Ordered a new motor. Very easy to install- only 3 screws and 3 wire connections plugs. I saved so much money, and the replacement part was a factory upgrade too.