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Changing 6V to 12V

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vansequipment View Drop Down
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Joined: 26 May 2024
Location: Washington Stat
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    Posted: 26 May 2024 at 7:04pm
I am doing a total engine rebuild and a restoration on a 1957 D-14, S/N 5242.  I need to change the flywheel ring gear as it is badly worn and would like to convert to 12 volt as I have a 1959 D-14 that is 12v.  My question is this:  the current ring gear is 93 tooth and it looks like available new ring gears for 12 v are 116 t.  Also I will need to replace the starter and generator system with 12 volt upgrades.  It looks like from specs I have found the 116 t gear will fit on the flywheel.  I have converted other tractors and older trucks to 12 v so I think I have the program down, just don't know if the ring gears will fit flywheel that had a 93 t on it.  Anyone have any experience with this, or good advice?  Thanks in advance.
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2024 at 7:06pm
read what you are buying.. the 6 volt ring gear goes with the 6 volt starter... 12 v gear goes with the 12 v starter... you can run either on 12 volts... but if you need EVERYTHING, get all 12v PARTS.
Like them all, but love the "B"s.
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vansequipment View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vansequipment Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2024 at 7:12pm
Thanks, Steve.  That's what I figured.  Just wanted to check.  I also think I will go with negative ground so I can use LED lights.  Lots more light for way less amps.  I've done that on other tractors.  
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2024 at 7:14pm
Like them all, but love the "B"s.
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2024 at 7:16pm
you might want to consider an alternator with internal reg... as compared to generator with voltage regulator
Like them all, but love the "B"s.
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Post Options Post Options   Thanks (1) Thanks(1)   Quote jaybmiller Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2024 at 7:19pm
yes, starter pinion gear needs to be changes as well....
I used Delco CS-130 series alternators on my 4  D-14s...no need to trim tin ! just use generator pulley on the alternator. I also used a 2 wire ,1/2" round light in the dash as the 'idiot' light.

a 6 volt starter will have a brush shield or band on it, 12v  is a 'solid' shell.
3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water
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vansequipment View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vansequipment Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2024 at 7:54pm
Understood, I intend to get 12 v starter to match new ring gear.  
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Gary View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Gary Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2024 at 7:57pm

Original set-up from the Factory: D-10, D-12, D-14

Early 6 Volt system had 10 tooth Bendix and 93 tooth Ring Gear.

Later 12 Volt system had 9 tooth Bendix and 116 tooth Ring Gear.

I get them from NAPA

Gary
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HudCo View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2024 at 10:38pm
vans equipment where in washinton state are you located?  just curious
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vansequipment View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vansequipment Quote  Post ReplyReply Direct Link To This Post Posted: 27 May 2024 at 12:16am
Arlington, north of Seattle about 50 miles
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Post Options Post Options   Thanks (1) Thanks(1)   Quote DSeries4 Quote  Post ReplyReply Direct Link To This Post Posted: 27 May 2024 at 3:37pm
Original 6 volt generator can be rewired for 12 volts, need a new 12 volt regulator as well..  I have several like that.  Starter can stay 6 volt, just spins faster.  But since you are changing the ring gear, you will need a starter that mates up to it.
'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Steve in NJ View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Steve in NJ Quote  Post ReplyReply Direct Link To This Post Posted: 27 May 2024 at 6:12pm
I offer a complete 12V wiring system if interested. I also rebuild the Starter motors as well.
Steve@B&B
bb-customcircuits.com
39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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