'47 farmall A Manifold and Pedal Springs

Farmall Super A, AV, 100, 130, & 140 1939 - 1973
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Petermac7644
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Tractors Owned: 1947 Farmall A
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Location: New Brunswick

'47 farmall A Manifold and Pedal Springs

Postby Petermac7644 » Tue Nov 29, 2022 8:42 am

Hi,

I recently replaced the manifold on my A.

I installed the manifold, and the tractor wouldn't start. It ran with the old manifold despite the giant crack in the casting. I suppose all the corrosion, rust and crud in there kept it sealed enough for the tractor to run.

The new unit came with holes in the casting. The original had holes on the intake side but with some kind of pin in there. This new one came with the pin holes and also some threaded holes on the exhaust side.

I put a little duct tape over the holes in the new manifold and sure enough it fired up and ran like a champ - much stronger than with the old part... so now I wonder what do I use to plug those holes other than duct tape? Can anyone tell me what size/thread type for the exhaust side and what sort of pins I need for the intake side??

In other news... one of the brake pedal return springs broke on me. I can't seem to find a proper OEM replacement. Has anyone had luck with a generic spring? what did you use?

Thanks,

Peter

Jim Becker
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Re: '47 farmall A Manifold and Pedal Springs

Postby Jim Becker » Tue Nov 29, 2022 10:09 am

The manifolds I am familiar with have 1 threaded hole in the intake side and a pair or (very small) holes that are often plugged with pins in the exhaust side. You have pictures of yours?

Make sure you have the governor to carburetor link properly adjusted with the new manifold.

Steiners and All States Ag Parts both have a replacement return spring. There may be other sources.
https://www.steinertractor.com/IHS701-B ... urn-Spring
https://www.tractorpartsasap.com/brake- ... 25754.html

Eugene
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Re: '47 farmall A Manifold and Pedal Springs

Postby Eugene » Tue Nov 29, 2022 12:27 pm

Pipe plug in the threaded hole. Other two holes leave open.

The threaded hole in the intake is for (vacuum) operating a cow milking machine.
I have an excuse. CRS.

lolbell
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Re: '47 farmall A Manifold and Pedal Springs

Postby lolbell » Tue Nov 29, 2022 4:05 pm

Eugene wrote:Pipe plug in the threaded hole. Other two holes leave open.

The threaded hole in the intake is for (vacuum) operating a cow milking machine.


I just took the manifold off of a 1976 140 to have it resurfaced and installed new gaskets. There were two holes in the middle tube. I tapped them and plugged with stainless steel bolts. Did I do wrong? Do I need to take them out ?

Petermac7644
Posts: 22
Joined: Sun Dec 27, 2020 7:45 pm
Zip Code: E6L
Tractors Owned: 1947 Farmall A
Circle of Safety: Y
Location: New Brunswick

Re: '47 farmall A Manifold and Pedal Springs

Postby Petermac7644 » Fri Dec 02, 2022 7:38 pm

Thanks the pipe plugs are going to work. This manifold has three of the threaded holes. The old manifold just had one and I didn’t realize that’s where the vacuum for a milker is. Interesting. I guess those pinholes are for water to run out the exhaust side.

Those springs are too pricey to ship to Canada unfortunately

Petermac7644
Posts: 22
Joined: Sun Dec 27, 2020 7:45 pm
Zip Code: E6L
Tractors Owned: 1947 Farmall A
Circle of Safety: Y
Location: New Brunswick

Re: '47 farmall A Manifold and Pedal Springs

Postby Petermac7644 » Fri Dec 02, 2022 8:37 pm

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SamsFarm
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Re: '47 farmall A Manifold and Pedal Springs

Postby SamsFarm » Sat Dec 03, 2022 12:09 pm

:)
I do the cardboard drip catcher too!
1968 Cub Fast-Hitch

Petermac7644
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Tractors Owned: 1947 Farmall A
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Location: New Brunswick

Re: '47 farmall A Manifold and Pedal Springs

Postby Petermac7644 » Sat Dec 03, 2022 3:14 pm

Haha because of the drips the ol’ tractor is kept in fresh fluid

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Re: '47 farmall A Manifold and Pedal Springs

Postby Dh2jr » Tue Dec 13, 2022 5:33 am

For the brake springs I went to ace hardware and found 1 about 3 inches to long cut it and bent a new end on it. Thinking is cost me about $3. And 5 minutes
53 Super A


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