2004 42 Sundancer

Discussion in 'General Maintenance/Repair Questions' started by JohnRI, Aug 11, 2018.

  1. JohnRI

    JohnRI New Member

    Aug 11, 2018
    2004 Sea Ray Sundancer
    I am purchasing a 42 Sundancer, after having the survey completed yesterday, The surveyor recommended that the Onan 9.5 k generator is on its last leg, It is running fine, but there was a lot of corrosion and looks rough. The rest of the boat is mint.. My question is can the a new generator be installed without actually having to lift out the port motor ? The surveyor didn't seem to this so, or can a new one be installed in pierces? has anymore had to replace this ? and if so.. what does it involve? looking for input
  2. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    I would go with what your surveyor says. Sometimes it takes less time to lift a motor out of the way to gain access to something than to try to work around it.
  3. techmitch

    techmitch Well-Known Member SILVER Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
    Yep, sometimes "more is less".
  4. Larry Sturm

    Larry Sturm Active Member GOLD Sponsor

    Mar 26, 2017
    Chiefland, Florida
    2003 SeaRay 420 Sundancer
    2003 SeaRay 320 Sundancer
    Cummins 6CTA8.3-M3
    Mercruiser 350MPI
    It is not surprising that the gen may look rough and the rest of the boat is mint. The 420’s were known to have water from the fresh water shower located over the gen have water run down and land on the top of the generator. On my 420 the fresh water shower was off limits, we use the fresh water wash down on the back of the boat to rinse off to help prevent this corrrision problem on the gen. If it runs good I won’t waste the money for a new gen just because it doesn’t look good.
  5. becnme

    becnme Member

    Oct 31, 2008
    Fort Myers
    06 Tiara 36 Sovran
    Cummins QSC 500
    I have to agree with Larry about not replacing the gen if the surveyor is basing his recommendation based on looks.
    On my previous 420 the gen looked terrible and after removal of the sound shield the rest of the gen looked and ran fine.
    I did replace the pan which was a job but was done without removing an engine or the gen for that matter. I took the sound shield home to my garage and repaired and repainted the rust and when it was installed over a freshly painted engine and a new pan it looked like new. While it was pulled away from the wall I replaced the hoses and renewed the heat exchanger which had not been touched since new. After cleaning the heat exchanger, all wire connections and grounds it started and ran like new when needed.
    I found a different cause of the rust being rain/wash water was entering the hole for the cockpit shower hose not the use of the shower. The water would follow the hose down to the top of the sound shield and run all over. I ran the hose a different way and sealed the hose which seemed to stop the damage.
  6. Larry

    Larry Active Member

    Oct 19, 2006
    Oakland, NJ
    2004 42 Sundancer
    Hydraulic platform
    Cockpit air
    KVH M3
    450hp Cummins
    My 420 the previous owner replaced the entire stater on the generator they basically slid the entire generator out once they removed the big exhaust hose.
  7. copb8tx

    copb8tx Well-Known Member

    Jan 26, 2008
    Lake Texoma, TX
    2005 420 Sundancer
    T-8.1S Horizons
    I always love it when people drop into the forum, ask for assistance, get plenty of very useful information, don't acknowledge it and disappear.


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