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Where is the Fuel Filter on a D6C 10k

Discussion in 'Dozers' started by NWForest, May 19, 2020.

  1. Tinkerer

    Tinkerer Senior Member

    Joined:
    May 21, 2009
    Messages:
    4,704
    Location:
    On A Riverbank in IL. USA
    All the crap in the fuel tank may be preventing the fuel to flow.
    If you can feel resistance on the down-stroke of the primer pump it should be pumping fuel.
    No fuel should be coming out of whatever you are referring to.
    Crack the injector lines again one at a time. Pump fuel until air bubbles come out with the fuel. Then pump until there are no air bubbles.
    I used to apply air pressure to the fuel tank filler cap. The vent hole.
    I rarely used the primer pump.
    I changed so many fuel filters when I ran a service truck that I knew the (Cat) filter part number for every piece I worked on. It was a bunch of them (machines).
     
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  2. NWForest

    NWForest Member

    Joined:
    Jul 24, 2019
    Messages:
    18
    Location:
    Southern Oregon
    There is a drain hose coming down below the fuel pump. When I build up pressure with the priming pump fuel comes out of that hose. Could that mean the fuel pump is bad?
     
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  3. Bluox

    Bluox Senior Member

    Joined:
    Jun 20, 2010
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    720
    Location:
    WA state
    Not unless it leaks while it's running.
    Bob
     
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  4. D6c10K

    D6c10K Senior Member

    Joined:
    Apr 1, 2008
    Messages:
    584
    Location:
    Iowa, USA
    Assuming you have the sleeve metering fuel pump, the drain is to keep fuel from a leaking pump shaft seal from draining into the engine oil.
    If it's just a little you might be able to put up with it for a while. The danger is if the hose gets plugged it might drain into the engine.
    There's also a second drain hose that comes off the priming hand pump. It has a little needle valve which could be the source of your leak.
     
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  5. dozr

    dozr Well-Known Member

    Joined:
    Dec 15, 2013
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    203
    Occupation:
    excaving
    Location:
    alabama
    i use a shop vac on a empty fuel tank works real well dont have to take tanks off someone on here made a suck bucket would work real well, filters are cheap fuel pumps are not.
     
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  6. NWForest

    NWForest Member

    Joined:
    Jul 24, 2019
    Messages:
    18
    Location:
    Southern Oregon
    The part that I didn’t mention is that being a D6 Cat in the forest of the Pacific Northwest, of course it quit running in a place where only a D6 Cat can go. In terrain that would make it a little difficult to get an air compressor to it.

    Today I finally got a chance to get back up to it. I bled the injectors more thoroughly with the priming pump. And I brought a thinner wrench so I could get it on the injector behind the turbo that I couldn’t before. Fuel comes out of that tube at the bottom of the pump when I pump the priming pump. But If I Crack the injectors it doesn’t come out of that tube if pressure is being released. I’m not sure if that is normal or not.

    After bleeding all cylinders I cranked it and immediately black smoke, it sputtered a little and started running after just a few seconds. It ran as smooth as a new Cat as usual for the next hour while I finished my road. Fuel pressure was back to normal.

    I will check the fuel screen another time when it’s not 95° outside. Then to clean out the fuel tank.

    thanks for all your help everyone.
     
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  7. kshansen

    kshansen Senior Member

    Joined:
    Mar 11, 2012
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    8,001
    Occupation:
    Retired Mechanic in Stone Quarry
    Location:
    Central New York, USA
    Yea! next time it will be in the middle of a mud hole and raining if your luck is anything like mine!
     
  8. dozr

    dozr Well-Known Member

    Joined:
    Dec 15, 2013
    Messages:
    203
    Occupation:
    excaving
    Location:
    alabama
    one sure thing they will never make it easy,my d5b has glass jd stile fitler and spin on forgot how many times be runing good get done with job go to get it , it would quit on ramps,talk about a few bad words. got to where i put one in lowboy truck.