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engine brake bacame very weak

Discussion in 'Trucks [ Eighteen Wheelers ]' started by chopov78, Apr 12, 2016.

  1. Apr 12, 2016 #1
    chopov78

    chopov78 Light Load Member

    122
    9
    Feb 27, 2010
    illinois
    0
    Volvo 2007 with ISX 500 horse power.
    I like the power of the engine brake on that motor,but month ago start feeling that it became weaker.
    Well this week i drove I 77 north WV and VA ,o Lord what a nightmare 42000 pounds and only 20 or 30% of the engine brake.
    What is happened?
     
    chopov78, Apr 12, 2016
    chopov78, Apr 12, 2016
    #1
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  3. Apr 12, 2016 #2
    strollinruss

    strollinruss Road Train Member

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    Jun 5, 2012
    Montgomery, TX
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    Have the overhead run. They can come out of adjustments just like the valves.
     
    strollinruss, Apr 12, 2016
    strollinruss, Apr 12, 2016
    #2
  4. Apr 12, 2016 #3
    chopov78

    chopov78 Light Load Member

    122
    9
    Feb 27, 2010
    illinois
    0
    is that expensive?I had same problem 4 year ago,and they changed rokers/not sure for spelling/,and was good,well for four years.
     
    chopov78, Apr 12, 2016
    chopov78, Apr 12, 2016
    #3
  5. Apr 12, 2016 #4
    379exhd

    379exhd Road Train Member

    2,925
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    Jun 25, 2012
    rolling through hell
    0
    $350 for an ISX to run the head most places. so no not really too expensive
     
    379exhd, Apr 12, 2016
    379exhd, Apr 12, 2016
    #4
    chopov78 Thanks this.
  7. Apr 14, 2016 #5
    shanman

    shanman Medium Load Member

    361
    956
    Dec 2, 2014
    Silverton, OR
    0
    Check the selonoids also
     
    shanman, Apr 14, 2016
    shanman, Apr 14, 2016
    #5
  8. Apr 14, 2016 #6
    chopov78

    chopov78 Light Load Member

    122
    9
    Feb 27, 2010
    illinois
    0
    do you know where are the solenoids located?
     
    chopov78, Apr 14, 2016
    chopov78, Apr 14, 2016
    #6
  9. Apr 14, 2016 #7
    shanman

    shanman Medium Load Member

    361
    956
    Dec 2, 2014
    Silverton, OR
    0
    Under the valve cover. There are 2 one forward and one back.
    Looks like this
    $_1.JPG
     
    shanman, Apr 14, 2016
    shanman, Apr 14, 2016
    #7
    chopov78 Thanks this.
  10. Apr 15, 2016 #8
    bavarian

    bavarian Heavy Load Member

    730
    785
    Feb 13, 2014
    Winnipeg
    0
    OP, you wanna say that nobody opened the valve cover in four years? No wonder things become expensive. You're way behind in PM.
    I don't know the interval on Cummins, but CAT recommends two years or if you hear something. I do mine every 1 1/2 years.
     
    bavarian, Apr 15, 2016
    bavarian, Apr 15, 2016
    #8
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