Author Topic: Kenmore 70 series dryer issue  (Read 7823 times)

Offline dad4taylor

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Kenmore 70 series dryer issue
« on: January 29, 2010, 08:22:33 PM »
I've been having problems with my 70 series Kenmore dryer:

About 4 months ago the motor went bad so I replaced it.  While I was at it I cleaned the entire dryer exhaust.

About 1 month ago the dryer would not come on (cold) and the thermal fuse (the long white one) did not have continuity so I replaced it and the dryer worked fine.

Now the dryer works for some amount of time and then shuts off completely.  When you hit the start button you here a thud or click like the motor relay is kicking in but it does not go.  Let the dryer sit for ten minutes and it will work again.

It seems like I have some sort of heat related issue, hopefully it's not the motor.  While I was changing the motor there appeared to be some sort of device attached to the burner shroud and I may not have gotten the wires back on correctly?  I think there may also be some sort of thermostat near the thermal fuse at the back of the unit.  I'm pretty much confused at this point because I can't seem to correlate the wiring diagram with the actual hardware with regards to thermal devices.

Model 110.76722690

Offline JWWebster

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Re: Kenmore 70 series dryer issue
« Reply #1 on: January 29, 2010, 08:31:23 PM »
It ain't gonna be the motor because that is on another circuit. How about the rollers idler and glides? Does the drum turn easy? Could their be anything causing the motor to get hot and quit?
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Offline dad4taylor

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Re: Kenmore 70 series dryer issue
« Reply #2 on: January 29, 2010, 08:45:05 PM »
The drum turns easily. The idlers appear to be ok

Your reply leads me to believe that if I had a thermal part going bad then the motor would run but the heat would be cut off?

Offline kellonnie

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Re: Kenmore 70 series dryer issue
« Reply #3 on: January 29, 2010, 09:01:00 PM »
check the blower fan something may be stuck in there causing the motor to heat up and cut off

Offline JWWebster

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Re: Kenmore 70 series dryer issue
« Reply #4 on: January 29, 2010, 09:10:22 PM »
You might have to check the blower housing for objects and whaile you are at it wash out the filter housing
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Offline dad4taylor

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Re: Kenmore 70 series dryer issue
« Reply #5 on: January 29, 2010, 09:11:34 PM »
Am I correct in assuming that if I have a thermal fuse or thermostat issue (not installed on or in the motor) then if one of those went bad the motor would continue to run but the dryer would not produce heat?  That would narrow it down to to the motor and/or it's ability to turn.

Offline JWWebster

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Re: Kenmore 70 series dryer issue
« Reply #6 on: January 29, 2010, 09:40:43 PM »
cannot answer that  your model number is unknown
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About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack. The small green square=personal message. The green dot is a link to my web page on appliance repair and other general BS I love to post. The letter sends me email.
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Offline dad4taylor

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Re: Kenmore 70 series dryer issue
« Reply #7 on: January 29, 2010, 09:43:50 PM »
Turned the drum by hand- no issues at all.

Removed the front off the dryer and checked the Idler and rollers- I can spin them easily

Removed the back panel and blower housing- all clear and still very clean from when cleaned when the motor was replaced months ago

Checked the lint filter and lint hose- Lint hose runs about 3 feet to outside, all clear.  Lint filter clean and is always cleaned after every use

Put it all back together and am running it now to see if the disassembly/assembly shook something loose or ??? that would make things better.

Offline dad4taylor

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Re: Kenmore 70 series dryer issue
« Reply #8 on: January 29, 2010, 09:59:49 PM »
Ahhh... there is a 110 in front of that number....

The number is shown as:  110.76722690   76722

I checked that number and it doesn't come up either.....

The wiring diagram is 3401736 rev a

Offline dad4taylor

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Re: Kenmore 70 series dryer issue
« Reply #9 on: January 29, 2010, 10:16:55 PM »
Grrrrr......I tried to get a pic of the model sticker but it keeps coming out blurry.  Then I made a scan of the wiring diagram and the file is too big @ just under 1MB.... man I hate technology.  If we were all living in caves the sun would dry my clothes.....

Offline JWWebster

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Re: Kenmore 70 series dryer issue
« Reply #10 on: January 30, 2010, 12:34:07 AM »
I was able to make 110.76722690 work. That dryer would not run if the skinny white fuse on the blower housing was blown but the limits on the element could blow and the dryer will still run. If the high limit(the small one on top of the heater) blows it is usually from a blocked vent.



Dryer Thermal Fuse Part # 3392519



Dryer High Limit Thermostat Part # 3403140
« Last Edit: January 30, 2010, 12:35:59 AM by JWWebster »
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Offline AJ

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Re: Kenmore 70 series dryer issue
« Reply #11 on: January 30, 2010, 05:29:56 AM »
I updated the topic to include the correct model number information, thanks!
Hope you find our site helpful.

Offline dad4taylor

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Re: Kenmore 70 series dryer issue
« Reply #12 on: January 30, 2010, 12:00:20 PM »
So I'm not really sure where we're at here....  The only thermal device that would make the motor not run is a thermal fuse.  That sure isn't my problem because when that goes it does not come back an allow me to run the dryer ten minutes later.  Does that leave me with a bad motor or something affecting the motor in a bad way.  I am 100% sure that my vents are clear and that the idlers and wheels allow the drum to turn very freely.

Offline dad4taylor

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Re: Kenmore 70 series dryer issue
« Reply #13 on: January 30, 2010, 12:12:24 PM »
I guess I could in theory run the dryer at a low heat setting and see if it turns off after 20 minutes... if it doesn't then my problem may not be a motor under strain but something having to do with a thermostat heating up?

Offline whirlpooltech

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Re: Kenmore 70 series dryer issue
« Reply #14 on: January 30, 2010, 12:12:54 PM »
Is this a gas or electric dryer?
I looked up the model number and it's listed as a electric, but only shows a few diagrams and they seem to be of a gas dryer.

Quote
While I was changing the motor there appeared to be some sort of device attached to the burner shroud and I may not have gotten the wires back on correctly?




 

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