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Kohler Generator Leaking Oil

Discussion in 'General Discussion' started by TUS NUA, Sep 25, 2020.

  1. TUS NUA

    TUS NUA Member

    44
    Dec 4, 2019
    2003 320 Sundancer, Garmin GPSmaps 741xs
    350 Mercruisers (twin)
    Good morning!

    Just checking to see if anyone has come across a similar scenario than what I am currently experiencing.

    I have a 2003 320 Sundancer and my Kohler generator appears to be leaking oil. For the past week, oil is collecting in the bottom tray of the generator. However, oil level appears to be fine. There is no visible evidence of where the oil is coming from from the front view of the generator. Yet, each time I absorb the oil, the next day, oil is back in the tray.

    Any ideas where there may be other places (back of generator) that oil could be pooling from?

    Otherwise, the generator is running fine.

    Happy Friday all and thanks in advance for clues.
     
  2. wyrman

    wyrman Well-Known Member

    Jul 12, 2012
    Tri-Cities, Wa
    2007 310 Sundancer
    Twin 350's, V drives
    1994 18' Bluewater bowrider
    My generator shut down recently because of low oil. The oil drain had vibrated open enough to leak. Closed it, topped it off, and it's all good again.
     
  3. h_gerry

    h_gerry Well-Known Member GOLD Sponsor

    Jun 19, 2013
    Oceanside, NY
    400 Express Cruiser - 1994 with
    Raymarine RL80C, Northstar 6000i GPS
    Kohler 5E
    454 Mercruiser Inboards
    My Kohler 5E generator developed a leak from the end seal of the crankshaft behind the flywheel (thankfully). I needed to remove the flywheel with a puller and replace the oil seal. Overall not a bad job that I was able to do in the boat (have a 400EC with the generator on the centerline aft in the boat with space to sit in front of it). Had to disconnect water line and spin the generator to get access but it worked.

    Take a look at the bottom of the flywheel to see if you have oil dripping there or if it appears to be splashing off the flywheel as it spins.
     
  4. h_gerry

    h_gerry Well-Known Member GOLD Sponsor

    Jun 19, 2013
    Oceanside, NY
    400 Express Cruiser - 1994 with
    Raymarine RL80C, Northstar 6000i GPS
    Kohler 5E
    454 Mercruiser Inboards
    I have a length of clear hose that I leave attached to the oil drain fitting that I use for oil changes for this reason. I snake the hose around a nearby support to keep the end above the top of the generator so it can't drain out if the valve gets opened. (It would still likely leak under pressure if the generator is running, but will prevent a spill when generator is off)
     
    wyrman likes this.
  5. wyrman

    wyrman Well-Known Member

    Jul 12, 2012
    Tri-Cities, Wa
    2007 310 Sundancer
    Twin 350's, V drives
    1994 18' Bluewater bowrider
    Good idea, I will do that as well.
     

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