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Customer Questions and Answers for Circulation Pump And Motor (Dishwasher) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18070062
Manufacturer Part Number: WPW10605058

This circulation pump and motor assembly drives water through the spray arms during the wash and rinse cycles. Replace it to restore proper wash performance when the dishwasher fills but doesn't spray, cleans poorly, or runs loudly. What it does:

  • Circulates water from the sump through the spray arms for cleaning and rinsing
  • Also called the wash motor; provides the pressure needed for effective spray
  • Typical failure symptoms: poor cleaning, no spray or weak spray, loud humming/grinding, or leaks at the pump area
  • Restores normal water circulation and wash pressure
What's included:
  • One circulation pump-and-motor assembly
Install notes:
  • Disconnect power and shut off water supply before servicing
  • Access from the bottom/front of the unit; expect residual water—protect floors and wiring
  • Move wiring and hoses carefully; transfer any clamps, seals, or brackets from the original as needed
  • Ensure seals are seated, reconnect hoses/wiring, then run a short cycle and check for leaks

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Questions & Answers

For Whirlpool Circulation Pump And Motor (Dishwasher) (Part Number: OEM18070062)

1 Answer

Hello Steve, You will need to verify voltage to the pump motor during the wash cycle. If voltage it present, the wash motor W11032770 is in question. If no voltage is present during wash, the control W10595569 is in question.

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1 Answer

Allan, You will want to check the circulation pump to make sure that the impeller is not getting jammed by some type of debris. If this checks ok then the motor would need to be replaced.

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Laura H. for Model Number WDF780SLYB0

Our initial problem started with our dishes not coming clean. After some investigation, we found that the spray arms were not rotating. We checked and found no cracks, breaks or clogs anywhere internally in the machine. Looking underneath, we found there was a leak around the motor/sump so we replaced both the motor and sump. After replacing, the machine would not drain. That was not a problem at all before replacing those. We thought that maybe the old drain pump went out after installing the new motor/sump, so we replaced it, as well. It is still not draining. We are at a loss at this point. We can't seem to find a check valve on this machine to see if there is a rubber flap or something that has come off or gotten stuck since we do know that that can be an issue oftentimes with draining. We also do not know if it is needed to reset the control panel after installing the new parts as we've heard happens sometimes and don't know how to do that on this machine. We would appreciate any help you are able to offer for something else we might check. Thank you!

1 Answer

Laura, If there is a check valve on the unit it will be in the drain hose. If the drain hose check valve is in place then that would not be the issue. You will want to get the unit to the drain cycle and check to see if the pump is getting power when it is in the drain cycle. If there is power then the issue will be with a clog or a drain pump received that may be bad. If there is no power then the issue will be a faulty wiring between the pump and control or a bad control board.

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