1961 Blower Motor Fan

[Tom E.]

[Dan D.]

Re: 1961 Blower Motor Fan

Tom, the fan is a squirrel cage. Don't know about a C2. but probably is quite similar. Have you tried some of the vendors that advertise in the Driveline? Some of them have parts from parts-out cars.

-Dan-

[Tom E.]

[Joe L.]

Re: 1961 Blower Motor Fan

Helping my cousin on his 61 heater motor and fan. Both were missing when he bought the car. A replacement motor is available at all of the usual vendors but the mounting plate and cage fan are unobtanium! Nothing on eBay etc. I found a thread from Mr Mozzetta on rebuilding a C1 fan assembly but that restoration involved all of the original parts. Not much else on the board here.

- As I don’t have the original to measure can someone provide the diameter of the original fan.
- Will the fan from a C2 blower work?

Appreciate any advice or direction, thanks Tom

Tom----


The plate was GM #3136457 and was unique to Corvettes. It was discontinued without supersession in December, 1968. Here's a used example:

https://www.ebay.com/itm/Heater-Blower-Motor-Mount-Plate-Original-58-62-Corvette/122980131183?epid=672076338&hash=item1ca22fe16f:g:pOIAAOSwDkVajc9Z

The fan was originally GM #3136457 and was used on a few other not-too-common Chevrolet applications. It was discontinued in February, 1973 and replaced by GM #3141370. The later was discontinued and replaced by GM #3030747 in December, 1974. The latter was finally discontinued without supersession in October, 1986. These fans had some other applications but not for any 63+ Corvette.

[Tom E.]

Re: 1961 Blower Motor Fan

Thanks Joe,
Appreciate the data, that may help narrow down and locate a replacement. As always, appreciate your detailed and informative responses.
Thanks Tom

[Terry D.]

Re: 1961 Blower Motor Fan

Dans idea about used parts vendors in the driveline is probably your best bet. You could also check out the Corvette Forum parts section.

[Tom E.]

Re: 1961 Blower Motor Fan

Thanks to Joe we snagged the motor plate off of eBay and ordered a replacement motor. Now all we need is the fan cage. Carlisle is in a few weeks, will give that a try and if no success will start with some of the driveline ads suggested.
would still like to know height and diameter of the original fan cage. Suspect it is very close to a C2.
Thanks Tom

[Joseph S.]

Re: 1961 Blower Motor Fan

Tom, Send me a private message. I should have a couple heater assemblies.

Joe

[Richard M.]

Re: 1961 Blower Motor Fan

Tom----


The plate was GM #3136457 and was unique to Corvettes. It was discontinued without supersession in December, 1968. Here's a used example:

https://www.ebay.com/itm/Heater-Blower-Motor-Mount-Plate-Original-58-62-Corvette/122980131183?epid=672076338&hash=item1ca22fe16f:g:pOIAAOSwDkVajc9Z

The fan was originally GM #3136457 and was used on a few other not-too-common Chevrolet applications. It was discontinued in February, 1973 and replaced by GM #3141370. The later was discontinued and replaced by GM #3030747 in December, 1974. The latter was finally discontinued without supersession in October, 1986. These fans had some other applications but not for any 63+ Corvette.

Joe, I think you may have made a typo there as the fan being #3136457. I was checking the fan part# but came up with 3132916. Ref HERE.

Also lists some PASS car and some Truck applications.

3132916.jpg
The fans are obviously very difficult to find and they are not reproduced. However based on the above applications there may be some still around in old car and truck junk yards.

One important issue with these fans is that the shaft hub is made of pot metal. Be very careful when removing a seized fan from the motor shaft. If too much heat is applied to the pot metal hub, it will melt.

Also, in the refinishing process, scribe marks on the fins where any balance weight clips are attached so they can be reinstalled in the same place.

Rich

P3130021.jpg

P3130022.jpg

P3130023.jpg

[Joe L.]

Re: 1961 Blower Motor Fan

Joe, I think you may have made a typo there as the fan being #3136457. I was checking the fan part# but came up with 3132916. Ref HERE.

Also lists some PASS car and some Truck applications.

[ATTACH=CONFIG]100346[/ATTACH]
The fans are obviously very difficult to find and they are not reproduced. However based on the above applications there may be some still around in old car and truck junk yards.

One important issue with these fans is that the shaft hub is made of pot metal. Be very careful when removing a seized fan from the motor shaft. If too much heat is applied to the pot metal hub, it will melt.

Also, in the refinishing process, scribe marks on the fins where any balance weight clips are attached so they can be reinstalled in the same place.

Rich

[ATTACH=CONFIG]100347[/ATTACH]

[ATTACH=CONFIG]100348[/ATTACH]

[ATTACH=CONFIG]100349[/ATTACH]

Rich------


Yes, I did. I repeated the plate assembly part number as that for the fan ( two completely different parts cannot have the same part number). The fan part number is GM #3132916. However, the remainder of the supersession history I posted as to part numbers and dates is correct for the 3132916 fan.

[Tom E.]

Re: 1961 Blower Motor Fan

Joe, I think you may have made a typo there as the fan being #3136457. I was checking the fan part# but came up with 3132916. Ref HERE.

Also lists some PASS car and some Truck applications.

[ATTACH=CONFIG]100346[/ATTACH]
The fans are obviously very difficult to find and they are not reproduced. However based on the above applications there may be some still around in old car and truck junk yards.

One important issue with these fans is that the shaft hub is made of pot metal. Be very careful when removing a seized fan from the motor shaft. If too much heat is applied to the pot metal hub, it will melt.

Also, in the refinishing process, scribe marks on the fins where any balance weight clips are attached so they can be reinstalled in the same place.

Rich

[ATTACH=CONFIG]100347[/ATTACH]

[ATTACH=CONFIG]100348[/ATTACH]

[ATTACH=CONFIG]100349[/ATTACH]

[Frank C.]

Re: 1961 Blower Motor Fan

Rich, I've attached a pic of my (probably original) 1957 blower fan. There's no pal nut or anything else holding it on that I can see. My fan will turn by hand but obviously needs lube. That and my need for refinishing is why I want to get the fan off. I read your blower motor rebuild and you don't mention the fan removal but here you do mention caution with IMG_0038.jpgthe pot metal hub. On mine the fan hub is flush with the end of the motor arbor. Any suggestions on how I can get it off? BTW I replaced my windshield with the confidence I got from your DIY article. I also used your article on lock rod clarity. Those restoration documents from you and others are very useful. Thanks Frank

[Richard M.]

Re: 1961 Blower Motor Fan

Frank, I can't be sure, but isn't there a setscrew in the hub to lock it to the shaft?

Definitely no heat on the hub, it will melt. If anything I'd try CRC Freeze-Off on the shaft to shrink it.

It might take some tapping of the shaft with a blunt drift to get the hub to budge.

Rich

[Richard M.]

Re: 1961 Blower Motor Fan

Frank,

I forgot I had a 58-62 blower housing on a shelf. Photos below. Yes there is a round push clip over the shaft to hold it in. No setscrew.
0530220854_resized.jpg0530220855_resized.jpg0530220855a_resized.jpg0530220856_resized.jpg

I decided to take it apart. After prying the clip off, some wire brushing, and a little penetrant, a little tapping with a drift on the shaft, it came loose.
0530221109_resized.jpg0530221109a_resized.jpg0530221109_Burst01_resized.jpg

[Frank C.]

Re: 1961 Blower Motor Fan

Thank you Rich. Knowing how it goes together makes it easier to get it apart without damage.