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Whirlpool Dishwasher Model GU940SCGB3 Door Leak

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JimKaran:
Hi AJ,

I have a Model GU940SCGB3 Whirlpool Dishwasher that starts to leak water from the bottom right corner of the washer as soon as it is done filling and a sound like a motor comes on. When the splashing starts the water just runs out from this corner. The problem just started abruptly one day and never was a slow leak. The water just strams or gushes out. The door gasket's top surface is smooth with a raised outer lip which is also smooth. There is an "AJ" Gallery picture on your website of the interior of a machine that is similar to mine. There is no lever on this machine to, let's say, close the door more tightly after it latches. The leak occurs even after checking that the door latch "catches".

After taking off the toe panel and finding it dry, I am sure the leak is coming from the area of the door. Since the water is coming out the right side I don't suppose the door vent felt seal is the problem. I'm not sure how the rinse aid dispenser on the right side of the door works or whether it could be related to the problem. I cleaned off both "tank deflectors" and switched their positions and that did not help things at all. I suspect the problem must be the door gasket and maybe also the tank deflectors. What are your thoughts?

If you think the door gasket needs replacing, could you please tell me how to cleanly remove the original and how to install the replacement?

Thanks!


AJ:
Hi JimKaran,

I would look around the pump cover under the lower spray arm.

A lot of times I find the screws that hold the pump cover down have come loose and then the cover lifts up enough that the cover seal (#13 in the a attachment) will blow out from the water pressure.

Without the cover seal in place some water will get shot towards the bottom of the door.

If the seal is not in to bad of shape you can take the cover off and put the gasket back in place.

Here is a new seal for that model dishwasher.

WHIRLPOOL Pump Cover Seal, part number: AP2904413







JimKaran:
Amazing! I took out the bottom shelf, unscrewed the lower sprayer blade and removed the blade, and tightened the screws each about a half turn all the way around the pump cover. Then I tested the dishwasher, and voila! No leaks in sight! Thanks!

While examining the plate that has to be screwed down I noticed that part #9 on the schematic you referenced seems to be some sort of filter with a fine mesh screen. In two places the edge of the screen has lifted up a bit. I have two further questions:
1) What is the function of the screen and what consequences might ensue if it is not replaced?
2) If this screen were to be replaced, would the pump cover seal also need replacing?
3) If a new pump cover seal were installed, would the use of a sealant be called for?

AJ:

--- Quote ---Amazing! I took out the bottom shelf, unscrewed the lower sprayer blade and removed the blade, and tightened the screws each about a half turn all the way around the pump cover. Then I tested the dishwasher, and voila! No leaks in sight! Thanks!

--- End quote ---

That's great! Glad to hear you got it fixed.


--- Quote ---1) What is the function of the screen and what consequences might ensue if it is not replaced?

--- End quote ---

The screen stops food and stuff from being pumped around the dishwasher when it's cleaning. When the water is pumped out the stuff in the screen gets pumped out to. The dishwasher will clean better with it replaced.


--- Quote ---2) If this screen were to be replaced, would the pump cover seal also need replacing?
--- End quote ---

I never like to use old seals over again if I can help it. If you are going to replace the screen it would be a good time to replace the seal too.



--- Quote ---3) If a new pump cover seal were installed, would the use of a sealant be called for?
--- End quote ---

No, nothing needed. It just goes in a grove and the pump cover goes over the top of it. It gets sandwiched in place.


Here is the Filter/Screen for your dishwasher.







JimKaran:
Thank you for the answers to my last questions!

Bad news: I just ran the dishwasher and the leak is back! Previously I had only checked the operation on first fill and pump start. Questions:
1) Would a thread sealer on the screws help? The screws seem fairly tight, though. Perhaps the pump seal is "scrunched" a bit.
2) Should the screws be torqued to a certain setting?
3) Could the problem be the tear in the front of the filter? Isn't the water traveling down through the filter? I don't see how that could be the problem.

Your thoughts?

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