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PC78 fuel pump

Discussion in 'Excavators' started by NWH, Apr 17, 2020.

  1. NWH

    NWH Well-Known Member

    Joined:
    Jan 31, 2006
    Messages:
    118
    Location:
    Louisiana
    Can the fuel lift
    pump on a 2008 Komatsu PC78US-6 excavator be replaced without having to buy the entire injection pump assembly ?
     
  2. thepumpguysc

    thepumpguysc Senior Member

    Joined:
    Mar 18, 2010
    Messages:
    6,384
    Occupation:
    Master Inj.Pump rebuilder
    Location:
    Sunny South Carolina
    Yes.. It has a P# on it.. DO NOT SCRAPE IT.. get some paint/gasket remover in a spray can at the parts store or walmart.. spray it on, wait 30 seconds & wipe it off..
    OR u could just remove it & have it rebuilt..& will be back in your hands quicker than ordering a new 1..
    U can get the #'s off the main inj. pump & the fuel shop can find the # of the supply pump THAT WAY.
     
    Vetech63 likes this.
  3. DK88

    DK88 Senior Member

    Joined:
    Jan 19, 2011
    Messages:
    320
    Occupation:
    Field service tech.
    Location:
    Ontario
    like just the hand pumping element???
    since you in there clean the fuel screen inside the banjo fitton on the line from the tank to the lift pump block.
    pull the banjo fitting out and the screen will unscrew from the inside of the bolt.
    DK152200-5420 is the p/n for the hand primer.
     
  4. NWH

    NWH Well-Known Member

    Joined:
    Jan 31, 2006
    Messages:
    118
    Location:
    Louisiana
    I think the part I am referring to is also called the feed pump
     
  5. thepumpguysc

    thepumpguysc Senior Member

    Joined:
    Mar 18, 2010
    Messages:
    6,384
    Occupation:
    Master Inj.Pump rebuilder
    Location:
    Sunny South Carolina
    Feed pump, lift pump, supply pump.. ALL the SAME.. depends on what part of the country ur from.
    Just tell'm its the little pump thats bolted to the side of the main inj. pump..