Whirlpool
Dryer

Model #GEW9878LW1 Official Whirlpool dryer

Here are the diagrams and repair parts for Whirlpool GEW9878LW1 dryer, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Showing 10 of 138 parts

Dryer Drum Belt (replaces 2008, 31531589, 349533, 53-1512, 8210, W10127457, W10131364)#39

Cabinet parts Diagram

Dryer drum belt

Part #8066065
Replaced by #341241
?
Manufacturer substitution
This part replaces 8066065. Substitute parts can look different from the original.
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Dryer Repair Kit (replaces 2014, 279948, 80046, 8238)#NI

Bulkhead parts Diagram

Dryer repair kit

Part #279948
Replaced by #4392065
?
Manufacturer substitution
This part replaces 279948. Substitute parts can look different from the original.
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MSRP: $47.00
Dryer Door Switch (replaces 3406107)#10

Cabinet parts Diagram

Dryer door switch

Part #3406107
Replaced by #WP3406107
?
Manufacturer substitution
This part replaces 3406107. Substitute parts can look different from the original.
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Dryer Door Latch Kit (replaces 2003, 3392538, 3398175, 8208)#29

Cabinet parts Diagram

Strike

Part #696144
Replaced by #279570
?
Manufacturer substitution
This part replaces 696144. Substitute parts can look different from the original.
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Dryer Drum Support Roller Kit (replaces 26000349241, 3397590, 8170)#29

Bulkhead parts Diagram

Support

Part #3397588
Replaced by #349241T
?
Manufacturer substitution
This part replaces 3397588. Substitute parts can look different from the original.
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Dryer Thermistor (replaces 8577274)#8

Bulkhead parts Diagram

Dryer thermistor

Part #3976615
Replaced by #WP8577274
?
Manufacturer substitution
This part replaces 3976615. Substitute parts can look different from the original.
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Dryer Idler Pulley (replaces 691366, W10612905)#38

Cabinet parts Diagram

Dryer idler pulley

Part #691366
Replaced by #WP691366
?
Manufacturer substitution
This part replaces 691366. Substitute parts can look different from the original.
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Dryer Thermal Cut-Off Fuse Kit, 309-degree F (replaces 3399848, 3977393)#9

Bulkhead parts Diagram

Dryer thermal cut-off fuse kit

Part #3977393
Replaced by #279816
?
Manufacturer substitution
This part replaces 3977393. Substitute parts can look different from the original.
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Dryer Drive Motor (replaces 2019, 3388235, 349588, 3980069, 661654, 8066206, 8066207, 8115, 8538262, 8539555, W10194250, W10366770, W10396029, W10396032, W10448892)#43

Cabinet parts Diagram

Dryer motor

Part #8538262
Replaced by #279827
?
Manufacturer substitution
This part replaces 8538262. Substitute parts can look different from the original.
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Dryer Push-to-Start Switch (replaces 3977456)#31

Top and console parts Diagram

Dryer push-to-start switch

Part #3977456
Replaced by #WP3977456
?
Manufacturer substitution
This part replaces 3977456. Substitute parts can look different from the original.
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Symptoms common to all dryers

Choose a symptom to see related dryer repairs.

Main causes: bad drum support roller, damaged idler pulley, broken blower fan blade, worn drum glide bearing, bad drive motor
Main causes: bad gas valve coils, broken heating element, tripped safety thermostat or fuse, bad operating thermostat, control failure
Main causes: bad timer or electronic control board, door switch failure
Main causes: lack of electrical power, bad power cord, wiring failure, bad control board, blown thermal fuse, bad door switch
Main causes: clogged exhaust vent, bad motor relay, loose dryer door catch, bad door switch, control system failure, faulty drive motor
Main causes: damaged door strike, worn door catch
Main causes: door switch failure, lack of power, broken belt, blown thermal fuse, bad drive motor, control system failure
Main causes: clogged exhaust system, heating system failure, deposits on moisture sensor, control system failure

Repair guides common to all dryers

These step-by-step repair guides will help you safely fix what’s broken on your dryer.

August 1, 2014
Lyle Weischwill
How to replace a dryer drum support roller

If your dryer thumps or squeals, replace the drum support roller to restore quiet to your home.

Repair difficulty
Time required
 90 minutes or less
August 1, 2014
Lyle Weischwill
How to replace a dryer thermistor

The thermistor senses the air temperature in the dryer. If your dryer overheats or doesn't heat at all, the thermistor could be the problem.

Repair difficulty
Time required
 30 minutes or less
August 1, 2014
Lyle Weischwill
How to replace a dryer idler pulley

The idler pulley exerts pressure keeps the drive belt tight so it can rotate the drum. A worn idler pulley squeals or squeaks when the dryer is running. Follow these instructions to replace it.

Repair difficulty
Time required
 90 minutes or less

Articles and videos common to all dryers

Use the advice and tips in these articles and videos to get the most out of your dryer.

October 24, 2022

Easy DIY appliance repairs that anyone can do

Lyle Weischwill

Get advice on simple DIY fixes for appliances that you can safely do on your own.

January 4, 2022

How to replace a Maytag dryer heating element

Lyle Weischwill

Learn how to replace a Maytag dryer heating element

August 17, 2021

How to read a wiring schematic video

Lyle Weischwill

Learn how to decipher symbols so you can buy the right part for your problem.