Other than removing the center nut holding the fan blades, is there any way to get inside this blower motor to repair or lubricate this motor from my 1971, or are these motors factory sealed?

It whines & squeals inside when it's run at medium-high speeds. I'd hate to replace the blower motor with another good used one (presuming I can find one), but I may be forced to if I cannot fix this.

Has anyone had success on these?

Thanks,
Ken

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I'd bet it's rebuild-able. My guess is a bearing.

Yeah, that's my guess, too...the hard part is getting inside, and try to lubricate, but I'm willing to try....just need a lil guidance.

Guessing maybe an alternator shop would be able to do something with it.

Electric motor repair shop.

You can get in them fairly easily. Pull the fan off. Under that should be two screws. Those two screws are holding the two tabs that you see sticking outside of the motor body (one is showing in your second pic, right near the wiring coming from the motor). Once the screws are out the whole back shell/cover of the motor comes off.

The bearing in the cover is tough to get out because it’s pressed into the end of the motor cover. The one in the main part of the body is easier.

I think when I did mine a few years ago, after getting it tore apart, I just stood it upright, and put some oil around the bearing, and let it soak in.

<sorry, replied to wrong post>

There is/was a free one in the classifieds.

So, I took the heater blower apart last night. Quite easy getting in there, but what an ugly mess inside! After some consideration (and a beer), I decided not to fuch with it any more, because I really don't know if I'd fix it correctly....and, I might really fuch it up!

So, at the good advice of some members here, this afternoon I took the motor to a local electric motor repair shop, in my case called Palo Alto Electric Motor Corporation. I think that was the right move, as they'll do a complete degrease cleaning, and shaft lubrication, and repaint the silver base & black housing for just one hour $140 labor charge. And, if I want to, they'll replace both sides worn brushes for about another $60. Ya know, I'm good on that. Whole lot quicker & easier for me...lol. If any of you guys are interested in getting your old & squeaky heater blower repaired , they're at (650) 493.5585

Regardless, thanks to all who chimed in here....


For grins, here is the base with the fan removed. Just pull the two retaining rings, and remove a couple bolts & screws, and it's apart....and, dirty as hell since 1971.


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Cheers,
Ken

Wow that’s dirty! I think you made the right call!

That is not so bad. Really! Moisture has gotten in and did a little corrosion. Wire / sand off the obvious crud. Clean out the inside of the housing. Oil the bearings and reassemble. I doubt the bearing is even worn Your problem looks like age and some crud. Use a light oil and not WD40