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Customer Questions and Answers for Timer (Mechanical Cycle Control) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18040557
Manufacturer Part Number: WP8577356

This mechanical cycle timer controls the sequence and duration of operations in the selected program. Replacing a worn timer restores reliable cycle selection and proper advancing from start to finish.

  • Controls cycle timing and advancement via internal cams and contacts
  • Directs power to components in the correct order for each cycle
  • Stops the appliance at the end of the cycle
  • Fixes: cycle won't advance or gets stuck, won't start, stops mid-cycle, dial doesn't move or skips
What's included: 1 timer assembly Install notes:
  • Disconnect power before servicing
  • Access the timer through the control console; remove knob/dial as needed
  • Transfer wires one at a time from the old timer to the new unit, matching terminals
  • Reuse existing mounting hardware and console parts; verify proper alignment before reassembly

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$133.26
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$168.62
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Questions & Answers

For Whirlpool Timer (Mechanical Cycle Control) (Part Number: OEM18040557)

1 Answer

Hello Styleplus. You will need to check and see if the lid switch WP8318084 is bad on the unit. If so, it will cause the issues you are having with the washer.

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1 Answer

Reno, First check or replace the water level switch and tube W10337781. This components controls the water level and tells the fill valve to open. If we have a bad circuit or an issue in the tube, the water won't enter the machine. On your machine, thats the more likely issue. Thanks and Good Luck

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1 Answer

Hi Jon. This type of timer has been revised from the origional one because the timer 120vac motor is fed from the white connector on the back of the timer. The connections were known to be loose. Check this first. If that dont repair (or need to ), then the timer is part # WP8577356. Thank you.

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