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Customer Questions and Answers for Wax Motor (Dishwasher Rinse Aid Dispenser) by Whirlpool

4.89 (64)
By: Whirlpool
Part Number: OEM18040821
Manufacturer Part Number: WP902899

This wax motor is the actuator for the dishwasher's rinse aid dispenser, releasing rinse agent at the correct time in the cycle. Replacing a weak or failed unit restores consistent rinse aid dispensing and helps minimize spotting.

  • Actuates the rinse aid dispenser by extending a plunger when energized
  • Works with the control to meter rinse aid during the final rinse
  • Failure symptoms can include rinse aid not dispensing, the level never dropping, and increased spotting/filming on dishes
  • Dispenser may remain closed with no audible actuation during the cycle
What's included: 1 wax motor actuator Installation notes:
  • Disconnect power at the breaker and shut off water before servicing
  • Remove the door panel to access the dispenser; label and disconnect wires
  • Release the old motor and install the new one in the same orientation, ensuring it seats fully
  • Run a test cycle to ensure the dispenser releases rinse aid

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Questions & Answers

For Whirlpool Wax Motor (Dishwasher Rinse Aid Dispenser) (Part Number: OEM18040821)

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Answer

Kathy, to replace the dispenser wax motor you will first need to separate the inner (plastic) door liner from the door frame, after you turn the power off at the breaker box, you'll need to remove all the screws, you can then unplug the wire harness from the wax motor, and carefully disconnect the wax motor plunger from the slide cam assembly. There are no tools required to remove it, the wax motor is a snap in fit, just use caution, you don't want to dislodge any of the linkage, lifters,etc. Thanks and Good Luck

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Answered by AppliancePartsPros.com   |   Tuesday, August 2, 2011

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