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Customer Questions and Answers for Timer (Washer, Mallory) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18026637
Manufacturer Part Number: WP3948852

This mechanical timer controls the wash-cycle sequence on top-load washers—coordinating fill, agitate, drain, and spin. Replacing a failed timer restores proper cycle advancement and reliable start/stop so each step runs at the correct time.

  • Controls the timing and order of fill, wash/agitate, drain, and spin functions
  • Switches power to the motor, pump, and water inlet valve at the proper moments
  • Common failure symptoms: cycle won't advance or stops mid-cycle; skips agitate or spin; runs past the end of the cycle
  • Knob doesn't advance or must be manually turned to proceed between steps
What's included: 1 mechanical timer assembly Install notes:
  • Disconnect power before servicing; turn off water if you'll be moving hoses
  • Access through the control console; photograph wiring and transfer connectors one at a time to matching terminals
  • Mount the timer securely and align the shaft with the knob/dial—do not force the shaft
  • Reassemble the console and run a test cycle to proper advancement

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$195.95
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$234.37
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Questions & Answers

For Whirlpool Timer (Washer, Mallory) (Part Number: OEM18026637)

Kimmy for Model Number LSR8433KQ

This washer is about 11 years old and the timer has made this rattling noise for about 8 years now. My machine will not go into the rinse and drain cycle and my service tech says it's probably the lid switch (per phone call). While that is a feasible repair my concern is that the timer will go out shortly after. My service tech says that since the timer has been doing the rattling noise for that long it is probably fine. I'm trying to decide whether to buy a new machine or not?

1 Answer

Hello Kimmy. If you can advance the timer and the unit will spin and rinse properly, then the timer WP3948852 will need to be replaced. If the unit is dead in the spin cycle, wont drain or spin, then the lid switch may be the only thing needing replaced. Hope this helps.

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1 Answer

Hi Michael. The timer part # WP3948852 120 vac to the water valve as you need it. The unit running and completing a cycle tells me that the lid switch is OK. You need to use a volt/ ohm meter part # MA-DM1 to see if you are getting full voltage from the timer , wires and connections to the water valve. Thank You.

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