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Do my own valve adjustment on Cummins M11

Discussion in 'Ask An Owner Operator' started by giannid, Dec 7, 2015.

  1. Dec 7, 2015 #1
    giannid

    giannid Light Load Member

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    Dec 6, 2015
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    Got to have at least 3000 hours since my valves were adjusted and thinking of doing the job myself. Dealer says it's about $350 to do and extra if I need a gasket. Problem is dealer is almost an hour away, truck has to be cold for adjustment and I'll be there forever if I wait for it. Has anyone done the valves on one of these? Looks like all I need to take off is the air cleaner to get good access. Have done valves before on other diesels just not this one. I don't have the manual though.
     
    giannid, Dec 7, 2015
    giannid, Dec 7, 2015
    #1
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  3. Dec 7, 2015 #2
    1johnb

    1johnb Medium Load Member

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    I would not recommend doing it with out some type of manual. You will need to locate the timing marks. 1 on the front cover and 3 on the accessory drive pulley. You set a cylinder at each mark It will require a minimum of 4 complete revolutions to compete
     
    1johnb, Dec 7, 2015
    1johnb, Dec 7, 2015
    #2
    Dominick253 Thanks this.
  4. Dec 7, 2015 #3
    rank

    rank Road Train Member

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    Did you try you tube? That Rawze guy has some videos posted on how to do some big block Cummins. I can't speak to how good are tho
     
    rank, Dec 7, 2015
    rank, Dec 7, 2015
    #3
  5. Dec 7, 2015 #4
    giannid

    giannid Light Load Member

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    Figured I'd ask here first. Probably should try and round up a manual. Maybe I can get someone to scan and email me the pages I need.
     
    giannid, Dec 7, 2015
    giannid, Dec 7, 2015
    #4
  7. Dec 7, 2015 #5
    Snailexpress

    Snailexpress Road Train Member

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    Try cummins quickserve.com. Not sure they have manuals for M 11
     
    Snailexpress, Dec 7, 2015
    Snailexpress, Dec 7, 2015
    #5
  8. Dec 7, 2015 #6
    Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Check out RAWZE on UTUBE. Step by step instructions.

     
    Dave_in_AZ, Dec 7, 2015
    Dave_in_AZ, Dec 7, 2015
    #6
  9. Dec 7, 2015 #7
    AModelCat

    AModelCat Road Train Member

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    This is a general procedure that I use for inline 6 diesels. I usually set #1 at TDC, set half the valves that are on base circle of the cam (you can tell they are in base circle because they are the only ones that will "rock"). Then I bar the engine over 1 complete revolution back to TDC on #1, then set the remaining valves. I've never had an M11 opened up but I've never had an issue doing it that way on any other engine.
     
    AModelCat, Dec 7, 2015
    AModelCat, Dec 7, 2015
    #7
    Dominick253 Thanks this.
  10. Dec 7, 2015 #8
    giannid

    giannid Light Load Member

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    Dec 6, 2015
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    He say's that you need a dial torque wrench for the injector setting. Unfortunately I don't have one of those. I'm going to either have to see if someone has one to borrow or buy one if they're not too much. I believe the ISX is basically the same as the m11.
     
    giannid, Dec 7, 2015
    giannid, Dec 7, 2015
    #8
  11. Dec 7, 2015 #9
    DaveLV

    DaveLV Light Load Member

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    Sep 18, 2015
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    No the isx is not anything like an M11. The big difference you should see when you get the valve cover off..no visible cams on the M11 and 2 on the isx. Locate the timing marks on the front and the lash specs on the valve cover...better yet call Cummins and have them email you the sequence last thing you want is a valve to smack a piston.
     
    DaveLV, Dec 7, 2015
    DaveLV, Dec 7, 2015
    #9
    KenworthGuyNH Thanks this.
  12. Dec 14, 2015 #10
    Dryver

    Dryver Road Train Member

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    Pay the dealer to do it and watch them. Do it yourself next time. Big risk of a F*** up to save $350, not me.
     
    Dryver, Dec 14, 2015
    Dryver, Dec 14, 2015
    #10
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