twodealdrive Posted April 23, 2007 Share Posted April 23, 2007 I've read in all the posts I've searched that the R/R goes out quite often. Off the battery I'm only getting 12.6 or 7 volts at 5k with the high beam on. This would suggest R/R right? However, the readings I get off the alternator coil 3 plug yellow wires is 000 resistance, not 0.1-1.0. It always settles at 000. Is the alternator bad or is it the R/R? Can I test the 3 plug while the engine is running to see what the alternator is feeding the R/R? How do I do that, I haven't read that in the manual I downloaded. Thanks by the way to the person who did that. I'm fairly mechanical but not very good with electrics. Thanks in advance for the help. Quote Link to comment Share on other sites More sharing options...
SBBXX Posted April 23, 2007 Share Posted April 23, 2007 I've read in all the posts I've searched that the R/R goes out quite often. Off the battery I'm only getting 12.6 or 7 volts at 5k with the high beam on. This would suggest R/R right? However, the readings I get off the alternator coil 3 plug yellow wires is 000 resistance, not 0.1-1.0. It always settles at 000. Is the alternator bad or is it the R/R? Can I test the 3 plug while the engine is running to see what the alternator is feeding the R/R? How do I do that, I haven't read that in the manual I downloaded. Thanks by the way to the person who did that. I'm fairly mechanical but not very good with electrics. Thanks in advance for the help. Make sure you measure resistance with a DVM. An analog meter won't move enough for you to see it. Short the two leads together and note the reading. Then subtract that from the reading you get between the yellow wires. They should all be the same, about .6 ohms or so. Make sure you measure resistance to ground. There should be no continuity. Yes you can measure A/C from the yellow wires. The bike will run with the plug out. Can't recall the reading you should get, but if I remember correctly it's around 35 vac each. Maybe someone can clarify that for me. If your battery's not new, replace it or you'll burn everything out again. Good luck, I'm in need of a stator myself marty Quote Link to comment Share on other sites More sharing options...
Keith Posted April 23, 2007 Share Posted April 23, 2007 You should be reading around 50VAC (note, AC, not DC) between any two pair of the three yellow wires from the alternator/stator. You can test it while the bike is running. If you don't have around 50VAC or nearly that, your alternator/stator is probably shot. Quote Link to comment Share on other sites More sharing options...
twodealdrive Posted April 23, 2007 Author Share Posted April 23, 2007 thanks for the help guys, the battery is brand new and fresh off the charger and I've done the leak down test too. I've elmininated that peice from the puzzle but the other 2, I wasn't sure about. I'll try today to find out what the alternator is pushing out when I start it up, hopefully it will be around 50 VAC. Quote Link to comment Share on other sites More sharing options...
rockmeupto125 Posted April 24, 2007 Share Posted April 24, 2007 Failure of a regulator generally means it allows excess voltage through, not less. Don't get your hopes up. I suspect its a stator. Quote Link to comment Share on other sites More sharing options...
slowrideCX Posted April 24, 2007 Share Posted April 24, 2007 What is the round about mileage when the r /r starts to fail on these bikes? I just turned 30k should i start getting concerned? Quote Link to comment Share on other sites More sharing options...
airborneXX Posted April 24, 2007 Share Posted April 24, 2007 What is the round about mileage when the r /r starts to fail on these bikes? I just turned 30k should i start getting concerned? Yes. I'm thinking of ordering a new R/R and stator soon just to be on the safe side. My R/R went south around 35,000 miles, and I replaced it with a used one with unknown mileage. Quote Link to comment Share on other sites More sharing options...
Dotetcher Posted April 24, 2007 Share Posted April 24, 2007 What is the round about mileage when the r /r starts to fail on these bikes? I just turned 30k should i start getting concerned? Replaced the stator and R/R around 90,000 miles. the previous owner said he had not changed either so that would make them the original. I've since had to replace the R/R at around 120000 miles. So 90000 miles out of the first and 30000 miles out of the second. Quote Link to comment Share on other sites More sharing options...
SBBXX Posted April 24, 2007 Share Posted April 24, 2007 What is the round about mileage when the r /r starts to fail on these bikes? I just turned 30k should i start getting concerned? Worry more about replacing the battery often and the stator and R/R will last forever. Many feel if a battery starts the bike, it must still be good. Nothing could be farther from the truth. The biggest load on a charging system is a weak battery. Either have them tested, or replace them every 3-4 years. You can't invest 25-33 bucks a year any better. Never charge a dead battery on the bike, and if a battery has been drained fully, test it even if it's new. marty Quote Link to comment Share on other sites More sharing options...
slowrideCX Posted April 24, 2007 Share Posted April 24, 2007 Thanks for the info. Quote Link to comment Share on other sites More sharing options...
twodealdrive Posted May 1, 2007 Author Share Posted May 1, 2007 problem fixed, it's was the R/R and I replaced it with an 01 Yamaha R1 r/r and all is well. The reason the stator didn't check out is because we had too many beers and the gauge was set for 200 ohms instead of 20. Oooops. BTW, I have 43k on the bike when the original R/R went out. Quote Link to comment Share on other sites More sharing options...
slowrideCX Posted May 2, 2007 Share Posted May 2, 2007 problem fixed, it's was the R/R and I replaced it with an 01 Yamaha R1 r/r and all is well. The reason the stator didn't check out is because we had too many beers and the gauge was set for 200 ohms instead of 20. Oooops. BTW, I have 43k on the bike when the original R/R went out. Glad to hear your got-r-fixed :icon_clap: I am going to order the R1 R/R just to have it for when that day comes. Quote Link to comment Share on other sites More sharing options...
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