QuestionQUESTION: Hi Mike
I ve got problems with holding charge on my battery. After a long ride here the other day , battery went totally dead. The battery is almost brand new. After getting home I checked the fluid level in cells , and had to top pretty much up with distilled water. Now the battery is standing for a charge hoping I can get it up in power again.
Now - im looking to sort out this problem , cause the bike doesnt charge the battery at driving, it just uses all the power on it. Here in Denmark we go with headlights on in daytime on vehicles , so it nesseceary to have a battery in good condition.
The charge relay is a 4 - pin plug model. How can i easy check the system ? I only have a multi function volt meter/tester avaliable and im not an eagle in electrical matters. :) As i see it , theres only to possible explanations . It can be a faulty charge relay or a faulty generator ? Or is it a dynamo sitting on my bike ?
Can you help me ? :)
kind regards
Carsten
ANSWER: First, after you get the battery charged, start the bike and at the battery test what the voltage is. At 2000 RPM you shold be getting around 13.5 volts. If not then check the stator for ground with a OHM meter at each pin. If you have a ground then the stator is bad. If not then the regulator is bad
Good luck and happy riding
Mike
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QUESTION: Hi Mike
Got the battery fully charged . Started up the bike. Readings at pins said around 42 VAC . Readings at battery said 14,3 DC volts. Then I waited 4 hours letting the bike cool off again. Started it again. Readings then said 12,76 DC volts at battery !! And thats too little with the engine running. Is it ment that the regulator charges all the time when motor is running ? Or is it periodic ? Does it turn off charging after a while so that the battery doesnt overload - and "cooks" off the distilled water in cells ? If that isnt so - I think i got a periodic faulty regulator - or ?
kind regards
Carsten
ANSWER: You should have a constant voltage at the battery of around 13.5 to 14, so you have a fault at either the stator or the regulator. You stator should be putting out more than 42 volts, so I would change it out. Remember, you can have a bad stator which will burn out the regulator. So they might both be bad
Good luck and happy riding
Mike
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QUESTION: Hi Mike
Okay. Now im getting closer at the target :) Which pins is there over 50 VAC at in the male plug at the stator ? Is it the two in the middle of the 4 pins ?
Is it normal that theres only 3 wires from the female 4 pin plug at the regulator ? Theres 4 holes in the female plug and 4 pins at the stator .
kind regards
Carsten
AnswerAt the stator you should have 50-100 ac volts at the white to white wire. At the blue to red wire you should have 75-125 ac volts. Any pin to ground should be zero ohms. You should have 4 wires coming out of the stator and 4 wires from the regulator
Good luck and happy riding
Mike
