Repair a Dayton Fan Motor?

Kraftwerk · 01:47 PM

Wondering what to check first on this 1/4 hp 115 volts 4 Amps motor which has stopped running?
...or failing that, where to find a replacement.
Doesn't have to be exact replacement, any fan motor will do.
This one is Model S6ODLZ-4566 and it is probably more than I need power-wise 1725/1140 rpm its a nice old split phase A.C. Motor

cabmandone · cabmandone's Garage

That's a little vague. Does it have a capacitor? That's the first thing to check. What is it on? And "Dayton Fan motor" isn't going to help. Model/Serial and voltage would be REALLY handy.

Kraftwerk · 01:59 PM

All that info is on the tag, but I cannot attach a photo r/n. I don't think there is a capacitor.. maybe that is why it gave up the ghost>?
1/4 hp 115 volts 4 Amps motor
Model S6ODLZ-4566
Mnf. # E6916

Good point though: Capacitor's are always the weakest link in electronics, will open it up and see if there is one in there.

Shifter · 08-18-2021, 02:47 PM

Does it have power?

If you turn it on and give it a spin, does it start? If yes, then capacitor.

How do the brushes look?

If good, then bushings or bearings.

Eric Hahl · Eric Hahl's Garage

Brushes are the first culprit.

mattdavis11 · 08-18-2021, 03:25 PM

Grainger should have what you need if you have to replace. I'm sure there are a million other places too.

cabmandone · cabmandone's Garage

Pretty much any 1/4 hp 115v motor with a matching body, shaft size and rotation should be fine. What is it on? I did a search using the model you provided but didn't come up with any hits that included the model number.

Kraftwerk · 08-18-2021, 07:18 PM

Will open the motor tomorrow by daylight. It is bolted to a frame and is a exhaust window fan. Really moves the air.. or used to move the air.

GH85Carrera · GH85Carrera's Garage

The real determining factor is how old is it? If it is from the 1970s or 1980s or before, it may well be worth taking apart and fixing. The made motors with quality in mind. If is is Chinese made modern motor, don't bother to try, just replace it.

We used to use a local motor rewind and rebuild service. It is cool how big and varied the old American made quality motors were. Then the cheap crap took over, and it is made of such crappy internals it is not worth fixing.

nota · 08-19-2021, 06:23 AM

Quote:

Originally Posted by Shifter

Does it have power?

If you turn it on and give it a spin, does it start? If yes, then capacitor.

How do the brushes look?

If good, then bushings or bearings.

no bushes in an AC fan motor

Zeke · 08-19-2021, 07:40 AM

Quote:

Originally Posted by nota

no bushes in an AC fan motor

It would be very unlikely unless this is a belt driven fan. Direct drive almost certainly an induction motor. They do wear out and windings burn when the bearings start to fail due to load and overheating. A 1/4 HP is cheap, but not at Grainger.

DerkPerk · 08-19-2021, 07:40 AM

Quote:

Originally Posted by mattdavis11

Grainger should have what you need if you have to replace. I'm sure there are a million other places too.

Grainger reps Dayton motors. They will have a replacement. I couldn’t get either number you gave to come up in their system. Recheck that 5 digit MFG number.

Sent from my iPhone using Tapatalk

Zeke · 11:01 AM

Replace the O with a 0 (zero) and you will find it. Well, maybe all I found was another typo.

Kraftwerk · 06:02 PM

MFG. #. E68T7
correction: it's a " T " not a 1...

The motor looks to be at least 30 years old and USA built.
If I can't repair this motor, I suppose ANY fan-motor will work.

GH85Carrera · GH85Carrera's Garage

We have a local motor repair place, Southwest Industrial motors here in Oklahoma City. If the motor is just a 1/4 HP it is likely not worth rebuilding it. Just get a replacement. If nothing else, call a motor repair facility near you and ask tell them the part number of the motor. They will know if it is something that was made in a way that rebuild is practical. Most small motors like your use bushings, and not bearings or machine fitted press fit parts and rebuilding is not practical.

And you can only upload JPG files. If your image is a png, just rename it. No conversion needed, just change the PNG to JPG and upload that.

dad911 · 08-20-2021, 07:21 AM

I'd try to replace it with a matching motor from surplus center or ebay.

Kraftwerk · 07:35 PM

Just to follow up. The motor is fixed and running perfectly. I thought I should tell you what I discovered (so many threads here trail off and you never know what the heck happened, right?) I took the fan to the work bench opened it up. Right away, it seemed like it could use a good cleaning some dust was in there and some grease and some greasy-dust. It is a fairly simply thing to dissect and very well engineered. No plastic, logically constructed, probably 30 years old or more and made in USA. So, worth fixing. I worked at it for six hours at my work bench in 90 heat. One thing which seemed suspect was the centrifugal switch (Turns out there are no capacitors) This thing has a self regulating motor, so when the switch spins 800 rpms it turns the motor onto full running speed and shuts the switch off. Genius. Very durable design. So I cleaned the switch, it was a bit gummed up which took effort and delayed the turn-on. Much better now. After I had cleaned everything I began to put it all back together and found the REAL problem: a bit of wire to the core had lost its insulation and was grounding out on the motor body. Duh, so simple. Easy fix: cut the wire, re-twisted the wire together after slipping on heat-shrink to cover the whole thing. Motor works well is as quiet as ever spins the fan blade with out issue. Glad I didn't spring for that $75. (or $230!) Chinese crap, This Ohio- built product will run awhile I think. Thank you for all your ideas and input. Moral of the story: if it was made in USA, you might get lucky. All it cost was my time.

(ps. sorry not to post photos my Apple product is pissed off at me since I recently reached a 'fully loaded cloud capacity'. A problem for another day)

A930Rocket · 08-24-2021, 05:41 PM

Thanks for the follow up and what you did to fix it!

Kraftwerk · 08-24-2021, 07:38 PM

In retrospect it was super easy, thankfully. Now that i know how to disassemble, a clean and re-grease would take an hour.

GH85Carrera · GH85Carrera's Garage

Isn't it nice to have a piece of equipment that was made to last, and be repaired when necessary.

Back in the "good ol days" Little Giant pump company was headquartered about 1/2 mile from house. We had a few of their pumps on our processors that ran 10 hours per day 5 days a week. If a pump failed I could walk in the service counter and they would write it up, and I could come back later that day and pick it up, all refurburished no charge as part of the lifetime guarantee. They were bought and all production moved to China and now the pumps are just crap and to avoided.