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Dishwasher makes rubbing or grinding noise

Sears Kenmore (Whirlpool) dishwasher model 665.13843k601 has suddenly started making a rubbing noise (sounds like something rubbing against a rotating part). It makes the noise during all parts of the washing cycle but not when filling and not when just pumping water out to the drain.

I have not been able to remove the lower spray arm by turning the plastic knob at its center (it just turns and turns in both directions, releasing anything, even if I hold the spray arm).

Any ideas before I call for service?

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Dishwashers , Kenmore , Whirlpool , Appliances
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13 Answers from these members:
Joseph Perez
I know how quickly dirty dishes can gather and its best to have a good working dishwasher in the home. While you are waiting for an expert answer, I did manage to find a great link that will provide you with some tips in fixing your problem. I hope my link is useful.
by Joseph Perez Earned 62,642 community points in Kenmore
January 8th, 2011
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Manage My Life
Thanks -- that did get me into the chopper blade area and I removed and cleaned it. It only had minor bits in it and unfortunately, the noise hasn't changed.

I am guessing now that it must be in the pump itself.

What's next? I am guessing that next is to remove the dishwasher and access the pump from underneath to find what parts are either bad or have foreign material. Any suggestions or diagrams?
by Manage My Life
January 8th, 2011
Answered in 2 hours
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Fred M
The circulation pump seems to be where the noise is coming from. This unit has a separate drain pump.

The image below contains a water flow path and instructions on how to get into the sump to check the impeller and chopper screen.

The 2nd and 3rd image will show how to remove the circulation motor and impeller. Read both before starting any repair.

I hope this helps. You can reply with any additional details or questions for further assistance.
by Fred M Earned 109,690 community points in Kenmore
January 10th, 2011
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Manage My Life
Thank you Fred. That got me all the way inside and I was able to remove the wash motor. Holy moley, what a journey! I don't know how anyone could dismantle this without instructions! Even with instructions, it took me a couple of hours and a lot of lifting and crawling.

Fred M -- a couple of bits were missing in what you sent: On p 22, it refers to fig 3-30, on p 23 which I don't have; and for step 4 of "Removing the Pump Assembly" on p 22, it says to see procedure on p 18 which I also don't have.

Is the full service manual available somewhere?

There were no foreign objects. What I did find was a badly corroded motor shaft. The bushing the pump impeller and the motor has been leaking -- probably for a long time. I will have to replace the motor -- or the dishwasher. Not happy to get 3-1/2 years out of a dishwasher before it needs a $300 repair (if done by the service person).
by Manage My Life
January 11th, 2011
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Manage My Life
I like to know: Given the damage I have (corroded motor shaft as shown in picture), what do I need to replace? The motor, I suppose but other parts of the pump, since it was the leakage of the seal that led to the corrosion.

On the digram at tinyurl.com/4l7r8xt , I have to replace 18 ($173) and 21, I assume. What else?

If I replace 20, does that include 21? Looks like it does but not sure how to read the "dotted lines."
by Manage My Life
January 15th, 2011
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Fred M
The part key 9 is part number W10239404 and comes assemble with the impellers. If you order 20 you do get part key21. I think the best option is part key 9.
by Fred M Earned 109,690 community points in Kenmore
January 18th, 2011
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Manage My Life
Thank you, Fred. The part is now on order. I appreciate your advice: I would not have known that the part 9, which includes all the parts, costs less than part 18 which is just the motor.

Still not very happy to pay for repair of something that was clearly a manufacturing defect (leaking seal rusted the motor after just three years); but at least your service and knowledge were good.
by Manage My Life
January 23rd, 2011
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Manage My Life
A final entry on this.

The part came and I installed it today. It took a couple of hours. It works fine now. I hope it lasts longer than the first one!
by Manage My Life
January 30th, 2011
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Manage My Life
Can someone let me know if Sears is providing an extended warranty since this problem is due to a manufacturing defect?

Thank you.
by Manage My Life
April 11th, 2011
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Fred M
While I agree a dishwasher should last longer than 3 1/2 years there is no warranty extension for this problem. The good news is that if you can change the motor then you can fix anything on this dishwasher with a little help from us.
by Fred M Earned 109,690 community points in Kenmore
April 11th, 2011
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Manage My Life
Is the warranty 2 years or 5 on my Kenmore Elite? Someone on a chat board had said that Whirlpool would cover the motor for 5 years. Does this apply to my made-by-Whirlpool dishwasher?

I am not too thrilled with this dishwasher since the upper and lower racks have started rusting on many of the ends. It is nice and quite but at this rate it will be replaced soon.

Thank you.
by Manage My Life
April 11th, 2011
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Fred M
Per the owner's manual for the 665.13843k601 model there is a 1 year warranty. I found no extended warranty on the motor. I'm sorry I didn't find anything.
by Fred M Earned 109,690 community points in Kenmore
April 13th, 2011
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Manage My Life
Well I pulled the dishwasher out and removed the motor and impeller. I have ordered the replacement part for $88 and just waiting for it to arrive. The motor was nearly seized.

A few things I noticed with the dishwasher out were:

1) the black sound deadening on one half of the bottom of the tub had fallen off and was now brittle.

2) the wood cabinet on one side of the dishwasher had water stains on it which means the hoses are leaking that take water to the top sprayer.

3.5 years old and all this has happened including the door that wouldn't stay shut and the racks that are rusting out on all the ends.

Very, very poor workmanship and quality for $800.

Sears and Whirlpool have lost me as a customer.
by Manage My Life
April 13th, 2011
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