Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › Leaky 450c Lift Pump

  • Creator
    Topic
  • April 3, 2023 at 1:41 pm #145888

    JimmyK
    Participant
    Vessel Name: Incognito
    Engines: 2 x 6BTA 370s
    Location: Boston
    Country: US

    450c…one of my lift pumps leaks from under the plunger only when actively depressing the plunger.  No leaks under normal operation.

    I’m assuming this is something as simple as an o-ring.  Has anyone serviced these?

    Thanks.

  • Creator
    Topic
Viewing 1 replies (of 1 total)
  • Author
    Replies
  • April 4, 2023 at 6:48 am #145936

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

    Teach us what you find.. The priming part is separate of the main lift pump.. Should not be scary to take it apart.

  • Author
    Replies
Viewing 1 replies (of 1 total)

You must be logged in to reply to this topic.