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Jubilee charging question...

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EDDIE8N

06-07-2003 14:07:32




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Put a set of lights (three of them) on my Jubilee last night. Pulled it outside the garage to adjust them and noticed that the amp meter was showing about 6 amp discharge. Turn the lights off and guage goes to +8 to +10 then slowly goes back to about +3 to +4. Every time I switched the lights on the meter would show a discharge, even at 1800-2000 rpm. Tractor has original 6V system with positive ground. I have a new amp meter on it that I put on shortly after I bought it. The lights I installed were aftermarket lights that were on the tractor when I bought it. I was just remounting them after having taken the loader off.
Does this sound like a voltage regulator problem or would it more likely be in the generator?
Any thing I can check with multi-meter or should I just replace the regulator and have generator checked out at a repair shop?
Thanks in Advance,
EDDIE8N

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ZANE ---LOOSE FAN BELT!

06-08-2003 06:03:50




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 Re: Jubilee charging question... in reply to EDDIE8N, 06-07-2003 14:07:32  
LOOSE FAN BELT



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souNdguy

06-07-2003 21:41:36




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 Re: Jubilee charging question... in reply to EDDIE8N, 06-07-2003 14:07:32  
When i had the genny on my 8n rebuilt, the shop tol;d me it had probably been changed out in the past, as the 8n cam with an 'a' circuit genny.. and mine was a 'b' circuit one... not sure what tractors use dthe 'b' circuit one.. maybee naa?
In any case, when i asked about output, the guy said maybee 20 tops, under all ideal conditions, more likely 16 at every day rpm and conditions.. I've had mine between 11-15 just after a start, with all three lights on ( 2 headlights and one rear light ).. tapered down to about 9-11 after a few minutes...

Perhaps you could full field it to see what it will put out max...

I can't remember exactly how that is done.. ( seem to remember grounfing the field.. ) but someone more familiar with that procedure will probably chime in now.. )

Make sure your connections at the reg are good.. including the ground reference if it has one ( the older 4 wire ones were wired I think.. due to the insulated bracket.. the newer 3 wire ones ground via the mounting screw... bad ground reference = porr performance.


Soundguy

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Rob

06-07-2003 15:03:34




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 Re: Jubilee charging question... in reply to EDDIE8N, 06-07-2003 14:07:32  
Eddie the genny shop can check the regulator also. Don't replace it unless you know it's bad I say. Does your manual tell you how to adjust the output of the genny? It should tell you how to test the genny anyway but a shop can do it for you. Maybe they can adjust the output some.
Check your connections; clean, brite and tight. From the genny all the way through to the lights. You don't need the added resistance of dirty connections. Repair or replace all worn, cracked, frayed, or damaged wires and connectors. Wire brush any posts. Take care of the small stuff and maybe the big stuff will be ok. Brushes and springs for the genny are just a few bucks. Do you know how to renew the commutator?

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EDDIE8N

06-07-2003 20:14:29




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 Re: Re: Jubilee charging question... in reply to Rob, 06-07-2003 15:03:34  
Rob,
I agree that it only gets replaced if it is bad.
That's why I wanted to know if there was any way to check it out.
I checked the IT FO-19 manual.It only had one paragraph about the generator, and part of that was the Ford part #. Owners manual isn't any better.
I do have to admit , the wiring looks rather old, but all connections are clean, bright, and tight.
As for the commutator, I always cleaned it with emery cloth. I read somewhere that you should notch the grooves in it with a hacksaw blade. Does that sound right to you?
Thanks for reply,
EDDIE8N

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Rob

06-08-2003 01:54:51




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 Re: Re: Re: Jubilee charging question... in reply to EDDIE8N, 06-07-2003 20:14:29  
Yeah that's it. You break your old hack saw blade so you have a piece with teeth out on the very end and you use that to clean out the insulation between the copper. 1/16" is plenty, it's soft and easy. So long as the windings are ok on those gennys rebuilding is a snap, and cheap.
Watch these guys at the chain auto parts stores, all they know is to sell you a rebuild. I've seen those clowns didn't know they had parts for alternators. The $110 alt on my tbird can be rebuilt in about 15-minutes for less then $20, that includes a new regulator. That freaks out the auto parts guys at Auto Zone to see they have parts.

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Claus

06-07-2003 14:50:55




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 Re: Jubilee charging question... in reply to EDDIE8N, 06-07-2003 14:07:32  
I do not have any data, as to how many amps the NAA Gen is capable of. Generators can only produce so much curren. This drops off through the years as brushes wear, commutators get dirty and spring tesnsion is deminished. Data sheets have data for new units and many mistakenly take this to be fact on older units... Additionally, lights are heaby current consumers. Your lights may require more current than the charging system is capable of. Ensure the drive belt is tight....
Happy Motoring
Claus

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EDDIE8N

06-07-2003 19:46:51




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 Re: Re: Jubilee charging question... in reply to Claus, 06-07-2003 14:50:55  
Claus,
I guess it is generator rebuilding time from the sound of things.
What stumped me was that when I bought the tractor, I could turn the lights on and it would still show a charge. Of course that was also with the old (original) amp meter. Is it possible for one meter(the old one) to show a system charging and another meter (the new one) to show the same system as discharging?
Just trying to figure this out.
Thanks for reply, EDDIE8N

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