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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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Questions & Answers

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

1 Answer

Mike, Based on the information this issue sounds like it would be caused by a motor that is not operating on the high speed winding. This would require that the motor to be replaced. You can test for an open winding by checking from pin 4 blue wire to pin 7 gray wire on the motor. If this checks ok then the timer would be the issue.

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Waynef for Model Number Kenmore Residential Washer model #11028522700

I do believe my washing machine is haunted! It will run and do 6 loads of laundry without a hiccup for many days! Then it gets in a mood and stops during a wash cycle and just sits for a couple of hours then starts again. My guess was timer, lid switch or other control knobs! All were tested, nothing found! Next I figured a bad bearing was heating up and going into safety mode! BUT! That doesn't explain why it will work for weeks on end and act up for a couple of days! I have tried different settings,cycles, loads water temperature, everything I can think of! When its running well, it's perfect! When it's acting up! I think of getting a new machine! I've checked for loose connections, ground wires, and I have inspected all parts. Once about 12 months ago the circuit breaker did trip and this has been going one for 4 months. I am at a loss!

1 Answer

Wayne, It sounds like an issue where the motor at times is getting a drag on it where it caused it to overheat. With it stopping in the middle of wash or spin then that would be the most likely scenario.

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Debra for Model Number 8577356

I talked to a gentleman yesterday telling him my washer won't stop filling water. It will not shut off. He told me to turn water on let it fill for a minute or two then unplug while it is still filling. If the water keeps filling it needs a valve. If it stops it needs a timer. It did stop when I unpluged it so I ready to order a timer #8577356. Just making sure I did things right before I order. Now if this does not work, can I return the timer? Thanks, Debra

1 Answer

Hello Debra. No, you need to order the pressure switch not the timer for the unit.

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1 Answer

Hello Lovell, This sounds like the water level switch W10339251 is not making electrical continuity when it is actuated by a low water level. You will need to get a test meter to check it electrically. You also need to remove the water level switch hose from the switch and blow through t back toward the tub. It should be clear and you will be able to hear the air entering the bottom of the tub. Don not blow back toward the switch as this can cause damage to the switch.

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1 Answer

Bill, This does sound like it would be a faulty timer WP8577356. To remove the knob you will either need to grab the post in the center of the timer on the back and lift up or hold it and pull timer knob off.

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1 Answer

Hi. If the motor does not stay running then it has either bad bearings, dragging armature, shorted windings or centrifugal switch contacts. Therefore it will also open the heat circuit passing through separate centrifugal contacts as well. Either way the motor part # WE17X10010 needs replaced. Correct all vent issues with kinking or clogs. Thank You.

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1 Answer

Steve, Based on your short post description, Yes, you will need to replace the timer WP8577356. Apparently the timer motor or the interior contacts have failed and the timer will not advance on it's own. Thanks

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Jim And Sheila for Model Number 110.27612600

Hello, Our washer will run through the cycles but will not spin. A while back my son put it on the longest wash cycle and it just kept washing. It would be fine if we put it on a shorter cycle and did so for some time intil 2 weeks ago, stopped spinning. Also, the dial used to only turn clockwise and now turns both ways. Do you think it is the timer or something else. I need to fix it ASAP but I want to make sure that I order the correct part from you. Thank you very much for your time!

1 Answer

Jim and Sheilla, based on your post, you need a timer WP8577356, no matter what. Chances are (95%) that will solve all the issues, as long as nothing else was damaged by the faulty timer. Thanks

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