Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › dope on anode threads?

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  • February 13, 2017 at 5:19 pm #15332

    David Hays
    Participant
    Vessel Name: Kinship
    Engines: Cummins QSB 5.9L-380
    Location: Pacific Northwest

    Cummins QSB 5.9L 380 engine.  This boat is relatively new to me and I had the aftercooler serviced by a shop not too long after I took possession.  At that time, the mechanic replaced the engine zincs when reinstalling the aftercooler.  He ended up using some type of thread sealant on the threads. 

    My question is basic, what type of thread sealant can be used if I find that the plugs leak at the specified torque?

     

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  • February 14, 2017 at 2:14 pm #15362

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

    Blue Sealant

    Hercules Megaloc is s very popular blue colored thread sealant…

    February 13, 2017 at 10:46 pm #15339

    David Hays
    Participant
    Vessel Name: Kinship
    Engines: Cummins QSB 5.9L-380
    Location: Pacific Northwest

    Thanks, I will grab some. FWIW the mechanic used some type of blue sealant as well.

    February 13, 2017 at 5:45 pm #15333

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

    Rectorseal

    Hello David. I have used both the yellow (5) and the white (T+2) Rectorseal products. I believe Tony also uses the blue Rectorseal. Any will do you just fine..

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