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417.29042992 Kenmore front loader motor issues

Tadman58

Premium Member
Joined
Mar 24, 2020
Messages
3
Location
West Winfield, NY
Model Number
417.29042992
Brand
Sears Kenmore
Age
More than 10 years
So I have a 417.24042992 front loader. This all started when I noticed it wasn't spinning all the water out of the clothes. It should be noted that I replaced the timer a couple of years ago. After some testing, I thought the motor control board was bad and replaced it; no change. Further testing showed the motor windings, Tacho & motor protector were all in spec.

While running it empty, I noticed that it only turns CCW, never CW; which the schematics & test sheet indicate that it should. Also, it always appears to want to rotate the drum fast; even in agitate mode. Since the schematics appear to show that the timer is the only controlling factor for rotation direction, I bit the bullet & got another timer; no change. I'm at a loss at this point. Any ideas would be greatly appreciated!!
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
106,292
Location
McMullen Valley, Arizona
Hi,

The motor is bad, that's all it can be at this point.

Look here:

Here's the motor for your model you can order:
131722800 Main Motor Assembly


Jake
 

Tadman58

Premium Member
Joined
Mar 24, 2020
Messages
3
Location
West Winfield, NY
Hi Jake,
Thanks for replying!! I was thinking that the motor was bad early on, but I'm not sure how a bad motor could make it rotate in only one direction all the time. Doesn't the timer decide which direction to turn?
 

Tadman58

Premium Member
Joined
Mar 24, 2020
Messages
3
Location
West Winfield, NY
Jake,
I got it fixed!!! At least temporarily. I disassembled the motor to see what might be wrong. I'm not sure how familiar you are with sensors, but the Tach sensor is nothing but a ring magnet on the shaft, inside a stationary coil of wire. So when the unit spins, it generates electricity. I assume the speed control is just based on what kind of voltage the tach line sends back. Well the ring magnet was split in two pcs. They came off the center hub they were bonded to and just stuck to the steel frame holding the coil.

Since the magnet now didn't spin, there was no signal back to the control board. So it just maxed out every time the motor fired up. Must be a limiter in the control board that automatically shuts the motor down above a certain amperage as it would run for about 2-3 seconds and shut off. I cleaned everything up and rebonded the ring magnet back together and to the central hub using super glue on the ends of the magnet pcs and an acrylic bonder on the central hub. Before reassembly, I cleaned all electrical contacts with emery cloth and put some anti-corrosion paste on all connections.

When I put the unit back together, I tried running it dry at the beginning of regular wash and it ran fine, so I tested it in final spin mode and it ran fine there as well. I'm not sure how long the repair will hold, but at least I know what happened & can order a motor if I have to. Just an FYI- the ring magnet can only be replaced with a new one by using a puller to remove the end bearing, so I'm not sure it's worth trying to rebuild the motor. Not even sure if rebuild parts are available for a unit this old.

Thanks again for your help on this problem!! Sorry for the long post, but I thought it might help others running into a similar issue.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
106,292
Location
McMullen Valley, Arizona
Excellent, good job. (y)

Yes, that is ONLY a temporarily fix, you will need to order and replace the motor to fix it permanently.:)

Thanks for the update!

Jake
 
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