Author Topic: Maytag MDE4000AYW dryer will not rotate  (Read 6518 times)

Offline robpmorrison

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Maytag MDE4000AYW dryer will not rotate
« on: May 25, 2012, 09:07:28 PM »
We bought this dryer back in Sep 1999.  It has been excellent and we have not had any problems with it for the past 12.5 years.  I have pulled the front off of it every couple of years to make sure all the lint is cleaned out of it.  It was working through last Saturday night.  On Sunday morning the start button was pushed again and all it would do is buzz and the tumbler would not move.  I can move the tumbler by hand with force so I am assuming the belt is still in place.

I have been doing some reading and from what I am finding it could be either the motor or some sort of fuse or relay connected to the motor.  However I have not found anyone who has described exactly what I am finding with this dryer. 

I realize that I can make a cable to plug the dryer motor in to see if it runs and I may do that tomorrow.  I would just like to get it fixed for my wife.

I videoed what it is doing this morning when you push the start button.  Please go to here in order to veiw it

Thanks

Rob

Offline bigbuck

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #1 on: May 25, 2012, 09:31:39 PM »
Starting windings are bad on motor, replace motor assy.

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Offline robpmorrison

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #2 on: May 26, 2012, 11:25:31 AM »
BigBuck, Thanks.  I tried it again today and it started to turn but it took a bit so I am sure you are right when it comes to the starter. 

So I am going to change out the motor.  Now here is another question.  I have gone to several sites and there are 3 different part numbers for this motor that are coming up for the MDE4000AYW Neptune dryer.  They are 33002478, 33002795 and 33002462.  Does anyone have any ideas of which one would be the best one to buy?  They all seem to be the same price.

I haven't pulled the dryer apart yet so I will also do that to see what the actual motor may have on it for a part number.

Offline AJ

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #3 on: May 26, 2012, 11:32:47 AM »
You will need to go by the first two digits of the serial number to figure out the correct motor to order.

Post the first two digits of your model number if you are not sure.

You could also double check the part number on the original motor.
Post the part number of the original motor here if it don't match one below and will see if it crosses to another number.

Serial number starts with 28 order dryer motor part # 33002478   


 
Serial number starts with 55 order dryer motor part # 33002795   
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Offline Brent@CanBC

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #4 on: May 26, 2012, 11:40:00 AM »
MDE4000AYW= 33002795 O0

Offline AJ

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #5 on: May 26, 2012, 11:41:52 AM »
MDE4000AYW= 33002795 O0

Notice the difference between the shafts of the two motors.
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Offline robpmorrison

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #6 on: May 26, 2012, 11:52:00 AM »
The s/n for the dryer is 10632471QW.

Offline robpmorrison

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #7 on: May 26, 2012, 11:55:58 AM »
AJ thanks for the point on the shaft.  These two motors are definitely different.  I am guessing I will need to pull it apart to fully verify.

Offline AJ

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #8 on: May 26, 2012, 12:01:33 PM »
AJ thanks for the point on the shaft.  These two motors are definitely different.  I am guessing I will need to pull it apart to fully verify.

That would be a good idea.
Let us know the numbers posted on the motor.

If none of the numbers on the motor match the numbers I posted it maybe a old part number and I can double check the old number against the new part numbers.
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Offline robpmorrison

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #9 on: May 26, 2012, 12:05:56 PM »
It will be a bit before I can pull it apart today.  I will post what I find later.  Maybe I will make the cord so I can also fully test the motor as well.

Offline AJ

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #10 on: May 26, 2012, 12:18:56 PM »
The s/n for the dryer is 10632471QW.

I think it should have this motor in it then, part # 33002478
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Offline robpmorrison

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #11 on: May 29, 2012, 07:55:44 AM »
AJ,

Here is a follow up.

1. I was able to run the dryer a couple more times and then at one point when I pressed the start button I got the buzz to start it and then it stopped and I got a smell that something went.  Would that only be the starter on the motor or could it be something else.

