Author Topic: Kenmore 90 Series - No agitation  (Read 8995 times)

Offline jastek

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Kenmore 90 Series - No agitation
« on: February 19, 2008, 01:11:31 PM »
I have a Kenmore 90 series washer (direct drive, 3 speed motor) that fills with water, then stops instead of agitating.  When it stops, the motor buzzes/hums.   I have replaced the switch on the motor and replaced the motor itself ( I have a spare washer for parts, so the parts were free), but it still does not work.

When this first happened, there was also a burning (electrical) smell.

If I advance the cycle to spin, the drum will spin and the water pumps out.

Any ideas?

Model 110.20922990

Offline JWWebster

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Re: Kenmore 90 Series - No agitation
« Reply #1 on: February 19, 2008, 04:07:19 PM »
have ye tryed the motor while it was not reconnected to the transmission? If it kicks ok when NOT under a strain it may be the tranny. Replacing the tranny ai'nt much harder than replacing the motor. Grab the tranny outta the spare and do a dry run ,by the way have you looked inside the pump. It might have a sock or bra in it, I have seen that.
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Offline jastek

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Re: Kenmore 90 Series - No agitation
« Reply #2 on: February 19, 2008, 07:51:54 PM »
I have checked the pump and there was nothing stuck in there.  I thought about switching out the tranny, but I pulled the pump off and turned the motor both directions and it turned with no difficulty,  When I turned it clock wise, the drum turned and when I turned it counter clockwise, the agitator turned.

Wouldn't that suggest that the tranny is ok?

Could this be caused by a bad timer?

Offline JWWebster

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Re: Kenmore 90 Series - No agitation
« Reply #3 on: February 19, 2008, 08:20:58 PM »
Well if you think it might be the timer you can remove the timer dust cover and manually turn the drum in it by hand and look for burn marks.The timer knobs screws off lefty loosy then the timer escruchin ( that's fancy name fer a dial indicator) comes straight out and exposes 2 5/16inch screws. once they are removed the timer just has a quick disconnect plug.
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Offline jastek

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Re: Kenmore 90 Series - No agitation
« Reply #4 on: February 19, 2008, 08:34:48 PM »
No burn marks on the drum in the timer.  Can it be a burned out motor on the timer?

I don't know if its the timer, but something smelled like burning electrical when this first started.

Maybe it is the tanny.

Offline BrntToast

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Re: Kenmore 90 Series - No agitation
« Reply #5 on: February 19, 2008, 09:04:21 PM »
unclip motor from trans, leave wiring connected, stand on motor so the torque doesn't cause it to twist and start machine, if the motor turns unhooked from trans then you need a trans, otherwise you prolly need a timer
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Offline RegUS_PatOff

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Re: Kenmore 90 Series - No agitation
« Reply #6 on: February 19, 2008, 11:15:19 PM »
...When it stops, the motor buzzes/hums.   I have replaced the switch on the motor and replaced the motor itself...
did it do the same thing before you replaced the switch and the motor ?

I think it's the timer, there's a set of multiple contacts that reverse the motor for spin and agitate. One set may be working (spin), but the agitate contacts are probably bad.
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Offline JWWebster

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Re: Kenmore 90 Series - No agitation
« Reply #7 on: February 20, 2008, 08:05:06 AM »
If you do that test like BT said you can watch the motor shaft and see if it goes both ways.

BT said: unclip motor from trans, leave wiring connected, stand on motor so the torque doesn't cause it to twist and start machine, if the motor turns unhooked from trans then you need a trans, otherwise you prolly need a timer.
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Offline jastek

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Re: Kenmore 90 Series - No agitation
« Reply #8 on: February 20, 2008, 08:53:56 AM »
I think I have narrowed it down to the timer.  After I took off the timer and removed the dust cover to check it, I reinstalled the timer and now the machine agitates, but makes all kinds of clicking noises and runs really rough.  Now, none of the other controls work either (water temp, speed, water height).

So, the question is whether or not a $120 timer replacement is worth it it or not.  It might be time for one of those high efficiency models.

Offline RegUS_PatOff

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Re: Kenmore 90 Series - No agitation
« Reply #9 on: February 20, 2008, 09:40:22 AM »
...I reinstalled the timer and now the machine agitates, but makes all kinds of clicking noises and runs really rough... 
what makes the "clicking noises and runs really rough" ? the timer or the machine ?
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Offline jastek

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Re: Kenmore 90 Series - No agitation
« Reply #10 on: February 20, 2008, 10:22:14 AM »
The clicking noise is coming from the switch that is mounted on the motor (not the capacitor).  When it agitates it is not a smooth motion.  It jerks more than it usually does.

Offline RegUS_PatOff

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Re: Kenmore 90 Series - No agitation
« Reply #11 on: February 20, 2008, 11:03:24 AM »
the switch on the motor is a "centrifugal switch"

The timer contacts send the voltage to the centrifugal switch which connects the motor's "start" windings, and when the motor is up to speed, it switches to the "run" windings, if the motor slows down too much it'll switch back to the "start" windings.

Either the switch is bad or the motor has a problem keeping up to speed (or because of the tranny)

or the contacts in the timer are still "bouncing"
« Last Edit: February 20, 2008, 11:06:59 AM by RegUS_PatOff »
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Offline jastek

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Re: Kenmore 90 Series - No agitation
« Reply #12 on: February 20, 2008, 11:45:25 AM »
Can the contacts on the timer really bounce so much that they would cause that?

Offline RegUS_PatOff

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Re: Kenmore 90 Series - No agitation
« Reply #13 on: February 20, 2008, 11:55:41 AM »
maybe if they don't have very much "spring force" left to keep them held closed... depending on how much the washer is vibrating ...

it's hard to tell without "being there"
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Offline jastek

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Re: Kenmore 90 Series - No agitation
« Reply #14 on: February 20, 2008, 12:10:12 PM »
Well, I checked around for a new timer and there are none to be had unless I wait 1 week or pay for next day shipping.  I am going to take apart the timer (I know, that's not a good idea) and try to see if I can do something with it.

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