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Thread: 912 alternator not charging

  1. #1

    Join Date
    Nov 2014
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    Sebastian, FL
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    Default 912 alternator not charging

    so... I taxied out to the run up area and discovered my alternator seemed to not be charging ... I sense I'm about to begin a long process, so i'm just wondering if anyone has any particular insight that may save me time?
    thanks in advance,
    Karl

  2. #2
    Super Moderator desertdave's Avatar
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    Default Re: 912 alternator not charging

    Have you checked the alternator fuse or circuit breaker yet? Loose wires? Start with the easy first.
    Dave
    KitFox 6 Taildragger
    912 ULS
    Whirlwind 70” Prop
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    All around nice guy

  3. #3

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    Default Re: 912 alternator not charging

    Hi Dave,
    thanks for your response - after an afternoon of troubleshooting I narrowed it down to the rectifier. I get 16V AC in (from the alternator) and 0 volts DC out.
    Don't know why it should have gone bad, its all new.
    --- Karl

  4. #4
    Super Moderator desertdave's Avatar
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    Default Re: 912 alternator not charging

    Dave
    KitFox 6 Taildragger
    912 ULS
    Whirlwind 70” Prop
    Garmin G3x
    All around nice guy

  5. #5
    Super Moderator Av8r3400's Avatar
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    Default Re: 912 alternator not charging

    Regulator-Rectifier fail frequently. I carry a spare when going cross country.
    Av8r3400
    Kitfox Model IV
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  6. #6

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    Default Re: 912 alternator not charging

    Quote Originally Posted by desertdave View Post
    Hi Dave, thanks for the link.
    I snooped around and discovered I didn't have a good ground on the rectifier, but the problem is rectified :-)

  7. #7

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    Default Re: 912 alternator not charging

    Quote Originally Posted by Av8r3400 View Post
    Regulator-Rectifier fail frequently. I carry a spare when going cross country.
    thanks for the heads-up

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