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Maytag
Dryer

Model # MDG6400AWW Official Maytag washer/dryer

Here are the diagrams and repair parts for Official Maytag MDG6400AWW washer/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.

Installation guide
Owner’s manual
Error Codes

Model diagram and schematic

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Showing 10 of 160 parts  |
Second Coil 306105
#8

Gas valve diagram

Second coil

Part #306105

Replaced by #279834

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Manufacturer substitution
This part replaces 306105. Substitute parts can look different from the original.
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Holding Coil 306106
#7

Gas valve diagram

Holding coil

Part #306106

Replaced by #279834

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Manufacturer substitution
This part replaces 306106. Substitute parts can look different from the original.
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Roller W/bea 303373
#24

Tumbler diagram

Roller w/bea

Part #303373

Replaced by #12001541

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Manufacturer substitution
This part replaces 303373. Substitute parts can look different from the original.
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Dryer Drum Belt 33002535
#18

Tumbler diagram

Dryer drum belt

Part #33002535

Replaced by #WP33002535

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Manufacturer substitution
This part replaces 33002535. Substitute parts can look different from the original.
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Dryer Drum Bearing Kit (replaces 312940, 312941) 306508
#10

Tumbler diagram

Dryer drum bearing kit (replaces 312940, 312941)

Part #306508

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Idler Arm 33001840
#19

Motor drive diagram

Idler arm

Part #33001840

Replaced by #WP6-3705180

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Manufacturer substitution
This part replaces 33001840. Substitute parts can look different from the original.
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Gas Igniter 304970
#4

Gas valve diagram

Gas igniter

Part #304970

Replaced by #4391996

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Manufacturer substitution
This part replaces 304970. Substitute parts can look different from the original.
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Tumbler Shaft 312948
#23

Tumbler diagram

Tumbler shaft

Part #312948

Replaced by #WP6-3129480

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Manufacturer substitution
This part replaces 312948. Substitute parts can look different from the original.
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Blower Wheel Clamp 312967
#5

Motor drive diagram

Blower wheel clamp

Part #312967

Replaced by #WP312967

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Manufacturer substitution
This part replaces 312967. Substitute parts can look different from the original.
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Washer Screw 211294
Washer screw

Part #211294

Replaced by #WP90767

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Manufacturer substitution
This part replaces 211294. Substitute parts can look different from the original.
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$4.37 | 
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Most common symptoms to help you fix your dryers

Choose a symptom to see related dryer repairs.

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Why won't my dryer heat?

Main causes: bad gas valve coils, broken heating element, tripped safety thermostat or fuse, bad operating thermostat, c…

Read more

Why won't my dryer shut off?

Main causes: bad timer or electronic control board, door switch failure…

Read more

Why doesn't my dryer work?

Main causes: lack of electrical power, bad power cord, wiring failure, bad control board, blown thermal fuse, bad door s…

Read more

Why does my dryer start then stop?

Main causes: clogged exhaust vent, bad motor relay, loose dryer door catch, bad door switch, control system failure, fau…

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Why won't my dryer door stay shut?

Main causes: damaged door strike, worn door catch…

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Why is my dryer making a rattling noise?

Main causes: bad drum support roller, damaged idler pulley, broken blower fan blade, worn drum glide bearing, bad drive …

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Why isn't my dryer getting my laundry dry?

Main causes: clogged exhaust system, heating system failure, deposits on moisture sensor, control system failure…

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Why won't my dryer start?

Main causes: door switch failure, lack of power, broken belt, blown thermal fuse, bad drive motor, control system failur…

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Most common repair guides to help fix your dryers

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

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How to replace a thermal fuse in an electric dryer

How to replace a thermal fuse in an electric dryer

When the air in the dryer overheats—usually because the vent is clogged—the thermal fuse blows, stopping the dryer. You …

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Repair difficulty
Time required
 15 minutes or less
How to install a thermal cut-off fuse kit in an electric dryer

How to install a thermal cut-off fuse kit in an electric dryer

The thermal cut-off fuse shuts off the heat if the dryer overheats when the high-limit thermostat fails. Install a ther…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a dryer door switch

How to replace a dryer door switch

The dryer won't start if the door switch isn't working correctly. You can install a replacement dryer door switch in les…

Read more
Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your dryers

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

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How to use your clothes dryer efficiently

How to use your clothes dryer efficiently

Get expert tips on using your dryer efficiently to save energy.…

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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