Diagnosing Dishwasher Noise


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Old 03-19-20, 08:13 AM
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Diagnosing Dishwasher Noise

My dishwasher is making an unusual noise and is not cleaning the dishes properly.

Can anyone help me narrow down what part it could be based on this noise:

https://youtu.be/EJznAWN5whM
 
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Old 03-19-20, 08:37 AM
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Something (shard of glass, nutshell, fruit pit) caught in the grinder (if you have one). Look inside with the filter removed.

Something that got past the filter/grinder and is caught in the pump impeller.

If the dishes are not getting clean then the pump impeller may be broken or disconnected.

Is the water fully draining or is there a large amount left in the bottom of the DW?
 
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Old 03-19-20, 09:37 AM
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Actually, it is draining. And it seems like the noise is happening during the wash cycle, not the drain cycle.
 
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Old 03-19-20, 09:44 AM
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And it seems like, during the wash cycle, it's not spraying water.
 
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Old 03-19-20, 10:35 AM
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A make and model number may be useful here.
 
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Old 03-19-20, 10:52 AM
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It is Whirlpool WDT710PAYM6

Thanks
 
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Old 03-19-20, 11:11 AM
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Does sound like something in one of the pumps.

The following may help. The service info is the last section of it.
https://www.dropbox.com/s/2ngwlh135q...asher.pdf?dl=0
 
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Old 03-19-20, 12:40 PM
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Is a pump and motor assembly a likely fix:

https://www.searspartsdirect.com/pro...5/id-w10482480
 
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Old 03-20-20, 06:03 AM
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It may fix it but it is a guess.

 
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Old 03-20-20, 09:20 AM
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There are two pumps so if you hear the noise when in wash mode..... it's something in the high pressure wash pump. Yes.... replacing the sump assembly and wash pump will more than likely fix the problem.

That machine is easy to work on and the sump is easily removable for servicing. I'd try cleaning it first.

This video illustrates working on the sump assembly.
Dishwasher sump replacement
 
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Old 03-21-20, 02:04 PM
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I have the circulation pump off.

Any guidance how to "service" / clean it? Initially, I don't see anything blocking it.
 
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Old 03-21-20, 04:09 PM
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Take both pumps off and look for anything foreign in the sump.
Typically it's a piece of bone or glass.
 
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Old 03-21-20, 08:29 PM
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If it's making that noise during the wash cycle, would the obstruction be in the sump or the circulation pump? I don't see anything in the sump. And it's not clear to me where or how I would disassemble the circulation pump to clean it.
 
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Old 03-21-20, 09:38 PM
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When you pull the wash pump out you should see the actual pump impeller on the motor.
Anything foreign would be stuck on/under that impeller or sitting in the sump.

Does the impeller spin freely ?
 
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Old 03-22-20, 06:38 AM
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I don't see any obstruction.

Is it possible the pump could make that noise simply from having gone bad?
 
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Old 03-22-20, 10:18 AM
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I can't remember having to change a noisy pump motor but it is possible
for it's bearing to go bad and make noise like that.
 
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Old 03-22-20, 10:28 AM
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A loose impeller on pump shaft will sound like that. Only fix is a new pump.
 
 

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