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Brake Question

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Cummins600, Apr 15, 2013.

  1. Apr 15, 2013 #1
    Cummins600

    Cummins600 Bobtail Member

    26
    8
    May 18, 2011
    Pa
    0
    Hey everyone,

    Have a 2000 Volvo 770 with a 600 ISX. A couple of weekends ago I put all new brakes and drums on the truck and ever since then the truck has been vibrating when coming to a stop. I took all the tires and drums off and knocked the aluminum build up on the hubs hoping the drums would sit even and fix the problem. After doing this, the truck still shakes when braking. Any suggestions out there? When the tires and drums were off I also noticed that the shoes were only hitting the drum with about 50% of the shoe. Thanks!
     
    Cummins600, Apr 15, 2013
    Cummins600, Apr 15, 2013
    #1
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  3. Apr 15, 2013 #2
    BrianE

    BrianE Light Load Member

    164
    79
    Mar 9, 2013
    Livingston Texas
    0
    Have the shoes arched to fit the drum. I'd have the drums checked for being in spec to. One or two might be out of round.
     
    BrianE, Apr 15, 2013
    BrianE, Apr 15, 2013
    #2
  4. Apr 15, 2013 #3
    Scania man

    Scania man Road Train Member

    2,199
    483
    Jul 1, 2011
    Saskatchewan
    0
    Torque the wheel nuts , use a torque bar, tighten the opposites, say start at the top nut the the bottom one etc, your drums can warp if tightened unevenly ! Torquing them should solve the problem, I had that very same problem with a truck a few years back
     
    Scania man, Apr 15, 2013
    Scania man, Apr 15, 2013
    #3
    Heavyd Thanks this.
  5. Apr 16, 2013 #4
    Heavyd

    Heavyd Road Train Member

    7,812
    6,265
    Feb 4, 2009
    0
    Yep, very true. I would also like to add to torque the wheel with the brakes released too. With the brakes applied can cause slight bell-mouthing of the drums which can lead to issues like this. (Just use wheel chocks to hold the truck while torquing.)
     
    Heavyd, Apr 16, 2013
    Heavyd, Apr 16, 2013
    #4
    Scania man Thanks this.
  7. Apr 21, 2013 #5
    Cummins600

    Cummins600 Bobtail Member

    26
    8
    May 18, 2011
    Pa
    0
    Hi guys,

    It turned out to be the wrong set of shoes on the one wheel which caused it to buck when trying to stop. Thanks for the answers!
     
    Cummins600, Apr 21, 2013
    Cummins600, Apr 21, 2013
    #5
    Scania man, Heavyd, silver dollar and 2 others Thank this.
  8. Apr 21, 2013 #6
    eeb

    eeb Heavy Load Member

    731
    268
    Mar 24, 2013
    0
    Thanks for the update, its good to hear what the problem and solution turned out to be and add to our hands-on knowledge base.
     
    eeb, Apr 21, 2013
    eeb, Apr 21, 2013
    #6
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