Is the check valve, 675238, the component that keeps outgoing (dirty) water from coming back into the tub? I have seen other units which use something called "piston and nut" for this function ... but do not see such an item listed for the Whirlpool machine.
Answer Jim, Yes, the 675238 / 675238 Check Valve assembly is designed to keep drain water from entering the dishwasher tub, in the event of a drain problem. The "piston and nut" is used by a different manufacturer and serves the same purpose. All manufacturers now have some type of "check valve" on the drain system of dishwashers.
Why is my door still leaking at the bottom after I have replaced it with a new door gasket?
Answer Hello W.P.,
You need to check the spray arms for separations and/or clogged holes. These things will put a "wave" in the water and cause it to slosh out over the front of the tub. Also check the feed tube in the rear where the upper rack couples with the feed tube for the center spray arm.
We have an 11 year old dishwasher that wont drain. I have pulled the check valve and cleaned it, but the washer still fills with water. Reading help sites it seems like there might be something missing on my valve. Is there anything inside besides a rubber flap? Other than that, when running, it seems like there isn't enough pressure to evacuate the water, the drain line has water and air sloshing back and forth. The line is clear. The motor is running and spraying, but does seem to hum oddly. Any suggestions?
Answer Tony, Check and make sure the drain system and disposal are not clogged or restricted. The "flapper' is the only thing inside the check valve assembly. It should flip open when the dishwasher drains and remain closed when washing or off. You may want to disconnect the drain hose from the plumbing under the sink, fill the dishwasher, then drain it, to see if the water evacuates properly(less than 60 seconds). You most likely have a damaged drain impeller 675806 or something in the pump housing, and will need to dismantle the pump and check.