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Allis Chalmers Discussion Forum

Allis 39 B kill switch

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08-31-2007 18:03:00

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Hey guy's I have an ac 39 b hand crank. where do you put kill switch. also what kind of hose clamps did they use. Thanks DS

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09-02-2007 06:49:46

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 Re: Allis 39 B kill switch in reply to DS Mi, 08-31-2007 18:03:00  
Thanks again, this is a neat old b. I though about acid treating the rust and clear coating the tractor. I have painted some tractors and they look really good but this one is in great original shape. Anybody tried that approach? I wood like to treat rust and original paint and clear coat to shine. This might be harder than a good paint job. I've seen it on old trucks it is cool. thanks DSmi

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Jerry Coulter

09-01-2007 09:46:11

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 Re: Allis 39 B kill switch in reply to DS Mi, 08-31-2007 18:03:00  
The kill switch is on the side of the magneto, a little flat springy thingy.

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08-31-2007 19:00:04

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 Re: Allis 39 B kill switch in reply to DS Mi, 08-31-2007 18:03:00  
there wasn't any kill switch on the 39. you set up your throttle linkage so that when you pull back all the way it kills the engine.
the hole clamps were the twin wire type with the 10-24 threaded stove bolt. Bob

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09-01-2007 15:06:49

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 Yup! and they looked like this. in reply to chalmersbob, 08-31-2007 19:00:04  
third party image

Here's a picture of those early hose clamps.

My first production '38 B has a springy thingy kill device mounted on the side of the original... get this... Wyco mag.

I did a lot of research on this because Fairbanks Morse was contracted for OEM magnetos on the AC's. Trouble was during that first production year, FM wasn't machined up to meet the demand and many AC's were second sourced with Wyco mags from the factory. Because Wyco had been supplying JD's for so long, they figured out the springy thingy kill switch before FM got around to it.

Neat history around these old girls.

Another item for confusion is the "correct" color of the wheels. It turns out for very similar reasons that AC got wheels from several manufacturers and they came in many different colors. Black, Silver, Persian Orange and even Green! The tractors were all Persian Orange but they didn't seem to put much concern over the wheel color.

I guess you could paint them purple to make a point. At least there would be total agreement from the correct police that purple wheels was the wrong color.

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