Go Bottom1948 international Cub 12 volt or 6 volt Positive Ground?
 | mikemoyer
Join Date: Jan 2015 Posts: 3 west virginia 
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2022-02-10 200876
I am working on a 48 cub with 6 volt system is it positive ground?
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| Hogslayer
Join Date: Jan 2018 Posts: 45 Northern michigan
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2022-02-10 200878
The earlier Farmall tractor models Cub, A, C, H and M all had 6V batteries with positive ground. I'm not sure about the 200,300 & 400 models. I believe the 350, 450, etc. and newer had 12 volt batteries.
I understand the Cub model was also produced until much later, like up to the late 70's. Am assuming some upgrades were made along the way.
When I was real young about 5 years old, I drove our model A with hand crank start, mostly for sickle bar mowing. Dad always cranked it for me, since at that age I didn't have enough lead in my pants to do it. Besides, if it backfired during starting, allot of farmers got a broken arm as a result.
In '53 or '54 we got a model C to replace the A and H and a 400 to replace the M. Power steering wasn't on any of them. The 400 had a strong spring on the clutch. I locked my left knee and pulled with both hands on the steering wheel to dump the clutch. When I let go with my hands, I slide back in the seat and would take off smoothly. I could only steer when the tractor was moving.
Dad upgraded the C from a 6V positive ground system to 12V with negative ground. He got a Chrysler alternator, new coil and light bulbs and other stuff for the conversion. I believe he used the same starter. It sure spun fast and started much easier than before.
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Add Photo1948 international Cub 12 volt or 6 volt Positive Ground?
| charlieK
Join Date: Feb 2004 Posts: 136 kentucky
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2022-02-11 200880
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YES ....
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Add Photo1948 international Cub 12 volt or 6 volt Positive Ground?
 | kthompson
Join Date: Oct 2005 Posts: 5275 South Carolina 
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2022-04-01 200963
Hogslayer...enjoyed your post greatly. ....
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Add Photo1948 international Cub 12 volt or 6 volt Positive Ground?
| Smokinmad
Join Date: Sep 2016 Posts: 2 Illinois
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2022-04-24 200993
Grandad always told a story about a old ford firetruck at the plant that would never start when they needed it. So why wouldnt it start? Well turns out someone put new batteries in it, they hooked it back up with Negative ground....grandad changed it to Positive ground and it never failed to start again.
Correct grounding makes all the differance in the world. ....
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Add Photo1948 international Cub 12 volt or 6 volt Positive Ground?
| charlieK
Join Date: Feb 2004 Posts: 136 kentucky
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2022-09-19 201323
good thread----interesting ....
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