battery question

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Jdaniel1986
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battery question

Postby Jdaniel1986 » Mon Aug 16, 2021 11:48 pm

1974 farmall club. Red to ground. How many cca do I need for the new battery?
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Eugene
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Re: battery question

Postby Eugene » Mon Aug 16, 2021 11:58 pm

Battery with the highest CCA that will fit in the battery box.

Ball park, 500 CCA or higher.
I have an excuse. CRS.
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Glen
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Re: battery question

Postby Glen » Tue Aug 17, 2021 12:37 am

Hi,
I guess you found that the Cub is a 1974.

Cubs made after mid 1964 came with 12 volt, negative ground systems.

Below is a page from the 1965 Cub operator's manual showing the 12 volt battery in the battery box. :)

http://farmallcub.com/rudi_cub/www.clea ... age-25.jpg
Last edited by Glen on Tue Aug 17, 2021 7:04 pm, edited 1 time in total.
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inairam
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Re: battery question

Postby inairam » Tue Aug 17, 2021 5:50 am

You are looking for a Group 26R battery to fit in the box.

I use awg 2 cable, like for the 6 volt cubs, on the 12v to have lower resistance. I also gound to the rear axle at the bottom of the box using a flat braid awg2 ground wire to get a better connection.
When you only have 9 horsepower you need to know the names of all of the ponies!
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Gary Dotson
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Re: battery question

Postby Gary Dotson » Tue Aug 17, 2021 6:16 am

Any group 26 or 26R battery you locate will have adequate CCA for your Cub. 12 volt Cubs are negative ground.
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Matt Kirsch
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Re: battery question

Postby Matt Kirsch » Tue Aug 24, 2021 11:45 am

Color of the cable is not relevant because there is no law or enforcement saying you have to use black for ground. Someone could have used a red cable.

Look at the post on the battery that the ground is connected to. It should be the "-" post, but if the tractor has a generator/regulator setup (IIRC they did not go to an alternator until 1975) it could be polarized to charge with a positive "+" ground.
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Cubfriend
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Re: battery question

Postby Cubfriend » Tue Aug 24, 2021 2:05 pm

Matt has a very good point. I was going to mention it if he didn’t. Check the markings on the battery to determine if the negative is actually going to ground. Don’t go by cable color. You wouldn’t be the first to be fooled by the color of the cable.
Frank
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