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Ford Tractors Discussion Forum
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Ford 3910

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Author  [Modern View]
Jamien

06-11-2019 20:17:27




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What year model is my ford tractor
Serial number-B996350

Model number- CA2136

I was told this was 3910 series 2?




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Destroked 450

06-14-2019 07:16:31




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Group 31 battery puts the studs or post up against the hood and sometimes doesn't allow the hood to close.

Group 49 battery is shorter and is a better fit, I have a group 49 in my 6610 and one of the 4000's, the rest will get changed over as the present 4DLT's go bad.



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Texasmark1

06-14-2019 06:31:58




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
If I understand the question correctly, the problem is battery cables to the starter?

OTR truck dealers have everything you need to replace your two wires and if routed properly, no reason to chafe (opinion based on BTDT). Just take your old ones in and tell them to make you a pair of these.

While you're at it they sell Size 31, ⅜" stud post, 925 CCA batteries for like $75....just bought one first of the year.....stock them by the pallet load. Yes the terminals are on either end with the 31 but when you have your cables made if you want to use that battery, just have them make one of the cables the additional length to reach the terminal on the far end of the battery.

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JayinNY

06-13-2019 20:24:21




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Don't know why posts from modern view don't show up in classic view, but Sean said he couldent find a good pic of the 3910 grill, as he said it is the same as a 4610, which is what I have, here's a pic of a 3910, there's no differences in them.



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Jamien

06-13-2019 17:29:58




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Quoting Removed, click Modern View to see

Thanks for the advice that seems like a good idea



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Sean in PA

06-12-2019 19:33:30




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
My guess is that the hood was replaced with one from a 3600. Look on the flat spot on the bell housing just above and toward the rear of the tractor from the starter. The flat spot is just above the two large bolt hole that I have circled in your picture. The serial number, model number, and Unit number should be stamped into that flat spot. They may be obscured by multiple layers of paint, so you may need to sand off the paint to see them, or you could try a pencil rubbing on a piece of paper.

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JayinNY

06-13-2019 16:20:27




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 Re: Ford 3910 in reply to Sean in PA, 06-12-2019 19:33:30  
Oops, ment for the original poster.



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JayinNY

06-13-2019 16:16:31




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 Re: Ford 3910 in reply to Sean in PA, 06-12-2019 19:33:30  
Can't help you with your model, but that's a common problem with Fords, positive wire shorts out on the hood and they burn up, wrap a hose or something around the positive wire so that dosent happen again. Had that happen to a 4600 years ago.

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Destroked 450

06-12-2019 18:15:38




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
That's stupid high.

I think we were going to use a 3600 harness from this site and make it work. $233



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Ultradog MN

06-12-2019 18:27:50




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 Re: Ford 3910 in reply to Destroked 450, 06-12-2019 18:15:38  
I don't know what extra electrics a 3910 had over a 3000 but a full conversion kit for a 10-SI with bracket and the harness is about half that.
He doesnt need the tach drive on the alt.
If the 3910 alternator bracket would accept a 10-si you could do it for about $125.



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Jamien

06-12-2019 15:54:27




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Does that sound right for that much money?



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Jamien

06-12-2019 15:52:11




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Quoting Removed, click Modern View to see
I m getting a quote of 1350 dollars for dent and rear harness



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Destroked 450

06-12-2019 14:15:31




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Everything about it looks to be a 3910 Series II, grille, lift controls, planetary rear axle.

3910 unit number should start with CA4, not 2.

8F05B could be a build date of June 05, 1988 which is correct for Series II models.

NH is the only place to get a wiring harness for that model, if it burnt the wiring at the cluster you'll need a complete harness.

Cost around $275.

Ironically I'm fixing to bring a neighbors 3910 to my shop with a burnt harness, it didn't burn as bad as yours.

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Jamien

06-12-2019 13:15:08




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Numbers was taken from tag under hood. Only number I could make out for sure was Unit. ID number. Is it possible to re-wire this or will I need to by harness? Only can get from ford dealer.



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Sean in PA

06-12-2019 13:00:44




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Well your pictures show a 3910 style grill.

Did you, in fact, get the model number, serial number and Unit number from the sticker under the hood? (I can't see a sticker in your picture that shows the hood up with the fire damage), or did you get the stamped numbers from the flat spot on the bell housing?



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Jamien

06-12-2019 12:51:55




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Quoting Removed, click Modern View to see





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Sean in PA

06-12-2019 12:41:18




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Unit Number 8F05B means it was assembled on June 5 1978 during the day shift. So the numbers are from the sticker under the hood? Then it's definitely a 3600 and not a 3910.



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Fordfarmer

06-12-2019 13:59:45




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 Re: Ford 3910 in reply to Sean in PA, 06-12-2019 12:41:18  
A 3910 would also have a double reduction rear end with wet disk brakes, right?



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Ultradog MN

06-12-2019 15:07:03




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 Re: Ford 3910 in reply to Fordfarmer, 06-12-2019 13:59:45  
Yes.



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Jamien

06-12-2019 06:08:03




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 Re: Ford 3910 in reply to Jamien, 06-11-2019 20:17:27  
Thanks for information trying to get correct wiring harnesses due to small fire burnt mine up.
Unit # 8F05B



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JoeM(GA)

06-12-2019 07:05:01




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 Re: Ford 3910 in reply to Jamien, 06-12-2019 06:08:03  
clean everything on the starter boss and look at the numbers again, the "CA2" is a 3600 from 1976-1981



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