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Farmall & IHC Tractors Discussion Board

Re: Generator not charging battery


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Posted by Bill Smith on August 13, 2001 at 20:31:46 from (128.242.4.59):

In Reply to: Generator not charging battery posted by Farmalittle on August 13, 2001 at 11:18:59:

Your 1940 H was originally equiped with a cut out instead of a voltage regulator. It was a box like thing on top of the generator that kind of looked like a voltage regulator but really only consisted of a set of points and some terminals for the wires. Your cut out had to be manually operated with your light switch nob. Check it out, it should have 4 settings and only 2 of these settings are for the lights. When it is at the first setting it is on low charge. The next click is high charge and the next adds low beam lights and the next click puts the lights on bright. You have to have all good connections from battery to ampe box and on out to the cut out on generator with good ground all over for this sytem to put out a charge. If you do a bunch of disconnecting and what not sometimes you have to repolarize the generator so it will charge the right way. If it turns out that indeed someone has put an actual voltage regulater on then be careful on checking this out. It is so easy to burn one of these up and they are expensive. The voltage regulator replaces the cut out when added and doesn't need to be manually set with the light switch nob allthough if they switched they probably kept the same light switch. A cut out operates a little different than voltage regulator so make sure which it is. The 8 volt battery was not original and was probably just added to have the extra juice.


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