| Author | Message | ||
     Vagelis46 |
I checked my stator, and there is some continuity between the 3 cables coming out of the stator. The meter's buzzer makes the sound when connected across the cables. Also there is an Ohm reading. But I still get the battery charged, from the system. I have a voltmeter installed on the bike. The volts are OK but occasionally the meter shows overcharging for a few minutes, then after I stop, the voltage is right again. Is this the first sign of a bad stator ? Will my charging system go 'dead' soon, and I am left on the side of the road ? | ||
| Reepicheep |
Between each pin, it should buzz. The resistance should be something like 6 ohms (don't trust that, its from memory). There should be no buzz between any pin and ground, and infinite resistance. That sounds more like a voltage regulator... how much over voltage does it get? | ||
| Vagelis46 |
I get a buzz between the stator pins and ground. I will double check tomorrow. The is still AC output from the stator. Is this normal ? Is this the first sign that the stator will soon 'die' ? The over voltage is indicated on the voltmeter I have installed on the bike, about 16V, while I am riding. But then I drop the revs, and the voltmeter shows normal charging. Then after a while the voltage on the voltmeter goes up again, and so on.... Could it be the voltmeter going bad ? But even if this is true, why I get the buzz from stator-ground ? I have already experienced being left on the side of the road, from electical problems of my XB. That time it was bad connectors between the stator and voltage regulator. That was a no-charging situation, that is why I installed the voltmeter. Now I get this. What should I do ? | ||
| Reepicheep |
Hmmm... Something does not make sense. You should not be able to get a 16V over voltage on the bike unless your voltage regulator has stopped regulating... The battery can't go up that high, so it has to be the stator putting out voltage and the VR not bringing it down. But a short to ground suggests that the stator is dead, which means it can't put out too much voltage. Harbor Freight had $3 digital multimeters when I was in there yesterday, perhaps its time to upgrade  Check the real ohms between each pin, and the real ohms between each pin and ground, and we can go from there... | ||
| Bad_karma |
can you verify that the meter on the bike is accurate? Joe | ||
| Vagelis46 |
I just verified that the voltmeter on the bike is OK. As soon as I got overcharge on the voltmeter, I put a multimeter across the battery poles which showed 17.5V. So I definately get too many volts. The strange thing is that it goes up, then I pull the clutch the revs go down and then the voltage is OK. Then it goes up again. Maybe this symptom is a stator nearly at the point of breaking. The manual says that if there is continuity across stator cables and ground, the stator must be replaced. Maybe I will get to zero charging soon. | ||
| Reepicheep |
Remeber Al's post? Every problem is a grounding problem until proven otherwise. But a bad VR would be my second guess. Can't imagine its a stator, unless you really are getting resistance to ground from one or more pins. That still does not explain how you are getting more then 13.5 volts or so out of your regulator. | ||
| Vagelis46 |
I have just ordered a new stator and VR. I will replace them. The XB's electrical problems are getting annoying. | ||
| Nautique4life |
I am ready to test mine as well. I go out to the garage(shop) to play with my voltmeter and realize my buddy has my manual. IF anyone reads this, can they point me in the right direction to find the info either here or online. I looked around in the manuals section in the KV, no dice. I am looking for the exact procedure to test my stator so i can get betsy back on the road. I think it's my stator, but after reading this post, could be the VR, I finally get time to do this tonight, but of course i dont have the instructions. | ||
| Uepw1997 |
Newly registered and first post: I have a 2004 XB12S Lighting, bought last year and ran it pretty much all summer with no issues. Couple weeks ago as I am getting ready to leave a friend's house, notice that their is dogfood stuck in my fan housing; I drove it home and the Ck Engine Light pops on - figure it's a code because the fan can't spin. Got it home, pulled the seat off and the fan screen, cleaned out dog food that blocked the fan. Next day, started it and ran around the block, Ck Engine Light still on, no problem running the bike otherwise. Go out to start the bike the next day, bike starts, no headlight. Next day, no power at all. Mind you I have this bike on a battery tender and the BT shows it simply maintaining the charge. I bought a shop manual and am studying it, but do not have a ton of experience with servicing bikes. Any feedback you can offer is greatly appreciated. | ||
| Reepicheep |
Welcome! There are a number of things that can be wrong and we may have to thrash a bit to get to the right one, but we can usually get there pretty quick. For the first and easy test, slap a digital volt meter on the battery leads, first with everything turned off, then with the headlights on (or trying to turn on anyway) and tell us what the voltages say. That won't let us give you an answer, but it will help us know what the next question should be. If you want to skip ahead, you can also disconnect the voltage regulator from the stator, and measure the resistance on the stator end of that connector. Measure each pin to each pin, and each pin to ground, and tell us what those say (Ohms). That may not be what is wrong, but it is the easiest and most conclusive test to run. Inspect that connector while you have it apart, it's historically been a trouble spot on the XB's. | ||
| Frausty12r |
You first need to disconnect the negative terminal of the battery, then disconnect the stator to VR connector. There should be between .1 and .3 ohms on each winding (pin1 to pin2, pin2 to pin3, and pin1 to pin3. There should be ZERO continuity to ground, a measurable ohm reading indicates a short to ground and the stator must be replaced as it will not produce power correctly. As far as the over-voltage in the 17.5 range, it sounds like a bad VR. From what I hear, and correct me if I'm wrong, anytime your stator goes, your voltage regulator goes right along with it, or vice versa. |
