No throttle control of 48 Super A

Farmall Super A, AV, 100, 130, & 140 1939 - 1973

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Charlize
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Joined: Fri May 08, 2020 8:35 am
Zip Code: 08525
Tractors Owned: 56 Cub
48 Super A
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No throttle control of 48 Super A

Postby Charlize » Mon May 25, 2020 1:33 pm

When i purchased our '48 super A the seller said the carburetor needs rebuilding and that was why it ran constantly at full throttle only. I just got finished cleaning and checking on the carburetor and everything seemed fine (but now it's tidy). as i put things back together i realized that the throttle simply did not control the valve on the carburetor. Somewhere in the governor something may be broken or worn. Is that a repairable problem? It must be a problem there as i can manipulate all the exterior parts and they seem to be fine if oddly disconnected in that area.
Just curious before i start to dismantle things and find no solution. I could always try to jury rig a spring on the exterior but....

Thank you,

Charlize

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Tractors Owned: 1949 Cub "The Paperweight"
Cub powered IH 52R combine
Grandfather's 1948 Super A
White demo Super A-"Ol Whitey"
1950 Super A "Old Ugly"
1954 Super A-1
856
Buncha other junk
Circle of Safety: Y
Location: NC, Jacksonville area

Re: No throttle control of 48 Super A

Postby Super A » Mon May 25, 2020 9:32 pm

First thought is broken governor spring.

Al
White Demo Super A Restoration Updates

Let us pray for farmers and all who prepare the soil for planting, that the seeds they sow may lead to a bountiful harvest.
"It ain't a !@*% A. It's a SUPER A!"

Gary Dotson
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Re: No throttle control of 48 Super A

Postby Gary Dotson » Tue May 26, 2020 7:31 am

It would seem that if the governor spring were broken, the engine would run only at idle. I would carefully check out all linkage components, looking for sticking, binding or miss-adjustments. You mention a disconnect! Maybe you're more right than you realize. You may have an issue with the governor but check all the other stuff first.

Jim Becker
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Re: No throttle control of 48 Super A

Postby Jim Becker » Tue May 26, 2020 11:12 am

Depending on how literally "full throttle" is to be taken, the previous owner may have screwed the carburetor's idle speed adjustment in to raise the engine speed after the governor spring broke.

Charlize
Posts: 7
Joined: Fri May 08, 2020 8:35 am
Zip Code: 08525
Tractors Owned: 56 Cub
48 Super A
2 newer JD diesels
Location: near Princeton NJ

Re: No throttle control of 48 Super A

Postby Charlize » Wed May 27, 2020 8:57 am

Well somehow after trying to get the radiator off without success it seems to have solved itself. hoping to put the sickle bar to work today in the sugar maple plantation. Witchcraft at work or.....

Thanks for the help

Jim Becker
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Re: No throttle control of 48 Super A

Postby Jim Becker » Wed May 27, 2020 10:00 pm

That brings you back to Gary's suggestion -- sticking, binding or miss-adjustments. It may unsolve itself again.

Charlize
Posts: 7
Joined: Fri May 08, 2020 8:35 am
Zip Code: 08525
Tractors Owned: 56 Cub
48 Super A
2 newer JD diesels
Location: near Princeton NJ

Re: No throttle control of 48 Super A

Postby Charlize » Wed Jun 10, 2020 9:55 pm

I had tried to remove the radiator but couldn’t free the lower edge. I’ve run her a couple of days with the sickle bar working well(I’m learning)

User avatar
Super A
10+ Years
10+ Years
Posts: 5050
Joined: Mon Jan 26, 2004 10:53 am
Zip Code: 28521
Tractors Owned: 1949 Cub "The Paperweight"
Cub powered IH 52R combine
Grandfather's 1948 Super A
White demo Super A-"Ol Whitey"
1950 Super A "Old Ugly"
1954 Super A-1
856
Buncha other junk
Circle of Safety: Y
Location: NC, Jacksonville area

Re: No throttle control of 48 Super A

Postby Super A » Thu Jun 11, 2020 7:53 am

Charlize wrote:I had tried to remove the radiator but couldn’t free the lower edge. I’ve run her a couple of days with the sickle bar working well(I’m learning)


Why are you trying to remove the radiator? If for the governor you can access it without removing the radiator.

Al
White Demo Super A Restoration Updates

Let us pray for farmers and all who prepare the soil for planting, that the seeds they sow may lead to a bountiful harvest.
"It ain't a !@*% A. It's a SUPER A!"


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