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Case Tractors Discussion Forum

Case Vac, generator

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don E. Foster

08-13-2005 10:24:02

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How do I test my own generator. I am quite a ways from and auto/electric. Maybe I need to test the regulator. Thanks....

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Don E. Foster

08-13-2005 15:11:47

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Re: Case Vac, generator in reply to don E. Foster, 08-13-2005 10:24:02

To Paul F:

My E-MAIL ADDRESS:

[email protected] , Thanks

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Paul f

08-13-2005 16:25:14

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Re: Case Vac, generator in reply to Don E. Foster, 08-13-2005 15:11:47

Don ..You should have mail
If you need anything let me know

Paul f

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Paul f

08-13-2005 14:41:41

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Re: Case Vac, generator in reply to don E. Foster, 08-13-2005 10:24:02

Ground the F (Field) terminal on the regulator..Ammeter should show full charge (ABOUT 12 AMPS). If it does generator is OK problem is regulator or more likely wiring and grounding

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Paul f

08-13-2005 14:50:40

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Re: Case Vac, generator in reply to Paul f, 08-13-2005 14:41:41

Don; I treid to email you I have a diagnostic flow chart to help you

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Paul f

08-13-2005 14:50:21

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Re: Case Vac, generator in reply to Paul f, 08-13-2005 14:41:41

Don; I treid to email you I have a diagnostic flow chart to help you

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F-I-T

08-13-2005 14:49:42

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Re: Case Vac, generator in reply to Paul f, 08-13-2005 14:41:41

Don:

If you need to test a bit deeper, you can motor it and see if the generator itself is electrically all right.

To test the generator by motoring it just unhook the [F] post wire & run battery voltage to the [A] post on the generator, if it motors [belt off] the armature is probably ok, while it is motoring ground the [F] post & it should slow down, if so the field is probably ok.

Frank

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holcombwa

08-14-2005 11:03:44

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Re: Case Vac, generator in reply to F-I-T, 08-13-2005 14:49:42

Ok, for those of us electrically challenged, what terminal is the F, the A etc. Went out to our VAO (we use the time honored system of trickle charging one battery in the barn so we can switch when we get out of the field) and found the regulator had one wire on the end going back to the dash and one out its bottom going into the generator. What wire is the F terminal, what is the A terminal, and do you test with tractor running, off with ignition switch on or off with everything turned off. Would love to get the generator to work if possible: though the two battery system is a vast improvement over cranking it by hand all the time like I did growing up.
All help is appreciated.
Stan

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F-I-T

08-14-2005 15:47:05

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Re: Case Vac, generator in reply to holcombwa, 08-14-2005 11:03:44

Well, the "F" is for Field, and it should be the smaller of the two terminals. "A" is for armature, and it does the work, so it is larger. It should be stamped in the case of the generator as well.

When I get a chance I'll get a picture of the terminals on my VAC, but it uses a cut-out, and not a voltage regulator, so it may be confusing to some.

For sure the fastest test there is, if you ground the "F" terminal the generator should have full output on the ammeter. That is how they handled it on the cut-out models, with a two position light switch that full-fielded the generator for FAST charging in the mid position, and if you pulled the switch out all the way, you got full field and lights. They would set the generator third bursh to supply juice enough to cover the distributor and lights, plus just a little for the battery, and that's how it worked.

Frank

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