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Customer Questions and Answers for Spray Arm Retainer by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18041517
Manufacturer Part Number: WP9742945

The Spray Arm Retainer is an OEM part for Whirlpool dishwashers. This component is crucial for securing the spray arm in place, ensuring it rotates correctly to distribute water evenly throughout the dishwasher during cleaning cycles. 

Common causes of a bad retainer include regular wear and tear, breakage from excessive force, or exposure to high temperatures and harsh detergents. A faulty retainer can lead to the spray arm becoming loose or dislodged, compromising the dishwasher's cleaning efficiency.

Symptoms of a bad spray arm retainer include:

  • The spray arm not staying in place
  • Poor cleaning results with food particles left on dishes
  • Noisy operation due to the spray arm hitting the dishwasher walls
  • Water not reaching all areas inside the dishwasher

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and some Kenmore models.

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Questions & Answers

For Whirlpool Spray Arm Retainer (Part Number: OEM18041517)

Cindy for Model Number kudi24se

I've got much the same question as Sarah S. did, plus a second one about draining (actually our original problem). The gasket below the arm retainer on my dishwasher is paper thin and flexible. The part you're recommending looks way too thick, and based on yet another person's comment about that nylon bearing, I believe it will prevent the arm from moving if installed. Suggestions re: gasket below the retainer nut? (I don't know whether it was previously fixed in place on the underside of the nut or below it because someone else took the dw apart. Next time we photo document as we go.) And our first problem was actually that the dw hadn't fully drained. Having taken apart the lower wash arm assembly and looked at food screens and drains, we ran it again, and there's still a little water in the bottom, but not much. Apparently, some water is necessary to keep pump seal moist? We didn't get deep enough in to look at the check valve, but if we have further drainage problems, that will be the next thing we examine. Thank you so much, Cindy

1 Answer

Cindy, The spray arm bearing will sit down inside the spray arm and will work for your unit. For the draining you will want to check the check ball to make sure that it is moving freely.

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1 Answer

Sarah, The Radial bearing ring WP9742946 serves two purposes, it acts as a seal, to keep the water in the spray arm and produce a higher rate of force on the water to clean the dishes, and it acts as a "smooth" surface for the sprat arm to turn or rotate on. If it's distorted, it needs to be repalced as well. Thanks

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1 Answer

Hello Annette. You will need to try to use needle nose pliers to hold the nut to unscrew it. You can also try cutting a slot in the top of the nut and using a flat blade screwdriver to unscrew it. Hope this helps.

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1 Answer

Hello Annette. You will hold the spray arm and turn the nut with the wing on top to remove it. Hope this helps.

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