Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › 480 CE Zincs

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  • December 18, 2016 at 4:22 pm #13781

    jetcap
    Participant

    As I’ve done the maintenance since purchase the only zincs to deteriorate are the bottom aftercooler zincs.  The top aftercooler and heat exchanger zincs never show any sign of sacrifice.  Only calcium like buildup.  Do I need to continue with these or just plug?

     

    Mike

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  • December 19, 2016 at 6:17 pm #13841

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

    All looks pretty normal to me for engine sitting with saltwater in all the components..

     

    Tony

    December 19, 2016 at 5:52 pm #13834

    William Walter
    Participant
    Vessel Name: Positive rate
    Engines: Cummings 480ce
    Location: Long island
    Country: Usa

    Zincs

    just did aftercoolers and heat exchanger s also .noticed same thing.aftercoolers bottom zinc gone so I had put new ones in just before I decided to do the aftercoolers and heat exchanger.uppers weren’t to bad as well as heat exchanger.also 480 ce.bill

    December 18, 2016 at 5:08 pm #13786

    jetcap
    Participant

    Tony,

     

    It’s been 11 months since the aftercoolers were done via your protocol.  Roughly 90 hours.  I do them every two years.  I understand differing wear but I have not seen any deterioration of any zinc other than the bottom aftercooler ones.  They last 3-4 months.

     

    Mike

    December 18, 2016 at 4:58 pm #13784

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

    Mike,

     

    All zincs need to be used.. Just replace as needed–And yes, some last longer that others…..

     

    When was the last time your aftercooler was serviced on the bench per my protocol? Months/ years and hours.

     

    Tony

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