Heat warped hubs

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by insanityeight, Apr 9, 2020.

  1. insanityeight

    insanityeight Light Load Member

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    Jul 26, 2013
    birmingham al
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    Just bought a new used pete 579 that dealer was using to piggy back there trucks for sale with. I guess it was doing all the stopping but on first load when you brake the truck vibrates pretty dang hard. Is there any cure for a warped drum besides replacing or having it turned?
     
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  3. Chubby Fly

    Chubby Fly Medium Load Member

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    The only thing I can think of if you don’t want to replace or have it cut is to steel one off your buddies truck in the middle of the night while he is sleeping. Either that or just back that slack adjuster off all the way so you don’t use that bad drum. Hope this helps
     
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  4. insanityeight

    insanityeight Light Load Member

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    Yea thats what i figured Where u parking tonight lol
     
  5. Chubby Fly

    Chubby Fly Medium Load Member

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    Hahaha good stuff my friend
     
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  6. Chubby Fly

    Chubby Fly Medium Load Member

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    Do you suspect your steer tire drums where the steering wheel shakes? Or is it more in your seat from the rear drums
     
  7. insanityeight

    insanityeight Light Load Member

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    birmingham al
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    Well it feels like more than one but jacked up one steer and turned wheel and it scrubs in a particular spot and not in others and the hubs look new as well as brakes but have heat cracks in all of them from what I remember
     
  8. Chubby Fly

    Chubby Fly Medium Load Member

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    This is a tough one. I don’t cheap out on front drums and after a months of use, they seem to develop high spots when jacked up and rotating. The rears, I buy cheap drums and they always develop little cracks and high spots but nothing noticeable when braking. Maybe yours is severe enough becuase it was a company truck where drivers don’t downshift and use jakes and do hard long stops. Why do they do this, becuase they are lazy and don’t have to pay for the brakes or replace them.
     
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  9. boneebone

    boneebone Road Train Member

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    I would take it back to where you bought it from and tell them to replace the drum/drums.
     
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  10. baha

    baha Road Train Member

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    The bobtail valve makes alot of the air go to ft. brakes when towing two other truck 0n top of it so taking off ft. drum that you found, and ck that it was on hub centered, then put it back on being sure that its centered on hub this time, then try it out?
     
  11. Chubby Fly

    Chubby Fly Medium Load Member

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    You could pull the wheels off and chew I for any rust or contaminants beetween mating surfaces. Also, I invested in a set of these pins which I think work excellent.
    A-1573
     
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