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2007 w900 brake issue

Discussion in 'Kenworth Forum' started by southtx, Aug 30, 2011.

  1. Aug 30, 2011 #1
    southtx

    southtx Light Load Member

    55
    27
    May 22, 2011
    hondo, tx
    0
    2007 w900 kenworth, when I push the brakew pedal its like the brakes have a delay, the truck starts to slow a little then after about 3 seconds it starts to slow like it should. Any ideas?
     
    southtx, Aug 30, 2011
    southtx, Aug 30, 2011
    #1
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  3. Nov 15, 2011 #2
    Low side

    Low side Bobtail Member

    19
    3
    Oct 18, 2011
    Joplin missouri
    0
    U might check brake adjustment an might also depend on what u driving before all models are different
     
    Low side, Nov 15, 2011
    Low side, Nov 15, 2011
    #2
  4. Nov 16, 2011 #3
    KW Parts Guy

    KW Parts Guy Light Load Member

    230
    78
    Jul 16, 2011
    0
    Have you replaced a relay valve lately? Maybe one is on the way out.
     
    KW Parts Guy, Nov 16, 2011
    KW Parts Guy, Nov 16, 2011
    #3
  5. Nov 29, 2011 #4
    nwtruckingmechanic

    nwtruckingmechanic Bobtail Member

    3
    0
    Nov 29, 2011
    lincoln, rhode island
    0
    i would check your relay valves and it would be good practice to blow down your air tanks every night when you shutdown. water reeks havoc on the rubbers in all the valves in the air system.
     
    Last edited: Nov 29, 2011
    nwtruckingmechanic, Nov 29, 2011
    nwtruckingmechanic, Nov 29, 2011
    #4
  7. Nov 29, 2011 #5
    nwtruckingmechanic

    nwtruckingmechanic Bobtail Member

    3
    0
    Nov 29, 2011
    lincoln, rhode island
    0
    also when was the last time you greased everything?
     
    nwtruckingmechanic, Nov 29, 2011
    nwtruckingmechanic, Nov 29, 2011
    #5
  8. Jan 15, 2012 #6
    t800isx

    t800isx Bobtail Member

    15
    3
    Jan 11, 2012
    Dryden,NY
    0
    I have replaced alot of treadle valves on the newer trucks and also the plunger under the pedal might need to be cleaned up and anti seized
     
    t800isx, Jan 15, 2012
    t800isx, Jan 15, 2012
    #6
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