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Ford Jubilee Charging system

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04-30-2003 07:54:29

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Had a bad battery, replaced it, the amp meter read negative, replace the voltage regulator and it still reads negative. Checked the regulator by shorting out posts and generator is putting out 12vdc, I know its a 6 volts system but I was just bypassing the regulator. When bypassing regulator amp meter reads positive. Ground is on positive also. This is a 6 volt system. Any help appreciated.

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Tim Dalrymple

04-30-2003 10:08:24

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 Re: Ford Jubilee Charging system in reply to MGM, 04-30-2003 07:54:29  
What is the voltage reading out of the regulator?
What is the voltage reading into the regulator?

The ammeter will only really deflect much if the battery is low. The closer to full charge you are the less current you will have due to internal resistance of the battery.

First try starting the tractor, then removing the ground connection from the battery. If the tractor still runs, the charging system is OK. Next, read the voltage across the battery with the tractor running. It should be 7 to 8 volts. If it is, the charging system is working.

Tim D.

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04-30-2003 10:15:20

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 Re: Re: Ford Jubilee Charging system in reply to Tim Dalrymple, 04-30-2003 10:08:24  
Voltage Out = 0
voltage In = 6

When jumpered field to armeture generator puts out 11 vdc. measured at the battery and amp meter reads 30 amps. New 8 volt battery , same battery voltage as last 4 1/2 years. New voltage regulator, connections all checked with DVM

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04-30-2003 08:44:33

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 Re: Ford Jubilee Charging system in reply to MGM, 04-30-2003 07:54:29  
It sounds to me like the regulator isn't grounding properly or is grounded where it shouldn't be. I'd check the mounting and insulator rubbers on it.
Good Luck, Lee

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04-30-2003 08:48:48

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 Re: Re: Ford Jubilee Charging system in reply to Lee, 04-30-2003 08:44:33  
Checked everything with a dvm, ground contacts to body, double checked everything, Mike

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