Piston and Nut Assembly

PartSelect Number PS260690

This is used for the check valve.

This part works with the following brands: GE, Hotpoint & Kenmore.

This part fixes the following symptoms:

  • Not draining.
  • Not cleaning dishes properly.
  • Leaking.
  • Compare At

    $12.84
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    $2.14
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    $10.70
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Installation Instructions Provided by PartSelect customers like you.

Average Repair Rating: 4.2 / 5.0, 63 reviews What's this?
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128 of 140 people found this instruction helpful

Parts Used

  • Piston and Nut Assembly

Level of DifficultyReally Easy

Time to do repair:Less than 15 mins

ToolsNutdriver

CustomerDan from Minnetonka, MN

Dishwasher wouldn't fully drain

I removed the four screws holding the screen and molded plastic cage inside the rear of the dishwasher to expose the check valve assembly. I then unscrewed the piston and nut assembly with my hand and replaced it with the new one. I found that the rubber cone shaped valve on the old piston and nut assembly was entirely disintegrated. This easy repair solved the problem.

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45 of 54 people found this instruction helpful

Parts Used

Level of DifficultyEasy

Time to do repair:Less than 15 mins

ToolsNutdriver, Screw drivers

CustomerDaniel from South Elgin, IL

Dishwasher would not drain completely,

Found a forum on the internet that said the Air Check Valve located under the screen on the bottom of the back wall inside the wash compartment may be the culprit. Took it out by using nut driver to remove screen, and twisting the part out. The seal was deteriorated. Repleacing the part was simply the opposite, and very easy.

I also replaced the screen on the floor of the wash compartment because the rubber was deteriorating there too. Here I had to remove the spray arm by carefully prying the locking tabs outwards and lifting the entire spray assembly upwards. Then, then plastic covers need to be unscrewed and removed. The new part had the plastic cage molded into it. So I discarded the old plastic cage. There are a couple of retaining clips that are a little tricky to get off the plastic posts. But, they can be removed by prying a standard screw driver underneath and working them off the post. Do not break the plastic post, and save the retaining rings. The new part does not come with any screws or retainers, so you will need to re-use them. Simply, place the new screen in position, slide on the retaining clips, and screw down the cage. The spray assembly is just slid back onto the shaft and snaps into place. A lot of writing, but was rather simple to do. 15-20 minutes.

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34 of 43 people found this instruction helpful

Parts Used

Level of DifficultyEasy

Time to do repair:15 - 30 mins

ToolsNutdriver, Socket set

CustomerKenneth from Lancaster, WI

3-4 inches water left in dishwasher after running

Removed 4 screws in washer then removed cover. Then piston and nut assembly which just needs turned loose.Pull out and then,put new one back in,tighten up, put cover back on put 4 screws back in. Then unhooked water line, power cord, drain hose. Pull washer out and drained water out of system with drain hose. put a towel down to catch excess water. Loosen nut at end of drain hose with a pliers, remove flapper put new one back in tighten drain hose . Put washer back in hook water, power and drain hose. Run thourgh cycle and it should work much better.

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35 of 50 people found this instruction helpful

Parts Used

Level of DifficultyA Bit Difficult

Time to do repair:30 - 60 mins

ToolsNutdriver, Screw drivers

CustomerAaron from Liberty Township, OH

Washing poorly, leaving particles of food on top of the dishes, not draining completely, ceiling spray arm not spinning (bent up to the ceiling)

The lower spray arm unscrews. From inside the dishwahser, put a screwdriver through the tab slots and unscrew the tower from the floor. It's pretty tight for plastic.
The upper spray arm has screws on the top of the dishwasher. You must slide the dishwasher out from underneath the countertop to get to the screws. Normally that's just the two screws above the door that screw into the countertop. Pull the insulation back and unscrew the arm from the top of the dishwasher. Reverse to reinstall.
Piston and nut assembly for check valve: Inside the dishwasher at the back there are 2 screws that hold a screen down. Remove the screen. Take out the check valve and replace it. It was still functional in mine, it looked like food gunk had built up on it and impeded the check valve action.
The flapper chec is a rubber flap in the drain tube that connects to your sink drain. You have to pull the dishwasher out from under the sink to get to the end of the drain tube that connects to the dishwasher. Take the hose clamp loose and remove the drain tube from the dishwasher. Then unscrew the plastic fitting that you just took the drain tube off of. The flapper chec is there. It had turned brittle and didn't flap anymore. It is a similar setup to the rubber seal at the end of your garden hose.

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16 of 18 people found this instruction helpful

Parts Used

  • Piston and Nut Assembly

Level of DifficultyReally Easy

Time to do repair:Less than 15 mins

ToolsNutdriver

CustomerKevin from Roanoke, VA

Nothing more than a worn out check valve,easilly accessible and easilly changed. The valve wouldnt close fully due to deteriation of the piston stopper.

Removed bottom tray from the dishwasher and in the back there is a screen with 5 hex head screws. Removed the screws and then lifted the screen out to expose the vavle. Unscrewed the valve by hand an installed the new one,hand tighten only. Reversed order for reassembly.

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