I have a 1971 ford 4000 i put a new generator and a voltage regulator on just recently. the light in the dash stays on, only to cut off if you disconnect the terminal form the battery or cutting the key off. There is power to both of the terminals at the generator. I took the pos(+) terminal while running and and it had power. Any suggestions to why the light is staying on?
FORD 4000 gen light
- Thread starter JRA29
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RickB
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The lamp is lit because there is a voltage differential between the accessory post on the key switch which feeds the lamp, and the WL terminal of the regulator, which is connected to the other side of the lamp bulb. Almost always an indication the system isn't charging. Did you polarize the regulator when you installed it? Is the regulator properly grounded?
RickB
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The 'E' terminal of the regulator must be connected to a clean ground.
Any new generator must be polarized before use. With the tractor not running, remove the wire from the regulator's 'F' terminal and momentarily touch it to the battery (B) terminal of the regulator. The quick surge of current will polarize the generator.
DieselPower
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Do as RickB sais. It sounds like the rotor in the new alternator is not magnetized. Momentarily touching the F terminal to the battery terminal will remagnetize the rotor. Basically it needs a jump start to get it working the first time. The slight magnetism in the rotor can be lost sometimes when they are being rebuilt or if they set around for a long time. Once remagnetized you shouldn't have any further problems.
Soundguy
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This a new indian made genny? if so.. she will deffinately need polerization...
post back if that got you going?
soundguy
post back if that got you going?
soundguy
RickB
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I'm glad you got it charging. The info I posted was almost verbatim from the Ford repair manual that covers 2000-5000 and 7000 tractors.