Transmission oil

Farmall C, Super C Tractors, 200 & 230 1948-1958
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Cstrock
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Transmission oil

Postby Cstrock » Mon Aug 17, 2020 3:47 pm

I went to drain and change my transmission oil today On my super C and found no plug underneath. Anyone know what size bolt or where I can buy one.

Also there’s tons of debates on what oil for trans. Anyone got a simple answer that works. I live in South Carolina so it’s not cold. Any ideas

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Bill Hudson
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Re: Transmission oil

Postby Bill Hudson » Mon Aug 17, 2020 5:03 pm

A Super C does not have a sophisticated transmission and 90 weight transmission oil will work just fine. That is a quick simple answer that works.

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Don McCombs
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Re: Transmission oil

Postby Don McCombs » Mon Aug 17, 2020 5:26 pm

Straight 90w gear oil can sometimes be hard to find. But, Tractor Supply has it. They call it Ford Tractor Transmission Fluid.
Last edited by Don McCombs on Tue Aug 18, 2020 3:43 pm, edited 1 time in total.
Don McCombs
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Cstrock
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Re: Transmission oil

Postby Cstrock » Mon Aug 17, 2020 6:05 pm

Thanks. Any clue about the plug?

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Bill Hudson
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Re: Transmission oil

Postby Bill Hudson » Mon Aug 17, 2020 7:23 pm

It has been a long time since I drained the transmission in the only Super C that I have worked on and I don't recall where the drain plug was located. However, I do recall draining out a LOT of oil/water mixture and needing 5 GALLONS of oil to bring it up to the full mark, a plug on the side of the transmission. A quick google search confirmed the five gallons.

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Don McCombs
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Re: Transmission oil

Postby Don McCombs » Mon Aug 17, 2020 9:52 pm

The transmission drain plug is located at the very lowest point in the transmission case. Clean the area well and I'm sure you'll find it. It may be covered with grease, grim and dirt.
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Cstrock
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Re: Transmission oil

Postby Cstrock » Tue Aug 18, 2020 1:29 pm

Yea I know where the hole is but any clue where to buy a new plug itself. The “bolt” is missing completely

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Re: Transmission oil

Postby Jim Becker » Tue Aug 18, 2020 2:09 pm

I'm fairly sure it is a common pipe plug. (The other possibility is a straight threaded plug that seals against a machined surface, like many modern auto drain plugs.)

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Don McCombs
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Re: Transmission oil

Postby Don McCombs » Tue Aug 18, 2020 3:33 pm

There are two pipe plugs listed in the SC Parts Catalog for the transmission case. One 3/4” and one 1/4 inch. My educated guess is the 3/4 is the drain plug and the 1/4 is the fill level plug.
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Cstrock
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Re: Transmission oil

Postby Cstrock » Tue Aug 18, 2020 6:25 pm

U got a website for that. I can’t find it

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Don McCombs
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1948 Farmall Super A
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Location: MD, Deep Creek Lake

Re: Transmission oil

Postby Don McCombs » Tue Aug 18, 2020 9:57 pm

No web site. It's a publication from International Harvester. TC-44B.
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Gary Dotson
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Re: Transmission oil

Postby Gary Dotson » Wed Aug 19, 2020 7:04 am

Just go the your local hardware store and pick up a 3/4" pipe plug screw it in place.


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