Finally got my Cummins pulled down

Discussion in 'Trucks [ Eighteen Wheelers ]' started by AUSSIE DAVE, May 22, 2010.

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  1. May 22, 2010 #1
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

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    OZ - Brisbane
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    Hi all, finally got my Cummins M11 pulled down ready to start on the inframe rebuild, boy did I have fun trying to make a tool to pull the piston sleeves out, but with persistence and several modifications to the tool, I got all 6 sleeves out YIPPY. So next will be go and buy the kit, clean the block (remove remaining gaskets and grease/sludge) then start by installing new main bearings, and move onto new piston sleeves, pistons etc. I feel much better now that I have finished the tear down. :biggrin_2559::biggrin_2559::biggrin_2559::biggrin_2559:
     
    AUSSIE DAVE, May 22, 2010
    AUSSIE DAVE, May 22, 2010
    #1
    kickin chicken Thanks this.
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  3. May 23, 2010 #2
    earthmover

    earthmover Medium Load Member

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    kepp us updated i have a m11 in my dump:biggrin_25514:
     
    earthmover, May 23, 2010
    earthmover, May 23, 2010
    #2
  4. May 23, 2010 #3
    blanco

    blanco Road Train Member

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    Gwinnett County, GA
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    excellent.. post pics if you get them
     
    blanco, May 23, 2010
    blanco, May 23, 2010
    #3
  5. May 23, 2010 #4
    Rnz520

    Rnz520 Bobtail Member

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    May 4, 2010
    Fredericksburg, VA, USA
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    yes, m11s are very simple engines to work on, you should not have a problem doing one.
     
    Rnz520, May 23, 2010
    Rnz520, May 23, 2010
    #4
  7. May 24, 2010 #5
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

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    No worries mate, i will try and keep u updated, going to finish cleaning engine this weekend and then start on re-assembly the following weekend. ( i work monday to friday so saturday and sunday are for working on my truck)

     
    AUSSIE DAVE, May 24, 2010
    AUSSIE DAVE, May 24, 2010
    #5
  8. May 24, 2010 #6
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

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    Thanks, you got any tips, like what would u use on the sleeve seals, 15/40 or liquid soap?? and on the the bore and pistons and rings 15/40 or 2 stroke oil??

     
    AUSSIE DAVE, May 24, 2010
    AUSSIE DAVE, May 24, 2010
    #6
  9. May 24, 2010 #7
    Rnz520

    Rnz520 Bobtail Member

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    May 4, 2010
    Fredericksburg, VA, USA
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    for all bearings and moving surfaces we use Lubriplate 105 engine assembly grease.
    I dont know if you can get that where you are at but its a great lubricant and keeps wear to almost none during initial cranking and startup before oil pressure is built up.
    15/40 is a fail safe way to go about it in my opinion, its what I would use.
    Go and take as long as possible cleaning everything, if you have a hot parts washer that uses soap try not to use it on internal engine parts, and if you do reclean them with Varsol or another parts washing solution, the problem with the hot soal is that it leaves soap stains, and that causes hot spots and increased friction in internal engine parts.
    I leave this part to your discretion since you have pulled it apart and know the condition and look of the crank, but I always, always, always check my bearing clearances on mains and rods, a lot of the guys at work just torque them to spec and thats it unless it had a bearing failure. The bigger engines are more tolerant to a larger/smaller gap when it comes to that, but I do not see the damage in checking the clearances and making sure they are to spec, it will cost 4 dollars (US) in Plastigauge and maybe an hour or two extra of your time if you do it slowly.
    It is peace of mind, and it being your own engine is more of an incentive to do it. Just make sure you clean the residue as well as you can before you put it together for real.
     
    Rnz520, May 24, 2010
    Rnz520, May 24, 2010
    #7
    AUSSIE DAVE Thanks this.
  10. May 25, 2010 #8
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

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    Plastigauge I take it that this is for checking as per checking piston to valve clearances (put on piston rotate engine etc, etc), but you use it to check bearing to crankshaft instead. Also thanks for the other info very helpfull, P.s I will be useing lucas oil stabiliser as assembly lube on bearings. once again, thanks mate :biggrin_255:
     
    AUSSIE DAVE, May 25, 2010
    AUSSIE DAVE, May 25, 2010
    #8
  11. May 25, 2010 #9
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

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    Feb 21, 2010
    OZ - Brisbane
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    Hi all this is my Kenworth T401 that I am doing the Inframe on, as well as other work, getting her ready to start subcontracting some time this year. it is bogee drive, 18 speed road ranger box, Cummins M11 rated at 400HP, and you can see the other features in the pic.

    [​IMG]">[​IMG][​IMG]
     
    Last edited: May 25, 2010
    AUSSIE DAVE, May 25, 2010
    AUSSIE DAVE, May 25, 2010
    #9
  12. May 25, 2010 #10
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

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    Feb 21, 2010
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    AUSSIE DAVE, May 25, 2010
    AUSSIE DAVE, May 25, 2010
    #10
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