2.  I pulled it all apart.  There really is not a lot to these dryers.  The fun part will be putting the belt back on the drum from what I can tell.  Attached is a picture of the motor.  The p/n on the motor is 63709530 and the model # is S58NXMPM-6852.  These are different than the part numbers you find anywhere else.  I am going to guess that the part # 33002478 is the correct one because of the flat spot on the shaft.  It is a 1/4 HP, 1 phase, 115 V, 60 Hz, 4.5 Amps, 1725 RPM, MFG date code is F99A5.  See the pictures.

3.  I used my digital multimeter to ohm out the switch on the motor.  The service manual says that between terminal 3 and 4 there should be 3 ohms and that between terminal 4 and 5 there should be 2.25 ohms.  I found the following:

Between 3 & 4, Motor shaft switch relaxed 3.1 ohms, with the motor shaft switch depressed 1.8 ohms

Between 4 & 5, Motor shaft switch relaxed 3.3 ohms, with the motor shaft switch depressed 1.8 ohms

Do these motors come with these switches mounted?  I looks like it by the pictures but I do want to make sure.

OK if you have any thoughts and can verify if possible that the 33002478 is the replacement motor for this dryer than I will order up a motor.

Also would you recommend that I replace the two wheels that the drum rides on in the back at this time.  I can see some of the rubber from them dropping and they look warn.  It has been over 12 years that this has been in use without any problems and there is no telling the amount of time that they have been rotating.  We are a family of 5 and the dryer has been used a whole lot over those years.

Would you recommend I replace anything else while I am at it?

Thanks

Rob

Offline AJ

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #12 on: May 29, 2012, 08:15:17 AM »
Quote
1. I was able to run the dryer a couple more times and then at one point when I pressed the start button I got the buzz to start it and then it stopped and I got a smell that something went.  Would that only be the starter on the motor or could it be something else.

Most likely the motor, I don't know what else it would be.

Quote
I am going to guess that the part # 33002478 is the correct one because of the flat spot on the shaft. 

Also going by the serial number you posted that should be the correct motor.

Quote
Do these motors come with these switches mounted?  I looks like it by the pictures but I do want to make sure.

Yes, the switch comes mounted to the motor.

Quote
OK if you have any thoughts and can verify if possible that the 33002478 is the replacement motor for this dryer than I will order up a motor.

Should be the one. Also keep in mind that if you order the motor from one of the links I posted above the return policy is excellent.
You have 365 days to return any part ordered through our site. Any part can be returned for any reason, even if it had already been installed.

Quote
Also would you recommend that I replace the two wheels that the drum rides on in the back at this time.  I can see some of the rubber from them dropping and they look warn.  It has been over 12 years that this has been in use without any problems and there is no telling the amount of time that they have been rotating.  We are a family of 5 and the dryer has been used a whole lot over those years.

Would you recommend I replace anything else while I am at it?

Would not be a bad idea to replace the two drum rollers.
Also look at the glides that the front of the drum ride on.
How does the belt look?
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Offline AJ

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #13 on: May 29, 2012, 08:21:20 AM »
Parts list for Maytag dryer model # MDE4000AYW



Maytag Dryer Drum Support Rollers Part # 12001541



Maytag Dryer Drum Belt Part # 33002535



Maytag Dryer Drum Tumbler Bearing Kit Part # 306508
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Offline robpmorrison

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Re: Maytag MDE4000AYW dryer will not rotate
« Reply #14 on: May 29, 2012, 08:56:40 AM »
AJ,

Thanks for the input.  here is a link to the photos for the rollers for the drum support plus the belt and the drum bearings and I also took a picture of the idler wheel.

you can find the pics here https://picasaweb.google.com/116078893095334358419/DryerRepair?authuser=0&feat=directlink

What is your opinion on these things?  The belt seems to be starting to see shreads on the edges.  The bearings look like they are worn to me.  The rollers are as I said in my original post having rubber dropping off of them which can be seen in the pictures as well.  I wonder also if the idler wheel should be replaced or is that pretty solid?

Thanks

Rob

 

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