Ranger 8 - ONAN 16hp - Battery not charging
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  1. #1
    Join Date
    Apr 2013
    Posts
    13

    Ranger 8 - ONAN 16hp - Battery not charging

    I got a Ranger 8 with ONAN 16hp engine . 2 cylinder

    It works great but the battery is not charging.

    With the engine working to its maximum idle, I got 12.2/12.30

    I changed the voltage regulator (for a cummins original), I got a new battery,
    the stator seems to be fine - I tested it and shows continuity
    and it's not grounded.

    Everything seems to be fine and I don't know what else to look for.

    I'd appreciate some advise.

    Thank you.

  2. #2
    Join Date
    May 2008
    Location
    Orange, TX
    Posts
    11,573

    Re: Ranger 8 - ONAN 16hp - Battery not charging

    If that voltage reading is at the battery, I would check the engine harness plug to make sure the terminal connections are good. Common failure point.

    Depending on engine spec#, stator resistance is either .06-.10ohms or .10-.19ohms.
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  3. #3
    Join Date
    Jun 2008
    Location
    Hardwood Lands, Nova Scotia, Canada
    Posts
    1,502

    Re: Ranger 8 - ONAN 16hp - Battery not charging

    Check it like Duane said.
    If it's the same setup as a lawntractor charging system disconnect the regulator and check for AC voltage coming from the stator, should have 'round 25VAC± at a fast idle. Could have lost the magnets from the flywheel.....Mike

  4. #4
    Join Date
    May 2008
    Location
    Orange, TX
    Posts
    11,573

    Re: Ranger 8 - ONAN 16hp - Battery not charging

    I thought about the magnets too Mike but if they came loose I suspect the stator would be toast and show shorted to ground, open or both.

    Still, if everything else (except AC output) checks out, time to pull the flywheel.
    MM200 w/Spoolmatic 1
    Syncrowave 180SD
    Bobcat 225G Plus - LP/NG
    MUTT Suitcase Wirefeeder
    WC-1S/Spoolmatic 1
    HF-251D-1
    PakMaster 100XL
    SA-200 Blackface Code# 8638
    Star Jet 21-110

    Two term limit - one in office, one in jail.

  5. #5
    Join Date
    Apr 2013
    Posts
    13

    Re: Ranger 8 - ONAN 16hp - Battery not charging

    Everything is working now.

    I checked and found that the B+ wire was cut. I connected it and that was it.

    Thanks!

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