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N14 Rebuild: Follow me on our rebuild process...

Discussion in 'Trucks [ Eighteen Wheelers ]' started by blanco, Jan 8, 2014.

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  1. Jan 8, 2014 #1
    blanco

    blanco Road Train Member

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    Nov 20, 2009
    Gwinnett County, GA
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    Truck came in with coolant in oil. Pulled valve covers off and this is what we found.

    IMG_20131225_150138_766.jpg

    Time to do some trouble shooting.

    edit:

    N14: 1,100,000.
     
    Last edited: Jan 8, 2014
    blanco, Jan 8, 2014
    blanco, Jan 8, 2014
    #1
    RocketScott and Rocky64 Thank this.
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  3. Jan 8, 2014 #2
    blanco

    blanco Road Train Member

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    Gwinnett County, GA
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    coolant pressure tested with oil pan dropped appears to show liner 4 leaking.. :(

    Here is liner 1 being popped off.

    IMG_20140105_174807_444.jpg
     
    Last edited: Jan 8, 2014
    blanco, Jan 8, 2014
    blanco, Jan 8, 2014
    #2
    Rocky64 Thanks this.
  4. Jan 8, 2014 #3
    blanco

    blanco Road Train Member

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    Gwinnett County, GA
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    No room in shop as this is a back up truck and owner is in no hurry. Original Cummins inframe kit is here. Heads will get rebuilt locally.
     
    blanco, Jan 8, 2014
    blanco, Jan 8, 2014
    #3
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  5. Jan 8, 2014 #4
    blanco

    blanco Road Train Member

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    Gwinnett County, GA
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    PS. I'm sure most of you mechanic guys do this on a daily basis, so I'm just hitting the highlights.
     
    blanco, Jan 8, 2014
    blanco, Jan 8, 2014
    #4
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  7. Jan 8, 2014 #5
    blanco

    blanco Road Train Member

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    Gwinnett County, GA
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    Liner 1 with ugly pitting.

    IMG_20140105_174830_355.jpg
     
    blanco, Jan 8, 2014
    blanco, Jan 8, 2014
    #5
    Rocky64 and Heavyd Thank this.
  8. Jan 9, 2014 #6
    silver dollar

    silver dollar Medium Load Member

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    Jan 31, 2009
    Central North Carolina
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    What causes this pitting? The first pic of liner 4, is that a hole I see near the top? Keep posting I want to follow this. Thanks.
     
    silver dollar, Jan 9, 2014
    silver dollar, Jan 9, 2014
    #6
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  9. Jan 9, 2014 #7
    Inland-Pilot

    Inland-Pilot Light Load Member

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    Jun 23, 2010
    Jackson, Ms
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    Liner pitting is caused by not properly treating coolant with additives that coat the liners. It keeps the exploding air bubbles from attacking the liner metal. That's how that works.
     
    Inland-Pilot, Jan 9, 2014
    Inland-Pilot, Jan 9, 2014
    #7
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  10. Jan 9, 2014 #8
    BAYOU

    BAYOU Road Train Member

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    Beaumont,Tx
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    My buddy just went thru this....
     
    BAYOU, Jan 9, 2014
    BAYOU, Jan 9, 2014
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  11. Jan 14, 2014 #9
    blanco

    blanco Road Train Member

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    Nov 20, 2009
    Gwinnett County, GA
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    Finally got some free time to post pic of liner 4. It has a pin hole due to pitting and the piston was starting to get wore out .. I will upload pic of piston.

    View attachment 60615
     
    blanco, Jan 14, 2014
    blanco, Jan 14, 2014
    #9
  12. Jan 14, 2014 #10
    blanco

    blanco Road Train Member

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    Nov 20, 2009
    Gwinnett County, GA
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    Liner 4 just posted.


    Correct. There is also a train of thought that the radiator needs to be grounded as well to eliminate the electrolysis.
     
    blanco, Jan 14, 2014
    blanco, Jan 14, 2014
    #10
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