generator headache on 2000 series Ford

[Shoepeg]

I apologize for repetition if this has already been covered by you guys but this is my problem. If the generator light stays on while the motor is running, that means the generator is not charging? I just bought a new battery. Tractor cranks and runs fine but the generator light stays on. It has the Lucas type generator.
 

[Will Gumbert]

Yes, that is an indication that the charging system is not working, but to be sure you should do some checks. You didn't say if this problem suddenly appeared on a tractor that was working OK, or what year the tractor is or whether it is 6V or 12V but I'll assume it's 12V and the following generally applies. With the tractor running at about 1000rpm, use an analog volt meter to check the voltage across the battery terminals (digital meters may not show a stable reading). If it's not at least 13V then there's a problem. Next thing would be to make sure the wiring is correct and intact and that the generator and battery are well grounded. You may need to refer to a wiring diagram, do you have access to one? It's always best to diagnose things first, then post back with more info. -Will
 

[Shoepeg]

Sorry about that! It's a 1977 year and yes it is a 12V system. I'll be checking the wiring over the next few days. The chipmunks down here love chewing wires! I'll get a meter on the battery also and post back. I really appreciate the help, Will!
 

[Tater_51]

I'll have to do the same. Just changed the bulb and found that my light stays on as well. It's a 861D. The PO had converted to an alternator, I think a single wire installation, so I don't know if that could be a problem source. I will check the voltage across the battery while running.
 

[Sean in PA]

[souNdguy]

i agree.. 77 should be a 2600 with an alternator.

double check what you have and get back to uss.

if it is a genny.. try polarizing it and see what happens.

jump bat to field.
 

[Shoepeg]

It has the 2000 series decals so I guess it's a 1974. I was told
it was a 77. Guess he didn't know what he was talking about
and I never checked the casting numbers. I just took his
word for it. It does have a generator however and an
external voltage reg. I'll be trouble shooting some more on it
later this week using some of ya'lls advice and post back. I
do appreciate everything guys.