I first listened carefully and noticed that during cycling, the electric motors could be heard starting, stopping, and apparently running normally during both wash and emptying cycles. However, no water was being pumped around during the wash cycles, while emptying (which uses a different motor) worked normally throughout all cycles. Thus it seemed to me that the electronic programming was working correctly in turning both motors on and off as necessary. So I figured somehow the wash motor impella was not turning and pumping water, despite the fact that the motor was indeed running correctly. So I removed all the plastic housings, the screwed on impella, and the metal chopper at the base of dishwasher. Then I was able to easily pry the old plastic chopper sleeve right off of the electric motor shaft (normally it is screwed on and cannot be pryed off). Since the plastic threads inside the chopper sleeve were completely stripped, the motor shaft would turn but the impella would slip on the shaft and not be driven. The replacement sleeve was much better constructed (metal not plastic). It could be easily screwed on to the motor's driveshaft after lifting the old rubber seal and gently holding the motor shaft with a pliers (carefull to avoid scratching the shaft). I removed the old rubber seal nd replaced it with the new one from the kit, right over the newly installed metal chopper sleeve. Next, I easily centered the metal chopper sleeve and pressed in the new seal after reinstalling the plastic/metal chopper screen, using the temporary jig included in the kit. Then the jig was discarded and the impella simply screwed onto the chopper sleeve (using the appropriately threaded hold-down screw provided in the kit). Finally, the rest of the plastic hardware is screwed in place. Waahhlaa...now impella is motor driven again and blows water hard into the dishwasher during the wash and rinse cycles. Total cost of job to do-it-yourself, $29.50 including shipping (which only took three working days). Estimated job if down by appliance repairman, $140 (assuming the repairman didn't first erroneously blame the problem on faulty electronics then charge you hundreds of $$'s to replace circuits which were not broken to begin with, only to find the dishwasher still not washing/rinsing after his expensive electronic circuit replacements. The actually mechanical fix was cheap and simple. Truthfully, there is no excuse for Jenn Aire to ever use a plastic Chopper Sleeve in their dishwashers to begin with.......carefully planned obsolesence if you ask me. Oh well, it works perfect now. I doubt if even the four marbles my 4 year old had tried earlier to wash in my dishwasher (stripping out the original chopper sleeve) would do any damage to the metal replacement. However, I don't plan on testing my hunch. A simple fix, but a slightly challenging diagnosis which relied on a keen sense of hearing and a quiet workplace. Seems many people in these blogs have had the very same problem with their Jenn Air/Maytag dishwashers, and have made the same diagnosis and the same simple fix. Thank you mucho, PartSelect.
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