Re: Voltage regulator bad?
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Posted by Don G. on November 25, 1998 at 23:40:03:
In Reply to: Voltage regulator bad? posted by Karl Lasse on November 08, 1998 at 20:00:02:
: I am working on my case 300 again. Cant seem to get my tractor to charge my battery. With some advice I have checked the generator. I grounded the "field" terminal of the generator and the ampmeter jumps to about a +10 or so. Does anyone know if this proves my generator and ampmeter are okay. I would assume they are? I made this assumption and took my voltage regulator apart and cleaned off all of the points and electrical connections. My amp meter still doesn't show a positive charge. Does anyone have any ideas. Could I have a junk voltage regulator. If I do, is there any way to check? Dear Karl I work at a alternator and starter repair shop for over 7 years. You by jumping a wire from field to ground have conducted a very important test. You made sure your generator and wiring harness all the way back to the battery are good. By cleaning the regulator you might have messed up. Generators are very touchy and so are the regulators. Your best bet is to replace the regulator, but then you might need to what they call polarising the regulator. There are usually good directions that come with the new one, but here the way it should go. On the regulator there are 3 to 4 terminals each one maked with little letters, like B,A,F and some times L. (B) is for battery (A) is for Armature (F)is for field and (L) is lite idiot lite that is if so equipt. The instructions should tell you after the regulator is installed before you start the tractor and with the battery hocked up to use a jumper wire and cross or jump from the B terminal to the A terminal this will polorise the regulator whether it's a positive ground or a negative ground system. And by the way if you want to switch from a pos. to a neg. system, now is the time to do it. And no the starter will not spin backwards. I hope I've helped.If you have anymore questions e mail me.
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