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Ford 9N, 2N & 8N Discussion Forum
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Re: Charge rate

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Author  [Modern View]
Dell (WA)

09-15-2013 18:23:56

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Ken........unlike modern 12V alternators, the original 6V generators do NOT charge at idle. You need about 1/4 throttle. As fer reading 3-amps, semi-normal. Me? Before I did ennythang, I'd re-polarize yer 6V-genny. Just "arc-spark" the side-by-side ARM and BAT screws on yer squarecan voltage regulator; engine OFF. I use a wide blade stubby screwdriver, you can use bailin'warr iff'n you want. You can "polarize" as many times as it takes to feel warm'n'fuzzy charged.

Batterys don't live forever, and iff'n yer battery is semi-dead, it takes overnite to re-charge it at about 3-amps. Ennythang faster will BOIL yer battery acid out. Which BTW, you need to check and "top-up" with distilled water. Iff'n you run outta battery acid/water you will WARP yer LEAD plated and then will DEFINITELY need a NEW battery. .......the charged Dell

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Ken B 8N NC

09-16-2013 05:33:47

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 Re: Charge rate in reply to Dell (WA), 09-15-2013 18:23:56  
I did the re-polarize trick in the begining, No change. The VReg was new 10+ years ago when I rebuilt the 8N. It has never charged more than 3-4 amps. The battery is 2 years old,the 4th one in 10+ years. I was thinking maybe I was never charging the battery enough and it was getting weaker every time I used the tractor to where it finally would not work at all. I thought the VReg controlled the amount of charge to the battery, IE the weaker the battery, the more the charge. This one stays 3-4 Amps no matter the condition of the battery. I ran the 8N 2 hours at 3/4 throttle Sat and the % of battery charge hardly changed at all.

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09-16-2013 06:16:04

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 Re: Charge rate in reply to Ken B 8N NC, 09-16-2013 05:33:47  
Quoting Removed, click Modern View to seeInstall this jumper from field to ground & this will force the generator to output its maximum possible current. Then look at ammeter & at voltage battery post to battery post after five minutes & compare to same voltage measurement taken before starting.


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Ken B 8N NC

09-16-2013 10:28:01

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 Re: Charge rate in reply to JMOR, 09-16-2013 06:16:04  
I jumpered the 2 points that you indicated on both generators and the amp meter went full scale to 30 amps. It still seams to me that the VReg is bad, no regulation.

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09-16-2013 11:51:55

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 Re: Charge rate in reply to Ken B 8N NC, 09-16-2013 10:28:01  
Quoting Removed, click Modern View to seeI would concur, with the exception, that if battery is already fully charged or has internal problem that would command the VR to cut back on charge current. Might be nice to try another battery or make sure that one is well discharged & re-look using VR.

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09-16-2013 11:58:37

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 Re: Charge rate in reply to JMOR, 09-16-2013 11:51:55  
Quoting Removed, click Modern View to see

said 'command' is the voltage of the battery. if the battery is at about 6.3 or 6.4V at room temperature, then its fully charged, the charge current would drop to very little.

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09-15-2013 19:18:58

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 Re: Charge rate in reply to Dell (WA), 09-15-2013 18:23:56  
If it is charging 3 or 4 amps, it IS polarized! So don't go messing, sparking, arcing & screw something up. Bad advice.

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Dell (WA)

09-15-2013 22:58:46

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 Re: Charge rate in reply to JMOR, 09-15-2013 19:18:58  
JMOR........I told him he could re-polarize as many times as it took to feel warm'n'fuzzy. It is GOOD advice.

Do NOT expect a genny to re-charge a DEAD battery. Is also GOOD advice. .........respectfully Dell

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