Piston and Nut Assembly

First I opened the dishwasher and removed the lower basket. Next I removed the 4 screws that hold the food filter plate in place at the back of the tub. Then I unscrewed the Piston/Check Valve assembly counterclockwise, located at the back center of the tub, by hand. I replaced the old part with the new one and reinstalled the filter plate. I ran a rinse cycle to verify that that all of the water was purged. Finally, I reinstalled the lower basket and resumed using my dishwasher.

First let me say, it's so easy even a caveman can do it. I removed the water out of the bottom. Then I removed the cover in the very back of the machine with a wrench. As soon as I did that, I could see the piston. Next, I twisted the white piston out with my fingers (this was the hardest part). I could see the piston had partially disintigrated. I ordered a new one, had it delivered in a few days, and put it all back in reverse. It took minutes. Thanks to the guy that posted his story, I was able to fix mine for $18.

remove the screen at the back bottom of dishwaser. (4 screws). Unthread piston and and nut assembly for check valve....thread in new one.
Problem solved....no more water $10 part....no repair person !!!

I removed the 4 screws that hold the mesh drain cover in place . I used pliers to loosen the check valve piston and nut assembly at the rear of the appliance . I screwed in the new piece by hand . While I had the dish racks out , I put a new set of wheels and rollers on them .
I was 5 minutes away from buying a new dishwasher , but this website saved me HUNDREDS of dollars .
My dishwasher is as good as new now .

Looked up Model number on site, checked "symptoms", and 64% of the time it was the Piston & Nut Assembly, which was correct. While I had it apart, I replaced Filter Gasket that was deteriorating, and lower spary arm that had a crack. Very easy fix.

I could not have accomplished this repair without this site. It lead me not only to the problem but what parts would be needed. Since the pump worked okay I decided the water must be draining back from the hose since the bottom of the washer was lower than the discharge point of the drain hose. I thought there must be a check valve someplace. When I found PartSelect it was easy to go to the brand of dishwasher, model number, symptom and lots of advice from people with the same repair in the past. I decided to go with the piston and nut assemble (check valve) and the valve flapper. On the web site there was a blowup diagram that showed where the part was and advice on how to properly install the parts. When I looked at the old check valve and the new one you could easily see that was the problem. Replacing the flapper was added insurance.

remove bottom tray and rear cover from inside washer.then remove PISTON NUT ASSEMBLY CHECH VALVE by turning it to the left. replaced with new valve assemmbly. IT IS workng like NEW.TOOK ME 30 minutes.VERY EASY!!!!!!!!!!thankyou allfor the help.

Just remove the 4 screws at the lower rear inside the washer to remove screen holder...then unscrew the Piston and Nut Assembly by hand. Put in the new unit, reattach the screen holder with the 4 screws...and the job is done. Probably takes less than 5 minutes....very easy.

Your site is great! Saved me a service call for a repairman to come out and tell me what was wrong, order parts and then come back. Total repair was less than $90 including parts and shipping. It arrived in two days from when I ordered it. I ordered the replacement door gasket, the gasket insert and a new checkvalve. This was a super easy fix and I am a girl too boot! I am proud of myself!

I used a phillips screwdriver to take off about 8 screws off the white inner door fascia in order to replace the door seal. Keep this panel upright and do not lay it down since the rinse agent will leak out all over! Found out that the hard way.

Removed the old, dried out, outer door gasket, centered the notch that was on the new gasket at the top of the door and installed it all the way around in the door gasket groove. Installed the gasket insert at the bottom where the door gasket comes together on the bottom of the door.

After that was completed I used a 1/4" nutdriver to remove the 4 hex screws at the back of the dishwasher for the cover that is over the check valve. It is white and has a very fine mesh screen.. so easy to identify.

The old check valve was filled with crud and and the rubber was deteriorated. I just backed the old one out counterclockwise and put in the new one, a little better than finger tight. Replaced the cover and the hex screws with the 1/4" nutdriver.

Reinstalled the white inner door panel, insure the door handle comes through the hole in the front prior to attaching your screws back in place. Closed the dishwasher. Ran it on rinse/hold cycle to make sure no leaks before going for a full wash. Works great and drains now too.

Your site is a lifesaver! Thanks!!!

ordered and received parts. unplugged electricity and drain and water supply turned dishwaser upside down for ease of access. removed clamps usin 1/4 and 5/16 nut drivers and phillips head screw driver to undo bracket clamps old parts and replaced and as per directions using two pair of adjustable pliers one to hold motor shaft and other pair to remove cutting blade. replaced impeller and blade ttaking care to keep track of screws nuts and bolts and older parts to make sure of assembly. turning dishwasher upside down makes for easy parts instalment. PAY CLOSE ATTENTION TO DISASEMBLY AND PUT TOGETHER IN REVERSE ORDER GOOD LUCK parts ordered to replace solonoid kit as it feels hot and still have burning bakelite odor.

Replaced the Piston and Nut Assembly, located inside the dishwasher under the screen at the back, by unscrewing the old one and replacing with the new - Works great now!!

follow instructions found here, with a little help from part diagram. Initially removed the sump cover but then removed the cover at the back of tub. This uncovered the Piston assembly and the replacement was a snap. Dishwasher now works well and actually cleans the dishes. Also did I mention my parts arrived the day after I ordered even though I used standard delivery. This site rocks.

Once I found out where the pison was it was easy. I removed the far back screen that runs across the entire back of the inside of the dishwasher. There was four screws to remove this screen. This exposed the Piston assemply which is threaded, so you just twist it off like a big nut. It was easy to tell that the rubber on the piston was not sealing and needed to be replaced.

Partselect was the only one that had the correct solution. The Piston and Nut assembly fix the problem. The washer on top of the piston was worn and it would not fully close. Replace the piston and nut assembly within 15 minutes after I found it.Shipping was supposed to be within 3 days. The part came the next business day during the thanksgiving holiday. WOW

Remove the screen that runs along the back of the dishwasher.In the middle of the area that was covered with the screen you will see a white plastic valve with 2 little ears sticking up. Use the nose of a pair of pliers to twist counter/clockwise on the valve and it will come right out. Inspect the valve.If the rubber cone shaped valve inside the valve can be pushed through the top of the valve ,the valve is bad.Replace it and go wash your dishes.