450D battery

Lester Hooper · Sep 14, 2011

I lent my 450D to a neighbor who generously replaced the weak battery with a new one. I just realized that he installed it with negative ground and I don't remember which way is correct. Can someone help me remember please?

Brownie 450 · Sep 15, 2011

Came from the factory with positive gnd.

sflem849 · Sep 15, 2011

They can go either way if you repolarize the system. Some VRs have a preferance. You should repolarize the system after having the battery off anyhow.

John T · Sep 15, 2011

If he got it wrong and didnt polarize prior to start up (which I doubt) the VR may be damaged. Id try to Polarize the genny n fire her up n see if shes charging??? If not the VR may be damaged.

John T
John Ts Charging Troubleshooting

Allan in NE · Sep 15, 2011

Your neighbor is right.

Diesels were 12v negative ground.

Allan

pete 23 · Sep 15, 2011

Factory positive ground on gas and diesel. If ammeter reads charge, engine off , light on it is backwards. If it reads discharge, lights on , engine off some one has switched wires on ammeter previously and not to worry.

Allan in NE · Sep 15, 2011

Doggone it,

Sure don't wanna argue with the Master, but the gassers were 6V positive and the diesels were 12v negative.

This started in 1954 on the 400.

Sorry fer being so darned old and rembering such silly things. :>)

Allan

D Slater · Sep 15, 2011

Have to agree with Pete, they came positive ground.

teddy52food · Sep 15, 2011

I agree with Allen . The only 12 volt pos. ground that I know of were the 2 cyl John Deere"s.

pete 23 · Sep 15, 2011

No negative ground until 460- 560 etc. Just take a peek in the parts manual, it shows positive ground at the battery on 450 diesel. They were 12 volts on those diesels always.

D Slater · Sep 15, 2011

Right in a 450D operaters manual.

Hayshaker · Sep 15, 2011

Our 450D had positive ground. I remember hooking up the radio and there was a switch on the back to set it for positive ground tractors. I still have that radio.

Dan MD · Sep 16, 2011

How do you repolarize the system?

Thanks,
Dan

d282 · Sep 16, 2011

Take a jumper wire and touch the battery terminal to the field terminal on your voltage regulator.

450D battery

Lester Hooper

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Brownie 450

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sflem849

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John T

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Allan in NE

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pete 23

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Allan in NE

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D Slater

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teddy52food

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pete 23

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D Slater

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Hayshaker

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Dan MD

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d282

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