Ge WD24X10018 Dishwasher Piston And Nut Drain Valve Assembly OEM Part

It is very simple to fix. All the blogs recommend replacement of this part but do not explain why. This is a normally open check valve that permits the water from inside the dishwasher to drain out, either once it gets too high or just general splash. When the machine drains the pump comes on and the check valve closes. If the check valve is damaged or worn (like mine was) some of the water can pump back into the machine. So really, the problem is not that the machine will not drain but rather when it wants to drain, water is pumped back in. In the end this is an easy fix.

Removed screen that covered the lower back section (great video on APP site). Unscrewed and cleaned the piston, but noticed the rubber part was in poor condition. Found part here, arrived quick, and replaced in less than 10 minutes.

The gasket in the pump assembly was completing worn away, allowing water to flow back into the tub of the dishwasher. My wife was about to pay $60 for a repairman to come diagnos and fix the problem. An Internet search and some tinkering worth the dishwasher (GE Nautilus) revealed the problem and it was a quick and CHEAP fix!

Removed and cleaned plastic filter strainers (located in the bottom rear of the dish compartment) that was packed with sediment. In doing so I found the filter gasket assembly badly deteriorating (rubber coming apart with the simplest of touch). While trying to remove the filter gasket, I broke the lower spray arm assembly due to the plastic being brittle. (Unit is over 10 years old!) Then, while ordering parts, I read that the Piston & Nut assembly is the typical cause of the condition I was experiencing. Since it was only $10, I figured why not. All 3 components were exceptionally easy to replace and dishwasher is back to normal operation.

The Piston and Nut assembly replaced Check Valve and Body and gasket replaced