NG8639 Dryer - Instructions

Watched youtube video to problem shoot. Cause determined to be coils bad. Searched web found Parts Select to be easiest site to deal with and had coils for best price. Followed instructions supplied with parts. Dryer works like new.

Door switch was very easy to replace as it simply snaps in for the outside and you just clip on the two control wires that already have clips on them.

Removed lower front panel.

Removed door assembly* making note of the wire positions on the door switch
* When removing the door assembly DO NOT LET IT DROP DOWN! Doing so will destroy the door switch. Swing the door assembly upward from the bottom toward you as high as it will go then pull it free.

Removed the drum and belt assembly.

Removed the idler pulley and idler pully spring.

Vacuumed up the interior dryer floor and blew out the motor w/ comp air. Also cleaned the ribbed motor pulley with a nylon brush and brake cleaner sprayed on a shop towel.

Removed the drum tires and cleaned their shafts and internal bearing sleeves with brake cleaner sprayed on a shop towel.

Reinstalled the drum tires after lubricating their shafts with a very light coat of general purpose grease.

Replaced the idler pulley and idler pulley spring after cleaning and lubing shaft and pulley bearing as done on the drum tires.

Reinstalled the drum with the new belt (ribbed side down) roughly in place.

Reinstalled the front door assembly after reconnecting it's wiring making sure to insert it's top locking tabs with the bottom of the door held up high then swung down into place

Tensioned the belt by positioning the flat side of the belt that comes down the right side of the drum over the idler pulley flat side down and then the ribbed side of the belt over the motor shaft. You will have to move the idler pulley arm to apply full tension against the spring in order to have the slack to get it around the motor shaft.

Reinstalled the lower front panel.

Checked dryer operation OK.

This repair was rated a bit difficult because I didn't know the trick for removing/installing the door assembly and destroyed the switch. Furthermore, putting the belt back on is a somewhat difficult challenge because you have to do it mostly by feel

watched video for Each Part

My gas dryer would run with heat for 5 minutes in all settings, but kick off and not heat again. Timer would not advance in autodry. Thought it was the cycling thermostat, so replaced that, but did not solve the issue. Ordered the coils, and cleaned out heavily clogged lint from bottom of lint trap, especially right above the fan motor at the bottom of the trap. Received the coils, opened the top and front, took out drum, and replaced the coils. The replacement took less than 2 minutes. Be careful putting the drum back on to make sure the felt is not caught inside the drum. You can give it a spin to make sure. Wear gloves, as I cut myself up pretty good on the edges of the dryer body. The inside of my dryer looks like a crime scene! Anyway, I put it back together, and it runs great. Solved the timer advance issue in autodry, and the heat kicks on and off when it is supposed to. Good luck! Thanks Part Select!

Found on your site the top two causes of a Dryer not getting hot enough and ordered those parts ( which were delivered quickly).Removed the top two screws that hold the front of the dryer that gives access to the coils and flame sensor assembly after lifting up the top.It took more time to clean up all the lint than to replace the parts.Dryer works great!

Propped the machine up in the front, removed the front panel, the door assembly, and the front drum support. Use a Sharpie to mark wire positions. This will help during re-assembly. To get the drum out, you first have to remove the belt from the motor pulley. Drum slides right out. You will need snap-ring pliers to remove the pulley from the idler arm. I also replaced the drive belt because it was cheap, and always a good idea to replace it when you are this far into the machine if it is a few years old. Re-assemble in the reverse order of disassembly. An easy fix for the average do-it-yourself person.

As many of the other posts here on this website mentioned, I had the same problem of the dryer not heating up. I removed the front panel (4 screws on each side inside of door - easy - followed instructions) and once off I was able to view the igniter glowing properly so I knew the starter/igniter was not the issue. Everything I read then suggested that it must be the two terminal gas valve coil, and sure enough it was. Ordered part -- got it in literally a couple days -- removed bracket (two screws) put in new coil -- turned it on -- works great. Could not have been easier. This is a great website and would recommend it to everyone who is a Do It Yourselfer.

removed the lens cover, replaced the bulb and reinstalled the lens cover.

i read some of previous customer problems and fixes pulled the front cover off found coil's location when i turned on drier you could see the ignitor getv hot but burner would not ignite unless i put a little pressure on secondary coil when i let go of coil flame would go out. ordered 'M' series new style coil kit came in in about three days installed parts drier workng good i would reuse parts select agian thanks

I removed the two spade connectors and then removed the two 1/4" hex screws. I then simply removed the defective unit and replaced it with the new on and re-installed the two screws and wires.
This was not the problem though.
I turned out to be the solenoids on the gas valve.

Per instructions I printed off online: took off door, then the front panel. Pulled out the old switch/button, connected the new switch/button, made sure the new button was working; put the panel back on then the door and DONE!

Really an easy fix. 2 5/16" screws hold the cover on below the dryer door. From here it's easy access to the gas element. 2 more screws for the valve cover and disconnected the attached wires to the gas coil valves. slip the news ones in place, re-attach the wires and install the holder.Tested the dryer and it fired right up. Put panel back in place and the wife is happy it didn't cost us more than just the parts. Yep, she's a lucky girl. ;0)

After removing the lower access panel, I observed the drum and belt and saw it turning freely. The support rollers in the back turned freely and were in good condition as well. At odd intervals the unit made a humming or grinding noise, and i decided to check the blower wheel (the other rotating part in the system). I found that the central hub of the wheel (which is made of a nylon like plastic) had sheared off from the wheel itself. I ordered a new part and started to remove the old wheel. **NOTE** many of the stories I read described how this part would have a reverse thread, it did not and that cost me an extra 30 minutes to figure out (the new part had arrows showing the correct direction to put on and remove - the original didn't). Once everything was cleaned and reassembled, I started the dryer again, but got no heat. I had previously replaced the heating element, so I thought my wiring was wrong. That wasn't the problem, but a hint from this site about checking the incoming wiring was the solution, my ground wire had come off the terminal in the back of the dryer and I wasn't getting the volatge across the element that it required. With the ground wire back in place, everything worked fine.

I used your great video for pointers as to what to do. I took off the front, raised the top, vacuumed the whole thing up, that took quite a while. Took out the drum. Did more cleaning. Then took off the old retaining rings with retaining ring pliers, took off the old drum rollers and support. Replaced with new roller supports, washer, roller, washer and retaining rings. Then I replaced the belt. Tested it and turned the wrong way and it came off. Replaced and tested it again and I don't know why but it came off. Replaced the belt again, tested fine. Then I replaced the felt pads and glides, they were worn. I ended up asking my husband to help hold the drum so I could get the front back on. Replaced front and door. Tried the dryer. Works great AND very, very little noise. Note: when taking the wiring off the light and the door switch, I took photo's of those places with my cell phone and had them to look at to make sure the wiring was correct.