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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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Questions & Answers

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

John for Model Number Whirlpool top load direct driver washer

The washer was not draining in the rinse cycle. Agitates but clicks an buzzes in the drain cuylce. does not progress. - I checked for any clogs in the drain lines and house pluming in or house lines. - I bypassed the lid switch to make sure it is working - drained the tub and all lines - removed the washer cover. removed the pump cover, no obstructions in the pump. - replaced pump, Main motor Drive shaft spins and pump spins. - reconnected the control panel. The unit will agitates and NOW will spin, presumable b/c no water in the tub. Is the timer BAD? I do not think it is the pump because no electrical parts on the pump. old model washer approx 2006

Linda for Model Number LSR8433KQ0

A very small clip is broken off the black pin that goes thru the timer to hold the knob in place. Is this black pin simply a device to hold the knob fast? Or is this why the machine won't advance to agitation? All other cycles seem to advance fine, it's just the agitation on both wash & rinse. I can jiggle the knob and get it started but if I don't get to it within several minutes I smell "hot". Hot wires?Hot motor? Don't really know. Do I need a timer or a new washer? Thanks.

1 Answer

Linda, the black pin is used to lock the knob onto the timer shaft. the burning smell that is occurring could be from the timer contacts not closing properly when it is supposed to be agitating. It would be recommended that the origin of the odor is isolated to if it is in the console ( indicating the timer WP3948852 ) or if it is from near the motor.

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1 Answer

LLA, The timer would most likely no be the issue with the unit. You will want to check the pressure hose to make sure that it is not clogged or damaged. If this checks ok then the issue would most likely be in the pressure switch. The part number for the pressure switch is W10335056.

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1 Answer

Andrew, Unfortunately the pin that goes through the timer to hold the knob in place has to be gotten with the timer as it is not available separately.

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1 Answer

Carl, The clicking humming and no advance would be a faulty timer WP3948852. The no spin or drain, is most likely an issue in the timer, but you should also check the lid switch 3949247V as well. If the switch doesn't have a closed circuit when the lid is down / closed, the washer motor can't reverse and drain or spin the tub.

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1 Answer

Jesse, You will want to check the clutch as the clutch would be the most likely cause of the unit not spinning.

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1 Answer

Hello Dro53. Based on the information you provided, it sounds like the lid switch 3949247V is bad and will need to be replaced on the unit.

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