Sump Pump Check Valve

Had to take apart dishwasher and replace chopper assembly. The dishwasher had a lot of debris in in including pieces of broken plastic forks. Now works great

Pulled out dishwasher after checking the air gap, etc. Washer would marginally pump out water and could hear motor running on drain cycle. Usual mess from water draining out of hoses.

Ohmed drain motor at 24ohms, should be 16.3 ohms from repair manual. Noted check valve, a rubber flapper, was canted out from sealing surface.

New motor ohms at 24 ohms, installed new motor prophylactilly. Installed new flapper valve through the sump. Washer checked okay for drain cycle.

Feed tube assembly was ordered as upper rack flapper valve was worn into open on upper position due to normal use. Feed tube spinner was small, so the rubber flapper was scavenged from the new assembly and used on the old feed tube assembly.

Took racks out, loosen screw on top and back then twist feed tube to right and whole assembly can be removed. Now you should be able to see some torx screws; remove those and then remove the piece they were holding down, from there you'll see another screw, remove it and the piece and so on until there are no more screws. Now there is the food chopper cover that needs to be removed; mine was stuck there. You should notice some ribs underneath that allow the water to be sucked in while keeping really big pieces out; I got a pair of channel-locks, opened them all the way and was able to slip one of the pieces under the cover and pull straight up, once off you will see the chopper covvered in food. I cleaned mine off and it looked good, but when I put it back and stuck my finger down teh discharge tube and turned the pump, the chpper did not turn. when I put the new one in and did the same test it did turn. If the chopper is still fits in the slot, it can be cleaned and put back and work for several washes while the part is shipped. I went ahead and changed the check valve since I had it opened which is just to the right of the chopper(all you can see is a little slit and some black rubber). Use some needle nose and pull it out. I would not do this unless you plan on changing it, I pulled mine out to look at it and when I put it back so I could order the parts the dishwasher never drained properly. When you compare a new one with an old one you will see what I mean, you can drop a new one right in but the old one you will have to force in (gets water logged over time and expands). This job is very easy and a lot cheaper than a new DW...and your wife will be impressed, so do not be intimidated.

Took the two baskets out and removed the spinners which simply clip on. The bottom center spinner screws on/off using a tab in the center. Then removed four screws holding the filter cover in place. Then removed the one screw holding on the chopper cover and removed cover. Old chopper came out easily. Then rinsed and washed everything down to clean out all of the disgusting stuff that was clogging the unit. Put the new chopper in place, put chopper cover on and everything else in place and it now cleans like it was brand new!

This site is wonderful..., thank you. Especially thanks to Nanette's detailed experience. The thing that gave me the most problem (and apparently Nanette, as well) was removing the lower round cover of the chopper assembly. Finally, some one on the internet identified the trick...put needle nose pliers in the screw-hole and pull-away. It came right out. Wish I could acknowledge the source but now can't find it.
Actually, the check valve was good, but I replaced it anyway. It was 10 times the trouble to replace than the drain pump. Wish I had started with the drain pump. By removing the drain hose, I stuck my finger in the hole and discovered the problem: the impeller was off of the pump and lying in the bottom of the drain. It was a simple thing to replace the pump. Press down on the locking mechanism and turn it to the left. When it was off, I could see that the check valve was in place and not a problem. (Of course by that time, I had already replaced it.) Good luck.

FIRST I TURNED OFF THE POWER GOING TO THE MACHINE!!!! Then I removed the top rack by removing the (2) end caps on the front of the rack glides first then lifting the rack upwards and out. Next I removed the bottom rack which slid out easily. I then removed the lower spray arm that was held in place by the plastic turn-screw portion of the lower spray arm support/hub. I turned the screw a few times and the spray arm was released. I then released the feed tube assembly that was held in place by (2) clips; one clip was on the back panel of the tub (above the probe area) and the other clip was on the top panel of the tub (before the upper arm spray). Then I turned the entire tube feed assembly a quarter turn to the right so that it was possible to separate/unsnap it from the feed cap on the bottom. After the feed tube was moved away I was able to access all (4) screws that holds the accumulator in place. I used an allen wrench to remove those. After the accumulator was removed I saw two screws that was holding the 2-part protective cover of the chopper assembly. The small cover came out easily, the round cover took a little jiggling and fussing until I figured out how to pop it out. The chopper was revealed when the cover came off and I found it to be very warn and a bit bent. I pulled it out by pulling it upwards and forward towards me. At this time I also removed the valve check. To my surprise it didn't look like the one that I bougth to replace it. It was missing the round disk portion. I fished around thinking it may have somehow fallen off, but I didn't find anything. I put the new one in, disk-side down. I then put the chopper assembly in place and put everything back together again. I'm not 100% sure that it is completely back to normal. It seems to leave significantly less debris than before, but I noticed that there is more water on the bottom of the basin now. So it may not have been my only problem. If anyone has experienced the same thing I would really like to know

Pulled everything out the front, and dug down to find a thrashed chopper assembly (like a little garbage disposal). The previous owner just tossed anything in; pop tops, plastic cutlery, etc.
Didn't pay attention to the exact installation of the chopper as I pulled it out, but, it turns out that it only goes in one way.
Used pictures and instructions I found online as a guide and didn't have any issues.
Replaced the check valve because it isn't expensive and I was in the neighborhood.

it was really easy i removed the lower spray arm then
i removed the four hex head screws that hold on the
fine mesh screen then i pulled out the plastic insert
which exposed the cover to the chopper assembly
removed a smallhex head screw pulled off thecover
and there was the chopper and checkvalve replaced
both with a new one and the dishwasher works like
new thanks a lot im sure a service call would have cost over a hundred dollars

Discovered through internet that it may be a bad chek-valve, Opened washer up and removed inside covers. Actually found that the chopper assembly was bent and non-functional. Ordered new assembly plus ordered a new check valve since the other was 8 years old. replaced both at the same time. Dushwasher works like new once again.

R Draper