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7MMGDC400DW1 Maytag Dryer - Instructions

All Instructions for the 7MMGDC400DW1
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Rear Dryer Seal was old and staining clothing
After unplugging the dryer,I removed 2 bolts on the back top of the dryer, then removed the two screws in the lint box area. I used a screw driver to help force the top panel of the dryer up. When open, I removed the top screws that held the front and side panels together. I then lifted the front panel up and away from the dryer, so there would be room to take the drum out. I removed the belt from the pulley (located under the drum) and slid the drum out. I removed the old seal, cleaned up the drum and the inside of the dryer, then glued the new seal on. After the glue was dry, I put the drum back in (with the belt on the drum), put the belt back on the pulley and proceeded to put the dryer front back on. Once the front was on, I put the top back on and replaced the bolts on the back of the dryer. I plugged it in and it is working great! By the way, before this, I had NEVER attempted to repair a dryer before and I am female. If I could do it, so can anyone else willing to try :)
Parts Used:
Rear Drum Felt Seal
  • Grace from Phoenix, AZ
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers, Socket set
58 of 64 people found this instruction helpful.
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The dryer would start to heat then the heat would stop
I changed out the cycling thermostat and the high limit thermostat. Mainly because that was what my research indicated was the problem. I then found some more information online that indicated the gas solenoid valves were bad. I ordered them from you and replaced them. The problem was fixed.

In order to replace the valves you need to remove the top panel. Two screws at the top of the front door assembly hold it on. Remove the screws, lift up on the front panel door assembly and move it to the side. The drum will rest in place. In the lower left corner, under the drum, you will see the solenoids. Two screws attach a plate that holds down the solenoids. Take the hold down plate off, disconnect the control wires attached to the solenoids and lift out the solenoid/control valves. To assemble everything, work backwards to the start. Good Luck
Parts Used:
M Series New Style Coil Kit M Series New Style Coil Kit
  • Theodore from Riverside, CA
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Nutdriver, Screw drivers, Wrench set
56 of 66 people found this instruction helpful.
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dryer would get hot for a while, then quit heating
After reading about other people with this same problem I took a chance that this would be what was wrong with my dryer.I took off the front cover of the dryer by removing two screws. I located the faulty coils and simply plugged in the 2 new coils Tah-dah Probably coud have been done without even removing the front panel, but since it was off I vacuumed out the lint ( actually my husband did all of the above, but I tell a better tale than he does and I diagnosed the problem and ordered theparts)
Parts Used:
M Series New Style Coil Kit M Series New Style Coil Kit
  • Sharon from Houston, TX
  • Difficulty Level:
    Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Screw drivers
54 of 66 people found this instruction helpful.
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Dryer making loud squealing noise when running
The (front) bearing and seal are not metal parts but a fabric and and mesh like material. It is somewhat like a fabric belt made to hold up a pair of trousers. The belt sits in a channel that goes around the door on the inside of the front panel. To get to the combination bearing/seal you remove two screws that are located under the cover of the lint trap. These have to be removed to lift the top. Then using a putty knife or screw driver you must pop the top (which snaps down on plastic clips) at the front corners. The top lifts up and folds back on hinges. The front is attached to the sides by one screw on each side near the top. A nut driver will remove then easily. Once the 2 screws are removed lift the front panel about 2 inches to disengage the front panel from the clips that hold the front attached to the sides near the bottom. When you remove the front panel the dryer drum will literally fall out so you want to get hold of it before pulling the front panel away so it isn't damaged and and doesn't damage the gas burner assembly which is under the drum to the left side. The drum is very light. I supported it with an empty shoe box while the front was off.
Once the front is off you'll see the bearing/seal on the inside of the front panel and it will be obvious how to remove the old one and place the new one. There are three pegs on the front panel that receive the three holes in the fabric bearing/seal. The seal will stay in place while you remove the shoe box and put the front cover back on. The drum fits over the seal like a lid on a jar and just slides on the fabric when the drum rotates. Low tech but the drums slides easily on the bearing material and seems to last a long time.

