Description
🧾 Description
Restore proper cycle sequencing in your dryer with the WP8578906 Timer Assembly, a genuine OEM part used in many Whirlpool and affiliated brand dryers. This timer controls the duration and sequence of the drying cycle (including heat, tumble and cool phases). Reliable Parts+2ShopJimmy+2
If your dryer is skipping stages, not starting, running too long, or not advancing through its cycle properly, this timer may be failing. Replacing it can help restore reliable functionality, better drying performance, and fewer service issues. ⚠️ Note: Always unplug the dryer or shut off the breaker before servicing. Confirm your model number to ensure compatibility.
⚙️ Features & Benefits
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✅ Authentic OEM quality — built to Whirlpool factory standards for correct fit, function and durability. Reliable Parts+1
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🔄 Restores complete cycle control — ensures your dryer completes all stages (heat → tumble → cool) as designed.
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💡 Fixes timing/control issues — ideal when your dryer won’t advance, won’t shut off, or behaves erratically during cycles.
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🔧 Direct replacement — installs in place of the original timer without major modifications; uses existing wiring and mechanical mounting.
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🧺 Improves reliability & longevity — by restoring correct operation, you reduce stress on the motor, heating element and other components.
⚠️ Common Symptoms
You may need to replace this timer if your dryer shows:
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Timer knob or dial doesn’t advance, skips settings or gets stuck. ShopJimmy+1
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Dryer tumbles but doesn’t heat or heats inconsistently, despite vents and filters being clean.
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Dryer runs continuously with no end of cycle, or runs much longer than normal.
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Dryer won’t start properly or the cycle doesn’t progress.
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The original timer shows signs of damage or the contacts are burned out. Reliable Parts
🔧 Compatible Model List
Fits many dryer models from brands like Whirlpool, Maytag, Kenmore (and associated platform lines). Example models include (but are not limited to):
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Maytag/MED series: MED5570TQ0, MED5591TQ0 Reliable Parts+1
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Whirlpool models: WED5540ST0, WED5560SQ0, WED5530SQ0 Alliance Laundry+1
Note: Always verify your dryer’s exact model number (on the rating plate) to ensure correct timer variant.
🔁 Cross Reference
Replaces and is compatible with part numbers:
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WP8578906 (OEM)
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8578906 (legacy) Reliable Parts+1
🧩 Compatibility Notes
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Confirm your dryer’s model number label (usually inside the door frame or on rear panel) to ensure this part fits your machine.
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The timer is typically located behind the dryer’s control console, connected via wiring harness and mounted to the timer shaft/knob.
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If the timer failed due to wear or electrical damage, consider checking related parts such as the door switch, thermal fuse, heating element, and venting/airflow, as underlying issues may cause shortened timer life.
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Proper installation requires alignment of the timer shaft and knob, secure wiring connections, and verification of correct cycle progression after installation.



