Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › New ReCon QSB 5.9 480 Chirping Serpentine Belt

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  • November 2, 2021 at 12:38 pm #122552

    Bill Desmarais
    Moderator
    Vessel Name: Extremist
    Engines: Cummins 6BTA 370
    Location: Portsmouth, NH
    Country: United States

    Hello forum members.
    I have a chirping serpentine belt at 600 idle rpms.
    Doesn’t seem to be an issue after 17 hrs of running time.

    Anyone with a QSB 5.9 have a “chirper” ?

    Regards, Bill D

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  • November 19, 2021 at 10:23 am #123255

    Bill Desmarais
    Moderator
    Vessel Name: Extremist
    Engines: Cummins 6BTA 370
    Location: Portsmouth, NH
    Country: United States

    I’ve owned five 6BTA 370s.

    I’m new to owning a Tier II QSB 5.9.

    I’m still learning the engine.

    I don’t think I’ve seen an upgrade or need to upgrade a belt tensioner on a new Recon QSB 5.9 ??

    Anyone ???

    November 3, 2021 at 6:56 pm #122615

    J Dragon
    Participant
    Vessel Name: Dragon
    Engines: Cummins 6BTA 5.9 315hp
    Location: MA
    Country: United States

    Does QSB have option for higher tension tensioner as B series does? I upgraded on my B per Tonyā€™s suggestion and it solved my chirp ā€¦

    November 3, 2021 at 5:41 pm #122613

    Fireisland1
    Participant
    Vessel Name: Riverwind
    Engines: cummins QSB 380
    Location: long island n.y.
    Country: usa

    Either that belt has taken a set and is making the tensioner work overtime or the tensioner is not doing itā€™s job. Either way that belt seems lose or out of shape

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