I also did the rear dryer seal. This is similar to the front. To do this you follow the procedure above but to get to the real seal you will have to remove the drum. It will fall out on its own if the front panel is removed. The drive belt goes around the drum. It is about 3/8th of and wide and just wraps around the drum without any teeth or channels or anything. Let the belt fall to the bottom as you lift the drum forward and out of the cabinet. The drum is light. Just put it on the floor and strip off the old rear seal which is glued on. It too is fabric. Clean up the drum a little and fit the new seal on the drum. Once the seal is on the drum you can lift the edge of the fabric seal and glue the fabric flange to the drum. This becomes pretty obvious once you have the seal on the drum. If you put the glue on the drum first you will make a mess. Put the seal on properly and the lift the edge to apply the adhesive all the way around. The adhesive sets enough in a hour or so. Put the drum back in and replace the front panel. Don't forget the drive belt. It goes around the drive motor that is located on the bottom of the dryer on the right, around or over an idler pulley (my older model does not have a idler wheel but rather a bracket with a "slide" that the belt runs over that keeps sufficient tension on the belt to drive the drum. If your belt falls off the motor and the idler pulley falls out it may be confusing how the belt goes in. My idler bracket is held in slots on the bottom of the cabinet merely by the tension of the belt - no screws or anything. I suggest that you put the belt around the drum first, then the drive motor. You will have slack in the belt and it becomes a little more obvious how the idler pulley (which is mounted on spring steel) goes in and takes up that slack and keeps modest tension on the belt. The rubber side of the belt goes against the drum, the leathery side is the outside.
Parts Used:
Seal and Bearing Rear Drum Felt Seal
  • Stephen from Springfield, MA
  • Difficulty Level:
    Easy
  • Total Repair Time:
    1- 2 hours
  • Tools:
    Nutdriver, Screw drivers
49 of 51 people found this instruction helpful.
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Intermittent or no gas ignition, HSI ignightor working
Removed front of gas dryer and cleaned all lint out. Checked HSI, and cleaned flame sensor. Split (3 terminal) gas coil terminals were intermittent. Read about 700 ohms across outer two terminals, but center terminal to either outer terminal was open (Infiniti on meter) 2 terminal coil measured about 550 ohms. 3 terminal coil should read about 700 ohms across outer terminals, and about 1.5K ohms center to outer terminals. Unscrewed index cover plate and replaced coil, 2 terminal coil was okay. Reassembled and finished 12 loads of laundry no problems at all.
Parts Used:
M Series New Style Coil Kit
  • Steven from Sauk Village, IL
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Nutdriver, Screw drivers
43 of 48 people found this instruction helpful.
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Gas Flame Would Drop Out
First it was a process of alimination to find out why it was dropping out. After the problem was found it was just a matter of replacing the holding coil on the gas valve. Thank you fred kenney sr
Parts Used:
Dryer Radiant Flame Sensor
  • FRED from BRIELLE, NJ
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Nutdriver, Screw drivers
47 of 64 people found this instruction helpful.
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Scratches in Surface
This product comes in a bottle with a brush like Liquid Paper. It goes on incredibly easy. A second coat might be needed. I wanted to prevent rust from setting in so I covered the scratches and dings. The paint is a little brighter since my washer is 10 years old but it still looks great.
Parts Used:
Touch-Up Paint - White
  • Michelle from Richardson, TX
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    Less than 15 mins
65 of 126 people found this instruction helpful.
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Gas burner would not ignite
(I knew the gas coils were bad, since the gas ignitor would glow brightly as the burner attempted to ignite. So I knew everything except the gas valve was operating normally.)

Unplug the electrical cord to the dryer. Remove the front access panel. Remove the retainer clip for the gas coils (2 screws). Remove the coils and unplug the electrical connections. Connect the new coils to their respective electricl connections. Slide the nes coils back onto their respective posts on the gas valve. Replace the retainer clip, and 2 screws to hold it in place. (I then plugged the dryer back into the wall outlet to visually check the burner operation) Everything worked fine so I then replaced the front panel.
Parts Used:
M Series New Style Coil Kit
  • Jack from Conroe, TX
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers, Wrench set
36 of 40 people found this instruction helpful.
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Dryer would start and heat, but after 1st cycle the burner would not fire and a buzzing sound was coming from the gas valve solenoid area. Igniter and other functions worked fine.
