Could my king pins be bad?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 2013Maxx, Jun 13, 2019.

  1. 2013Maxx

    2013Maxx Light Load Member

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    My front axel shakes bad at 45-50mph and my tires are wearing weird. Truck is a 2013 ProStar.. Bad king pins? B924C5CA-4722-4621-A420-3111F43EFD35.jpeg 342BE017-45CF-42A1-9ABF-6D7B8D841EA8.jpeg 531D9077-4D85-43DC-9197-94F01EED8F03.jpeg 6686712B-526B-43B4-A546-4B4CDF53D021.jpeg
     
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  3. RustyBolt

    RustyBolt Road Train Member

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    It's possible. But just as likely, if not more so, alignment, shocks, or out of balance. Or any combination of those.
     
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  4. Bakerman

    Bakerman Road Train Member

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    Jack the front end off the ground, put a bar through the hole of the rim and try and lift it up.

    If you have play up and down then yes, possible you have bad king pins.
     
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  5. Michael 247

    Michael 247 Heavy Load Member

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  6. KB3MMX

    KB3MMX Road Train Member

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    This first !!!
     
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  7. 2013Maxx

    2013Maxx Light Load Member

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    It’s wearing in a river like pattern. It seems to be shaking slightly left to right very fast from 45-50mph.. I'm going to try and get it jacked up tomorrow and check it..
     
  8. little cat 500

    little cat 500 Road Train Member

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  9. RustyBolt

    RustyBolt Road Train Member

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    Ya know, I didn't even look to see if I could make out a brand name in his pics. But it's in plain view. And you may be on to something. Always heard Roadmasters were junk (hit or miss, at best) tires. I know it was rumered that Cooper had those made in China. Not sure if that is the case or not.
     
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  10. Rideandrepair

    Rideandrepair Road Train Member

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    How many miles on tires? If more than 120 k, It may just be time for new ones.
     
  11. InTooDeep

    InTooDeep Donner party survivor

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    Mine did that when stoopid wrench didn't tighten the wheel bearings enough
     
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