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A bounce in my front

Discussion in 'Kenworth Forum' started by Highwolf89, Jun 23, 2014.

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  1. Jun 23, 2014 #1
    Highwolf89

    Highwolf89 Light Load Member

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    Jul 30, 2013
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    I don't know what is going on I am getting a bounce in my front in around 50s mph sometimes 40s. But what is crazy is as soon as I lift my foot off the gas it stops one shop told me it may be my king pins but that does not make sense to me that would not stop bouncing if I lift my foot off the gas... Any ideas ?? Really got me puzzled...
     
    Highwolf89, Jun 23, 2014
    Highwolf89, Jun 23, 2014
    #1
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  3. Jun 23, 2014 #2
    Highwolf89

    Highwolf89 Light Load Member

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    And I changed my shocks to see if that was te problem
     
    Highwolf89, Jun 23, 2014
    Highwolf89, Jun 23, 2014
    #2
  4. Jun 23, 2014 #3
    sourdiesel

    sourdiesel Light Load Member

    117
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    Aug 24, 2011
    warrenton,va
    0
    Check the wheel balance weights may have come off or check wheel bearings for correct end play.
     
    sourdiesel, Jun 23, 2014
    sourdiesel, Jun 23, 2014
    #3
    Highwolf89 Thanks this.
  5. Jun 23, 2014 #4
    maggard359

    maggard359 Medium Load Member

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    Nov 20, 2013
    Florida
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    May be a balance issue. If it has a small window of mph bounce you probably have an out of balance tire. I have had several old trucks with pretty good amount of King pin play but never seen a bounce from them. Not saying they couldn't but I would think it would be all the time if it did. I did have a broke belt in a steer once and it bounced like front end coming off truck at about 20mph only, you could speed up and it would smooth out or slow down.
     
    maggard359, Jun 23, 2014
    maggard359, Jun 23, 2014
    #4
    Highwolf89 Thanks this.
  7. Jun 23, 2014 #5
    Highwolf89

    Highwolf89 Light Load Member

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    Yah my king pins have a little play I know I need to get them done but don't think that would cause a bounce only a away problem I would imagine but I am going to take it to get balanced and see
     
    Highwolf89, Jun 23, 2014
    Highwolf89, Jun 23, 2014
    #5
  8. Jun 23, 2014 #6
    SLANT6

    SLANT6 Road Train Member

    1,094
    1,376
    Dec 3, 2012
    The Nut House
    0
    Tire balance. But... The statement that it stops when you lift off the throttle makes me think it is a U-Joint, driveshaft issue
     
    SLANT6, Jun 23, 2014
    SLANT6, Jun 23, 2014
    #6
    Highwolf89 and KC Guardrail Thank this.
  9. Jun 24, 2014 #7
    Highwolf89

    Highwolf89 Light Load Member

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    What should I check for the drive shaft / u joint ? Am I looking for play?
     
    Highwolf89, Jun 24, 2014
    Highwolf89, Jun 24, 2014
    #7
  10. Jun 24, 2014 #8
    KC Guardrail

    KC Guardrail Light Load Member

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    Dec 7, 2013
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    Check all the u-joints for up and down and side to side play. There shouldn't be any. Check your carrier bearing too.
     
    KC Guardrail, Jun 24, 2014
    KC Guardrail, Jun 24, 2014
    #8
    Highwolf89 Thanks this.
  11. Jun 24, 2014 #9
    Highwolf89

    Highwolf89 Light Load Member

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    Well I found out is my carrier bearing is bad getting it replaced... Thank you everyone for your help really appreciate it .
     
    Highwolf89, Jun 24, 2014
    Highwolf89, Jun 24, 2014
    #9
    SLANT6, KC Guardrail and Dorsey Thank this.
  12. Jul 16, 2014 #10
    Highwolf89

    Highwolf89 Light Load Member

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    Jul 30, 2013
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    Well I got the truck fixed it has been running great with the carrier bearing but today it started it again... The new carrier bearing only has 2k miles on it how could it go bad ? Did they install wrong is there something causing it what should I look for? Any ideas.... So confused on it.
     
    Highwolf89, Jul 16, 2014
    Highwolf89, Jul 16, 2014
    #10
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