Kenworth T800 Bouncing Front Driver Wheel

Discussion in 'Kenworth Forum' started by mdrake67, Jan 25, 2021.

  1. mdrake67

    mdrake67 Bobtail Member

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    Jan 13, 2020
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    I have a 2006 Kenworth t800, It has a significant bounce in the front between 30 and 40 mph, which is way worse while braking. It doesnt bounce any other time than between 30 and 40 mph accelerating or braking. Before or after this speed no issues. At 60 mph it drives like its on glass. Ive had someone drive next to me and watch the front tires on each side and its only the driver side wheel bouncing. Passenger side smooth as silk. We have had new tires installed, spin balanced wheels and tires, new shocks, new drums, new brakes, new bearings and seals pretty much everything is brand new.
     
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  3. ibcalm19

    ibcalm19 Heavy Load Member

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    Nov 30, 2015
    Pennsylvania
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    Have you looked at the leaf spring & king pin on driver side?
     
  4. mdrake67

    mdrake67 Bobtail Member

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    Jan 13, 2020
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    We have, king pins have no play are well greased and the leafs seem to be okay. What would be deciding factors on a bad leaf spring? What would I be looking for?
     
  5. AModelCat

    AModelCat Road Train Member

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    Jul 7, 2015
    Canuckistan
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    If its bouncing, something is out of balance. I highly doubt its a front spring. Is the rim worn where it seats to the hub? What about the tabs on the hub the rim seats on?
     
  6. kwcam

    kwcam Light Load Member

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    Dec 29, 2012
    at the shop
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    Could be spring pin and bushing issue, are they the threaded/grease type pin or rubber bushing type. the threaded ones can seize and cause this problem.
     
  7. mdrake67

    mdrake67 Bobtail Member

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    Jan 13, 2020
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    No, the rim and tire balance out at 0 and the hub tabs and wheel seat perfectly
     
  8. mdrake67

    mdrake67 Bobtail Member

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    Jan 13, 2020
    0
    Hmm, interesting ill look into the bushings and pins
     
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