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Customer Questions and Answers for Timer (Fm-3) by Whirlpool

4.89 (64)
By: Whirlpool
Part Number: OEM18040668
Manufacturer Part Number: WP8578906

This mechanical cycle timer controls the sequence and duration of operations in your appliance. Replacing a worn timer restores proper cycle advancement so the machine starts, progresses, and shuts off at the correct times.

  • Advances the cycle by opening/closing internal contacts at set intervals
  • Coordinates stages such as start, run, and end-of-cycle depending on model
  • Common failure signs: won't advance through the cycle, stops mid-cycle, runs too long/short, or won't start/stop
  • Helps correct intermittent or inconsistent cycle timing
What's included: Timer Install notes:
  • Disconnect power before service; allow any moving parts to stop completely
  • Access timer from the control console; note wire positions before removal
  • Transfer any mounting clips/brackets from the old unit if present; align shaft with knob
  • After reassembly, run a test cycle to ensure proper advancement

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Questions & Answers

For Whirlpool Timer (Fm-3) (Part Number: OEM18040668)

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Rick for Model Number MED5640TQO

I have the Maytag Performa Series. My daughter finished drying clothes and then went to do another load and nothing. I checked all the thermal fuses, checked continuity on all the switches with the exception of the timer. If I turn the timer, the on/off switch clicks but nothing. Turning the timer a few times and hitting the switch the dryer started working again but when the door was opened to the dryer it died again. Now nothing. Can't duplicate that one occurrence where it started again. The switch on the dryer door turn the inside light on and off, I didn't check the continuity but assume since the light is turning on and off it's ok. No motor smell. Cleaned all the contacts but I see no corrosion anywhere. I don't mind buying the timer if that is what it is, or can someone recommend anything else? Thanks

Answer

Rick, You will want to check the start winding on the motor to make sure that it is good. Also check the continuity of the door switch to make sure that it has continuity when closed. The switch could be bad and just pushing the contact enough to turn off lamp but not make contact to start. The winding in the motor should ohm out between 2.4 and 3.8. You would check start winding from black to blue, and check run winding from White to blue. If these check ok then it would sound like the contacts in the timer are sticking. You could also check your push to start switch to make sure that it is good. You should have continuity when pushed and none when released.

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Answered by AppliancePartsPros.com   |   Friday, April 26, 2013

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