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D-10

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Nat View Drop Down
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Joined: 22 Sep 2009
Location: Lexington NC
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nat Quote  Post ReplyReply Direct Link To This Post Topic: D-10
    Posted: 01 Aug 2022 at 6:09pm
I have an early D-10. It is currently 12V Positive ground. I am assuming that it is charging since I haven't had to recharge the battery and I have started it many many times.  Is it supposed to be negative ground and if so have do I make it negative ground

Nat
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Larry in NC View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Larry in NC Quote  Post ReplyReply Direct Link To This Post Posted: 01 Aug 2022 at 6:17pm
Early D10's were 6 volt positive ground.  After serial number 3501, 12 volt positive ground.   If you have the original 6 volt generator, it will not charge a 12 volt battery.  If the generator has been replaced by an alternator, most require a negative ground.
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WF owner View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 01 Aug 2022 at 7:46pm
If it's charging, why would you want to change anything? They can be changed, but unless you have a reason, why mess with it?

A lot of older vehicles were positive ground. When they started using radios with transistors and using alternators, instead of generators, negative ground became the norm. Unless you are going to put a radio on it (or some other electronic attachment) or, as Larry said, change to an alternator, there is really no reason to change it to negative ground.
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 01 Aug 2022 at 7:59pm
probably suppose to be POSITIVE GROUND... Not much reason to change to negative ground unless you let others borrow it and they might put battery charger  on backwards..

To change to NEGATIVE ground is fairly simple... Starter does not care ... might have to switch wires on the amp meter....might have to FLASH the voltage regulator to get it to see the ground change.
Like them all, but love the "B"s.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2022 at 6:00am
To be correct, the generator is what gets polarized (flashed) to a given ground, not the voltage regulator.  The act of polarizing (flashing) the generator can be done at the generator itself or the regulator terminals for ease of access, leading people say they flashed the regulator. The generator produces power; the regulator only controls the generator output.  Some voltage regulators were/are ground specific.  If a regulator is labelled as ground specific it may need to be changed out if the generator polarity is changed.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2022 at 6:21am
Originally posted by steve(ill) steve(ill) wrote:

... To change to NEGATIVE ground is fairly simple... Starter does not care ... might have to switch wires on the amp meter....might have to FLASH the voltage regulator to get it to see the ground change.

You will also have to change the small wires on the top of the coil. On positive ground, the power wire from the switch will go to the negative (-) side of the coil and the positive (+) terminal on the coil will connect to the distributor. 

If you change to negative ground, you will reverse the wires.
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Nat View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nat Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2022 at 6:35am
Since it is supposed to be Positive ground I will leave it alone., I just thought it was wrong

Nat
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ac45dave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ac45dave Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2022 at 7:25am
Any Allis tractor before D21 and the 100 series was pos ground.D21 and the 100 series was the start of alternators and neg ground.
54 wd-45gas ; 56 wd-45d N/F w/fact p/s ; 63 d-17 sIII N/F gas ; 60 D14 N/F ; 67 d-17 sIV N/F gas ; 63D15 sII W/F; 39rc#667 ; 2021 massey 4710 fwa ; gravely 2 wheel tractors
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2022 at 8:50am
To be correct, the generator is what gets polarized (flashed) to a given ground, not the voltage regulator.

Your right Jim... I miss spoke... and i know better !
Like them all, but love the "B"s.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2022 at 9:33am
I'm sure you do, and I understand what you were intending, I just wanted to be sure those not familiar with the process understood what flashing is actually doing to what.
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