Battery cable rounting - 12v Square front Cub

[PFord]

Hi,
The 12 volt system battery ground strap originally went to the left rear bolt holding the battery box on the housing, it looks like in the pic in the 1965 Cub and LoBoy operator's manual.

Below is the page.

http://farmallcub.com/rudi_cub/www.clea ... age-25.jpg

The battery can't sit on the ground strap at all at the rear, it could wear through the battery case.
They have said on here that the original ground strap is made so it can go under the battery in the space that there is.

The battery it originally uses has the posts on the left side, with the positive post at the front.

The positive cable goes out the hole in the battery box shown in the pic, and then down under the platform, and forward.

Below is a pic of the cable at the battery box.
The 12 volt Cubs have no nut and bolt at the battery box hole to the front of the cable hole.
That is where the 6 volt system ground cable connects on the battery box.
The hole is just open on the 12 volt system, I think. You can look on your Cub, and see if there is a hole there.

Below is a page from the same manual showing the 12 volt electrical system in the upper pic on the page. You can see how the battery cable is connected at the starter.
Disregard the 6 volt battery pic on the page. The manual is made for 6 volt and 12 volt Cubs and LoBoys.

http://farmallcub.com/rudi_cub/www.clea ... age-26.jpg

Thank you. That clears up another question I had.

From the looks of things, my battery is in backwards. Although the positive terminal is at the front, it's on the right side of the tractor. Therefore the positive cable is too short. And it won't let the battery sit rearward far enough to fit into the box. I intend to build new cables anyway.

So I'll Turn the battery around, face the positive toward the back of the tractor, let the ground cable come under the battery (it's the stockish flat type) and come up the front of the battery onto the ground terminal, and let the positive come through the hole to the positive terminal. That positive wire may be too short to reach anyway, but I need to make up a new one anyway as this one is old, hard, and inflexible.

I'll add this to the work list for next month. I'm out of money for this month!

[Don McCombs]

What number is your battery? It should be a 26R.

[PFord]

What number is your battery? It should be a 26R.

It is...

I've attached a couple of photos. Apologies for the angle and darkness. It's in the garage right now.

[inairam]

it is in backward.

[CharlieK]

it is in backward.

[ricky racer]

This is how I routed my battery cables.

[PFord]

it is in backward.

I figured. I bought it like this but it just didn't make any sense to me. I'll try to turn it around and see if it fits before making up a new positive cable. If not, I'll just run it like this until next month when I start on the electrics.

[PFord]

Welp, I removed the battery (which was in backwards), cleaned the battery terminals, cleaned the ground connection, installed the battery the right way, reassembled the battery box which now fits correctly, and buttoned everything up.

1 hour of work well spent and only 10-12 mosquito bites! So I'll call it a win.

Thanks for the help everyone. Tomorrow, I'll try to re-polarize the generator.

[Glen]

Hi,
The sticker on Pford's battery in his pics says it is a group 26R-2.

[Don McCombs]

Hi,
The sticker on Pford's battery in his pics says it is a group 26R-2. It looks like the positive and negative posts are reversed from the 26R battery.
If you put the 26R-2 in with the posts on the left side, the positive post would be at the rear.
The 26R has the positive post at the front, when installed with the posts on the left, like in the pic from the manual I posted before.

If you wanted it to be like original, you would need to buy a 26R battery, that is what Don said they have earlier in this post. Then make the cables to fit that battery.
But you said you don't care if it's exactly the same as original.

26R-2 is the Autocraft part number.
26R is the BCI group number.
His battery is correct.

[Glen]

Hi,
Don, below is a page from the 1965 Cub and LoBoy operator's manual, showing the original 12 volt battery. The positive post is at the left front of the battery.

http://farmallcub.com/rudi_cub/www.clea ... age-25.jpg

The positive cable in Pford's pics is at the right front.
If you turn his battery with the posts on the left of the battery box, the positive would be at the left rear of the box.
Look closely at the post positions in the pics.

I'm not saying his battery won't fit in the battery box, just that the posts are reversed.

I have seen other sizes of batteries that are the same size, and have the posts reversed.
They look the same, but the posts are reversed.

I didn't look to see if the 26R-2 designates that the posts are reversed from the 26R, I guess it doesn't.
My mistake.

Maybe in his pics his battery is connected with positive ground, then the positive post would be at the left front when he turned the battery around.
PFord, the 12 volt system is originally negative ground. I'm not sure if anyone said.

[PFord]

It's negative ground. By reversing the battery I own, the positive terminal sits to the rear, but that puts it closer to the hole where the positive cable leaves the box. And the Negative lead is attached to the front left battery box hold down bolt and comes up the front of the battery and to the terminal.

Maybe that's how the previous owner wanted it configured, but when I put it that way the battery fits and all the cables route perfectly. My goal was basically to not have the battery hanging halfway out the battery box! I wanted it to fit in it's proper space and have everything work. Not sure what I'll do when I need to replace this battery, but for now, it's all working as it should with strong start. How I don't know because the amount of corrosion at the terminals was ridiculous! I'll be tearing all that out next month, but for the moment, I'm back in business.

[Don McCombs]

Group 26 battery...

Group 26R battery...


Note that the terminals are reversed in the Group 26R battery. Hence the "R" in the designation.

[Glen]

Yes, I see Don, thanks. I was looking at the info below when you wrote your post, I guess.

My info above that Don copied is not right, I looked online to see what the battery number is.

Not sure what I'll do when I need to replace this battery, but for now, it's all working as it should with strong start.

I looked online, and the Group 26R battery has the posts backwards from the battery IH used in the 12 volt Cubs, in their pic that I posted from the operator's manual.

Below is info about the 26R, if you want to read it. It shows the positions of the posts in the 1st drawing on the page.

https://batterygroupexpert.com/group-26r-battery/

Below is info about the Group 26 battery, it has the posts the way IH used.

https://batterygroupexpert.com/group-26-battery/

[PFord]

It's super weird because my battery SAYS 26R but the posts are the opposite of what the 26R is supposed to be. My post config is that for a normal 26. However, because of my layout the 26 is the correct orientation for me. So I'll probably just stick with it, I've got plenty of other demons to fight!