Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › Need new alternator

  • This topic has 6 replies, 4 voices, and was last updated 4 years ago by John.
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  • August 4, 2019 at 7:48 am #76285

    raymond gonzalez
    Participant
    Vessel Name: "The Office"
    Engines: cummins qsb 5.9 425 2007 8732
    Location: NYC
    Country: United States

    Tony…rob ..
    One of my alternators is only pushing 11v so its going /gone bad .(tested with my meter )..need to know which one to order from sbmar.
    Here are some pics to help
    Thanks and let me know

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Viewing 6 replies - 1 through 6 (of 6 total)
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  • August 8, 2019 at 6:22 am #76498

    John
    Participant
    Vessel Name: Puffin
    Engines: 270HP 6BTA
    Location: Watch Hill RI
    Country: USA

    Have you considered rebuilding your alternator? Any good alternator/starter motor repair guy can do it. I had my Delco Remy 105 amp alternator rebuilt ($160) to include regulator, diode trio, battery post, and a 160 amp stator. This Delco frame can take a 200 amp stator. In 14 years I’ve had this alternator rebuilt twice. Both times where failures in components due to salt air environment. For the last couple of years, I pull the alternator for Winter storage (Rhode Island).

    August 5, 2019 at 5:55 pm #76378

    raymond gonzalez
    Participant
    Vessel Name: "The Office"
    Engines: cummins qsb 5.9 425 2007 8732
    Location: NYC
    Country: United States

    ok thanks will do Rob

    August 5, 2019 at 5:06 pm #76364

    Rob Schepis
    Forum Moderator
    Vessel Name: Tenacious
    Engines: 6BTA 5.9 330's - "Seaboard Style"
    Location: Long Island, NY
    Country: USA

    Ray, for specific parts/stock inquiries and the like best to call the shop and speak with Kevin….

    August 5, 2019 at 11:30 am #76331

    raymond gonzalez
    Participant
    Vessel Name: "The Office"
    Engines: cummins qsb 5.9 425 2007 8732
    Location: NYC
    Country: United States

    so im assuming that i need a delco 24si 160 1 wire … hinge mount correct ?

    tony do you have those or do i need to look elsewhere ?

    also can i reuse the pulley that i have not on my current alternator ?

    my current alternator does not have that plug that i see the new 24si’s have just has 1 wire foe power and im assuming the other wire is ground ? ( see attached pic )

    August 5, 2019 at 9:06 am #76320

    raymond gonzalez
    Participant
    Vessel Name: "The Office"
    Engines: cummins qsb 5.9 425 2007 8732
    Location: NYC
    Country: United States

    yes tony that looks like it .. im 12v also yes ..

    August 4, 2019 at 11:11 am #76296

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    QSB 5.9 Alternator–Delco 24SI

    You are up so close with the camera, it’s hard to tell for sure. Look at the attached picture — I’d say this is what you have.. A Delco 24SI.. You are 12V, correct?

    Tony

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