Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › QSB 5.9 with Zeus pods – where is gear lube cooler?

  • This topic has 2 replies, 2 voices, and was last updated 2 years ago by Yury.
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  • August 9, 2021 at 7:24 am #119196

    Yury
    Participant
    Vessel Name: Sea Ray 450 SB
    Engines: T-Cummins QSB 5.9 480 hp
    Location: Hallandale Beach, Florida
    Country: United States

    Good morning all,

    My 2012 Sea Ray is powered by twin QSB5.9 480 HP mated with Zeus 3000 pods. Just recently replaced transmission oil and steering fluid coolers due to their age, two per pod. The QSB maintenance manual calls for the gear lube cooler flush, but I can’t seem to locate one. Is it possible that the pods don’t have one?

    Many thanks,

    Yury

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  • August 9, 2021 at 5:17 pm #119225

    Yury
    Participant
    Vessel Name: Sea Ray 450 SB
    Engines: T-Cummins QSB 5.9 480 hp
    Location: Hallandale Beach, Florida
    Country: United States

    Thanks a lot David! That’s what I thought. Stay safe. – Yury

    August 9, 2021 at 3:49 pm #119221

    David Amble
    Participant
    Location: Gold Coast, Queensland
    Country: Australia

    Correct. The gear oil is mostly in the leg (underwater part) and hence is cooled by the surrounding water.
    I presume the QSB manual is generic in that it assumes the engine is connected to a shaft drive gear transmission which would have an oil cooler.

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