Harvey 0 #1 Posted June 7, 2019 I have a 1989 520h 20 hp onan not charging. Getting 13 volts a.c. from stator is that enough? 0 on 12 volt out put should I Chang regulator see what happens? Share this post Link to post Share on other sites
WHX?? 49,281 #2 Posted June 7, 2019 (edited) Harvey. No that is not enough AC as measured on the two outside terminals. With the engine running 3600 RPM you shoul see 20-40 VAC. I would first change out the reg. just I know they do go bad, it's easy and cheap. Required reading here from the service manual. Edited June 7, 2019 by WHX24 Share this post Link to post Share on other sites
953 nut 56,016 #3 Posted June 7, 2019 25 minutes ago, Harvey said: Getting 13 volts a.c. from stator Just to be sure, you are measuring the AC Voltage between the two leads that go to the Voltage Regulator/Rectifier. Share this post Link to post Share on other sites
Harvey 0 #4 Posted June 7, 2019 But even at 13 volts out of stator should I get something out of regulator Share this post Link to post Share on other sites
Harvey 0 #5 Posted June 7, 2019 2 minutes ago, 953 nut said: Just to be sure, you are measuring the AC Voltage between the two leads that go to the Voltage Regulator/Rectifier. Share this post Link to post Share on other sites
Harvey 0 #6 Posted June 7, 2019 Yes 13 volts AC out of stator Share this post Link to post Share on other sites
WHX?? 49,281 #7 Posted June 7, 2019 (edited) No you would not, it is insufficient power to turn on the regulator. If the battery is not up to snuff it will not have enough voltage to turn on the regulator either. Edited June 7, 2019 by WHX24 Share this post Link to post Share on other sites
Lee1977 6,854 #8 Posted June 9, 2019 On 6/7/2019 at 5:34 PM, Harvey said: Yes 13 volts AC out of stator Did you check it with it unhooked from the reflector? Share this post Link to post Share on other sites
