Author Topic: Help. LG Washer Dryer Combo  (Read 2572 times)

Offline wildimaginations

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Re: Help. LG Washer Dryer Combo
« Reply #10 on: March 15, 2013, 10:47:55 PM »
You may have a stripped rotor on the motor shaft.  You can check it by removing the rear panel and run the machine.  If you can see the rotor in back turning but the drum is not, you will need to replace the rotor (4413ER1003B) and the bolt (4040FR4051C). 

According to the serial number, the rotor should be covered under the motor part warranty so ask LG about it.  The bolt is not covered but you should replace the old bolt.  This is a 17mm bolt. 

Hope this helps.
Appliance Service Technician
Authorized servicer on LG appliances.
About 45 mins east of San Francisco

Offline john63

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Re: Help. LG Washer Dryer Combo
« Reply #11 on: March 15, 2013, 11:20:48 PM »
<<<I immediately think hall effect sensor>>>

<<<You may have a stripped rotor on the motor shaft.>>>

*******

Both are highly unlikely.

During 2008---the HALL EFFECT SENSOR and the ROTOR were upgraded.

Hall Effect Sensors now have a larger *resistor*

Rotors were changed from having plastic spines---to a *steel spline* insert.

kat55's LG laundry combo was built December 2010


Offline wildimaginations

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Re: Help. LG Washer Dryer Combo
« Reply #12 on: March 15, 2013, 11:33:52 PM »
Still check the rotor, anyway.

Appliance Service Technician
Authorized servicer on LG appliances.
About 45 mins east of San Francisco

Offline john63

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Re: Help. LG Washer Dryer Combo
« Reply #13 on: March 15, 2013, 11:40:54 PM »
This is my *interpretation* of kat55's post...

So I have LG washer dryer combo.

I have had it about 3 years.

I do ALOT of laundry so it gets used for 1-2 loads daily at a min.

I have replaced the drain pump twice and one of the circuit boards.

Now in the wash cycle it doesn't *TUMBLE*.

It makes this whiny noise like it wants to *TUMBLE* but doesn't it doesn't tilt or move either.

Ironically though when it is in dry cycle it will *TUMBLE* just fine.

Weird.

I do not know what part to replace.

I have not gotten any error codes but it is not washing clothes good at all due to this problem.

Thank you guys for the help




Offline wildimaginations

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Re: Help. LG Washer Dryer Combo
« Reply #14 on: March 16, 2013, 12:00:58 AM »
During the wash cycles, there's enough torque for the rotor splines to skip causing the whining sound.  During the tumble dry, the rotor turns slower and thus is able to turn the drum with little effort.


Usually the reason for this problem is because the bolt loosens up and allows some play in the splines causing the rotor to skip when enough play has worn out the splines.  The next time you see this, check the bolt first.  You will find that the bolt has backed off from the rotor.  I see this all the time for this problem.

That's my interpretation.
« Last Edit: March 16, 2013, 12:03:45 AM by wildimaginations »
Appliance Service Technician
Authorized servicer on LG appliances.
About 45 mins east of San Francisco

Offline john63

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Re: Help. LG Washer Dryer Combo
« Reply #15 on: March 16, 2013, 12:10:53 AM »
<<<Usually the reason for this problem is because the bolt loosens up and allows some play in the splines causing the rotor to skip when enough play has worn out the splines.>>>

<<<That's my interpretation.>>>

***************

An *accurate* intrepretation for the old WM0642 washer---which was known for this symptom :)

A factory error---caused by someone forgetting to add threadlocker to the 17mm bolt---for about six months of production---before it was corrected.

I've never witnessed this on a *steel spline* ROTOR.

Offline domain

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Re: Help. LG Washer Dryer Combo
« Reply #16 on: March 16, 2013, 08:31:03 AM »
John I corrected myself on my second post about the hall sensor O0. Although many units have had stripped plastic splines, that is a distinct GRINDING noise not squeal ;)BUT check it for comfort.... O0

Offline john63

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Re: Help. LG Washer Dryer Combo
« Reply #17 on: March 17, 2013, 01:17:55 AM »
Zoom photo image of WM3987 ROTOR.

Note the black-colored steel spline insert...

http://www.repairclinic.com/PartDetail/Rotor-Assembly/4413ER1003B/1519486?modelNumber=WM3987HW
 
Zoom image of original ROTOR (in this case---from an older WM2277 washer)
Plastic spline...
 
http://www.repairclinic.com/PartDetail/Rotor-Assembly/4413EA1002B/1267508?modelNumber=WM2277HW
« Last Edit: March 17, 2013, 01:21:14 AM by john63 »

 

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