Removed front of dryer, unplugged each coil to determine where buzzing was coming from.....determined it was the boosting coil....ordered part and replaced. Dryer works great....we think it had be going bad over time because drying times have noticeable decreased.
Parts Used:
M Series New Style Coil Kit
  • David from Bedford, IN
  • Difficulty Level:
    Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Screw drivers, Wrench (Adjustable)
31 of 36 people found this instruction helpful.
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dryer would not continuously heat, and took several cycles to dry clothes. The flame would ignite and heat the dryer at first, but then would ignite and go out quickly for the rest of the cycle. I tried the thermostats first with no luck.
I first ordered the coils from a different web site and they sent the wrong ones. The job would have been much eaiser if i had just returned and ordered from here. Instead i cut wires and tried the others but since they were worng, it did not work. I didn't label the wires so it was a puzzle to put it back together. Once i had the wires connected properly it was a simple fix. You just open the top and take the front pannel off, remove the drum and it is right there at the bottom. Two screws take the cover off of the coils and they slide off the gas valve. Slide the new ones on and replace the cover. Put the front pannel back on, close the top and its good to go. I first tried the highlimit thermostat, and termostat with no luck. The flame would light when it was cold, but once warmed up, the flame would ignite and immediatly go out. The coils did the trick.
Parts Used:
M Series New Style Coil Kit
  • Ryan from Livonia, MI
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Nutdriver, Pliers, Screw drivers
30 of 34 people found this instruction helpful.
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My dryer only heats up at the beginning of cycle so my clothes will not dry.
I remove the front control panel and to get to the bottom front dryer door off. Using my volt meter i checked all the sensors and thermal. I surf the internet for hint and some one mention to replace the coil since some time you could have one goes out and the other working still. After i replaced the coil kit it works like a champ.
Parts Used:
M Series New Style Coil Kit
  • Monique from Mission Viejo, CA
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Nutdriver, Screw drivers, Socket set
31 of 38 people found this instruction helpful.
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converting to LP gas
First I removed the front panel which allowed access to the burner assembly. Then I removed the gas connector and elbow from the back of the dryer. Then I removed 2 screws that hold burner assembly in place and 2 screws that hold an angle brace for the burner assembly. Had to loosen the screw that clamps around the gas pipe holding it in place clear in the back inside dryer housing. Unplugged all wiring connectors, then I removed the burner assembly and removed the 2 screws holding the burner tube to the valve. Remove the orifice and replaced with the proper size for LP gas. Then removed the blocking pin and replaced with one for LP gas. Then reassembled in reverse order. Actually pretty easy.
Parts Used:
LP GAS CON
  • Robert from Tenino, WA
  • Difficulty Level:
    Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Socket set, Wrench (Adjustable)
30 of 36 people found this instruction helpful.
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Dryer would dry for 5-10 minuets then no heat
I tested the dryer coils and found that they were getting a voltage but would not open the gas valve. Coils were not bad but weak. After they warmed up they would not open the gas valve. It took 10 min to repace both coils and the heat sensor.
Parts Used:
Dryer Radiant Flame Sensor M Series New Style Coil Kit
  • Richard from Jerome, MI
  • Difficulty Level:
    Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers, Socket set
35 of 55 people found this instruction helpful.
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Dryer would not heat up.
I unplugged the dryer,removed the two small screws on the front of the dryer and pulled the bottom forward. The two wires connected to the door do not have to be removed. With an electrical tester using the Ohm setting I tested the Radiant sensor and the Gas Valve coils. The two terminal coil was DOA. The dryer can be operated with the front open as long as the door wires are connected. Symptons: The igniter would heat up and not release gas. My repair was successfull due to this awesome website and the super fast shipping service. AAAA++++
Parts Used:
Dryer Radiant Flame Sensor
  • Roger from Bonners Ferry, ID
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Nutdriver, Screw drivers
26 of 29 people found this instruction helpful.
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no heat
the ignitor did not glow red checked thermal fuse by exhaust duct. fuse open replaced thermal fuse
Parts Used:
Igniter Kit
  • rex from streator, IL
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Nutdriver, Wrench (Adjustable)
28 of 36 people found this instruction helpful.
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All Instructions for the 7MMGDC400DW1
16 - 30 of 594