Restore or buy new AC blower motor?

[Claus S.]

I have a factory AC car and have a little bearing noise coming from the blower motor.
I have searched the internet for restoring blower motor without finding any web sites regarding how to restore/change bearings for the motor

Is there any members here that know of how to restore or in my case change the bearings in the blower motor?

A new motor is not much but it is "made in China"

[Jim S.]

Re: Restore or buy new AC blower motor?

Claus,

Greg Thompson, at 913-681-8274, repairs them as well as atennas .

Jim

[Joe L.]

Re: Restore or buy new AC blower motor?

I have a factory AC car and have a little bearing noise coming from the blower motor.
I have searched the internet for restoring blower motor without finding any web sites regarding how to restore/change bearings for the motor

Is there any members here that know of how to restore or in my case change the bearings in the blower motor?

A new motor is not much but it is "made in China"

Claus-----

I've never attempted to rebuild one of these things. They appear to be quite well sealed by GM and pretty much spot-welded construction. However, there may be someone out there doing rebuilding of these things that's developed procedures. I can tell you that no internal parts for these were ever available from GM or Delco. So, while there may be parts "out there", it has never been from GM. I believe these motors are rather prominently "dated" so I suppose rebuilding would be far preferable if someone can do it for you. Hopefully, someone else will know of a source.

The last available motor assembly for your application available from GM was GM #22029905. I believe this assembly was of US or Canadian manufacture but it might have been Mexico. I think there is a replacement currently available from Delco (probably the Chinese one you referenced), but it's strictly an aftermarket-type piece, not OEM. You might still be able to find a 22029905 if you wish.

[Claus S.]

Re: Restore or buy new AC blower motor?

Thanks Joe. I just recived a new blower motor from LIC but i will not throw away my old motor.

I always take care of old parts that i may need in the future

[Stephen G.]

Re: Restore or buy new AC blower motor?

Claus,

I know this is an old post but I just rebuilt the motor from my 67 air car. Unfortunately I had it all re assembled before I remembered to take some pictures. It's very easy. My VERY noisy motor turned out to need just cleaning and grease.
If you break away the bead of sealer material around the flange you will see the 3 small welds holding it together. I used a Dremel with a cutoff wheel to break these welds. The top can now be removed. This will expose the brush sets which are held in by 4 small metal tags coming up thru the phenolic that is the platform for the brush holders.

Spread these and the brushes and assembly can be removed. Now the entire armature can pull out.

I needed to clean up everything and put some good grease on the bronze bushings and re assemble. (There are no bearings, just bronze bushings).

i just used a bead of epoxy to put it back together ( instead of re-welding ).

Works great!

Steve

[Claus S.]

Re: Restore or buy new AC blower motor?

This is great Steve Thanks you for posting pictures and telling me how to restore the AC blower motor

I suppose that the noise i can hear is no bearing noise at all then

Can i use copper grease? Or better yet what kind of grease did you use?

[Claus S.]

Re: Restore or buy new AC blower motor?

I have bought a new blower motor and fan but the fan is adjusted up and down on the blower motor axle with a set screw on the new blower motor so i wonder if i should use the
original fan from that i took off my factory AC car today?
There is no set screw on the blower motor axle on the original fan so that is a plus(not nice if the set screw gets loose and the fan starts hitting the fan housing)
The fan looks far from new but i can restore it
Any know the best way to clean the fan? I know somebody that have chrome shop so perhaps some kind of chemical bath?

Any ideas what is best to do

[Stephen G.]

Re: Restore or buy new AC blower motor?

Claus
I used a waterproof axel grease. It's what I use on my car trailer wheel bearings. I used it only because it was on the shelf. Anything should be OK.

[Stephen G.]

Re: Restore or buy new AC blower motor?

Claus

My original fan had balance weights on it so I just wire brushed off the surface rust and reinstalled as is.

Steve

[Claus S.]

Re: Restore or buy new AC blower motor?

Thanks for helping me out here Steve and Joe

I can not use the new fan because i can not tighten the nut that holds the fan enough/the fan will slide up and down a bit on the axle)
No problems with anything using the original fan The fan sits tight when the nut is screwed in

Steve. I have balance weights on the original fan as well( i saw it as soon as i took out the blower motor/fan)
I will try to wire brush the fan tomorrow I will also have a look at the original blower motor
There is no problem using the new blower motor since the original factory fan fits perfect on the new blower motor(not much impressed with the new fan though)
Steve. You mean using grease if i restore the blower motor?
I also got the original clips and screws for attaching the fan housing to the AC box
I think the clips and bolts looks pretty good when thinking they are from 1963 or older

[Joe L.]

Re: Restore or buy new AC blower motor?

I have bought a new blower motor and fan but the fan is adjusted up and down on the blower motor axle with a set screw on the new blower motor so i wonder if i should use the
original fan from that i took off my factory AC car today?
There is no set screw on the blower motor axle on the original fan so that is a plus(not nice if the set screw gets loose and the fan starts hitting the fan housing)
The fan looks far from new but i can restore it
Any know the best way to clean the fan? I know somebody that have chrome shop so perhaps some kind of chemical bath?

Any ideas what is best to do

Claus-----


If you torque the set screw properly AND use Lock-Tite on the threads you won't have any problems with it loosening. However, you MAY be able to re-use the original fan IF you're sure it's compatible with the shaft on the new motor.

[Claus S.]

Re: Restore or buy new AC blower motor?

Joe. The old fan fit perfect on the axle on the new blower motor(it will not spin on the axle)
The original fan must be a little bit longer than the new fan since i can tighten it just using the nut

[Claus S.]

Re: Restore or buy new AC blower motor?

Is the clip(see the tool pointed towards the clip on the picture)on the outer AC box meant to hold the copper lines from the expansion valve or the line from the evaporator that attaches to the STV valve?
It is not only the old fan that have balance weights but the new one had one balance weight as well(i will still use the old fan because there is no set screw on the old fan)

[Wayne M.]

Re: Restore or buy new AC blower motor?

Is the clip (see the tool pointed towards the clip on the picture) on the outer AC box meant to hold the copper lines from the expansion valve or the line from the evaporator that attaches to the STV valve? ....

Claus -- just the two small "copper" lines. My early '65 has no sign of these small diameter lines being copper; they look more like cad-plated steel. Also, they don't have any coils; they seem to be fabricated to exact length required.

See clip that holds these 2 lines in middle of pic below.

[Claus S.]

Re: Restore or buy new AC blower motor?

Thanks Wayne Both lines are to long on the expansion valve i bough from LIC so i made that coil so i would not have the lines all over the outer AC box

I have the old original expansion valve so perhaps i can use that? The lines looks thicker on the original one. I just have to clean it