3 Brush Generator

[cannondalerob]

I bought a NOS 3 brush generator for my 36 that was missing the pulley. I have purchased 4 pulleys over the past 6 months, and none of them will fit. I need a pulley with the fan mount. The Generator has an AA4 marking on it. What year is this for, and where can I find a pulley that will fit it?

[Randy]

What about the other 4 pulleys will not fit? It might help someone help you if you could post some pics of the generator, the pulleys that won't fit and describe why.

[Old Henry]

So, here's my shot in the dark.
Your generator is most likely an 81A-10000-A six volt 28 amp generator for 1932-39 90 and 100 hp engines. If so, you would need the 4.38" diameter pulley here: http://macsautoparts.com/early-v8-fo...0R3CHL1140607/

Or, if by chance it is a 40-10000-A for 33-35 it would need the smaller 4.08" diameter pulley here:

http://macsautoparts.com/early-v8-fo...0R3CHL1140543/

If you haven't tried either one of those pulleys I think I'd buy both, hope one fits, and send back any that doesn't.

Here's the generator chart I looked at to figure that out. You might figure out something different from it.



Here's the fan if you need one: http://www.ebay.com/itm/flathead-for...item3a6f492d8f

[rotorwrench]

Some fan mount pulleys were keyed and some were threaded. FoMoCo made replacement parts and so did outside aftermarket manufacturers. You really have to describe the generator shaft that you have well. Diameter, length of effective stub, keyed or not, threaded or not. There are a lot of different possibilities.

[Bruce Lancaster]

You don't say how they fail to fit, but pulleys 1932-36 uses pulleys with a substantially smaller hole than the '37-9 and later types.

[cannondalerob]

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Ok, I have pictures, but I don't know how to post them.It is a keyway shaft on the the generator. The shaft is a bigger diameter than any of the pulleys. The front of a gererator has a big nose like a late model, 2 brush. If anyone can tell me how to post pistures, i will.

[cannondalerob]

The shaft diameter of the pulleys is approximately 5/8 ". The diameter of the shaft on the generator is something bigger.

[jimvette59]

Look on ebay item #160722491654

[Old Henry]

Here are the instructions for posting a picture found here: https://www.fordbarn.com/forum/faq.ph...b3_attachments

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[JM 35 Sedan]

Originally Posted by cannondalerob

Ok, I have pictures, but I don't know how to post them.It is a keyway shaft on the the generator. The shaft is a bigger diameter than any of the pulleys. The front of a gererator has a big nose like a late model, 2 brush. If anyone can tell me how to post pistures, i will.

Somewhere on this website there is a section for frequently asked questions. There is supposedly something there on how to post pictures. You could also do a search for " posting pictures" or "picture posting". There have been many good threads explaining how to do this. It is very easy to do although many are apparently not willing to even try.

[David J]

Left is 34 , front is 33 & right came off a 39 motor I plucked out of a 33 . B-O-B had this same issue & he got the pulley off the big shaft one & it had the fan mount stuff on it .He's a good guy so a PM in his direction should cure the "what do I need bit " .

Originally Posted by Bruce Lancaster

You don't say how they fail to fit, but pulleys 1932-36 uses pulleys with a substantially smaller hole than the '37-9 and later types.

[David J]

Looks like a small shaft one jimvette59 refers to . Pics are from epay ad # 250980239733 & match what I have-had . Definately big shaft & definately NOT 34 .

Originally Posted by jimvette59

Look on ebay item #160722491654

[bbrocksr]

Originally Posted by Bruce Lancaster

You don't say how they fail to fit, but pulleys 1932-36 uses pulleys with a substantially smaller hole than the '37-9 and later types.

The 36 shaft size is .590 and the 37-39 and later shaft size is .668.
Bill

[cannondalerob]

The right one looks just like mine. Who is B-O-B?

[David J]

B-O-B is his username here . I think the pulley he got off the right generator was the same as the one in the pics I liberated offen epay . Barnfind08 { username here } may have these . He's got most evvathin else . Good luck .

Originally Posted by cannondalerob

The right one looks just like mine. Who is B-O-B?

[Old Henry]

Here are pictures of Rob's (canondalerob) generator in question that he emailed to me and I am posting for him. Hope it can help you in the know to help him.

[Randy]

Originally Posted by David J

Looks like a small shaft one jimvette59 refers to . Pics are from epay ad # 250980239733 & match what I have-had . Definately big shaft & definately NOT 34 .

David, Can you post or send me a picture of the back and maybe a side view, showing how tall the cooling vanes are? Thanks, Randy

[JM 35 Sedan]

I believe the pulley you need is the '39 standard pulley or a similar version was used on some 60 HP engines. I have some of these pulleys and some pictures of them filed in my computer but cannot post them from my smart phone.

[cannondalerob]

You would be willing to sell one or trade for what I have?

[David J]

Randy , The only one I had B-O-B got . The pics of the complete one were "liberated" offen epay . I'm pretty sure the one I used to have was the 81A- like the one in my last pics . Cannondalerob , I don't have another one to trade but methinkz there's plenty around . GOOD LUCK .

Originally Posted by Randy

David, Can you post or send me a picture of the back and maybe a side view, showing how tall the cooling vanes are? Thanks, Randy