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Vibration diagnostics

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Trooper13, May 26, 2018.

Page 4 of 6
  1. Dec 30, 2019 #31
    swaan

    swaan Road Train Member

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    What air pressure you run in those steer tires?
     
    swaan, Dec 30, 2019
    swaan, Dec 30, 2019
    #31
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  3. Dec 30, 2019 #32
    Cabinover101

    Cabinover101 Heavy Load Member

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    Towing companies will sometimes drop the drive shaft when there's a trailer attached, but they don't normally mess with the carrier bearing. But glad you replaced yours, they do need replaced sometimes
     
    Cabinover101, Dec 30, 2019
    Cabinover101, Dec 30, 2019
    #32
    Rideandrepair Thanks this.
  4. Dec 30, 2019 #33
    Rideandrepair

    Rideandrepair Road Train Member

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    They drop my driveshaft, and they’ll be buying Me a new set of straps and bolts. Along with labor to install.
     
    Rideandrepair, Dec 30, 2019
    Rideandrepair, Dec 30, 2019
    #33
    Cabinover101 Thanks this.
  5. Dec 30, 2019 #34
    Trooper13

    Trooper13 Light Load Member

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    Casper, WY
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    They told me they dropped the drive line. I wasn't happy but nothing i could do. Probably wrong on my guess but still grasping at straws. Already replaced all brake hardware all around and steer wheel bearings at that time with no effect. First tires were top line Micheline highway tires. Ran perfect wear until vibration started then the weird wear appeared. Normally i follow the recommendation for pressure from tire manufacturer for Max estimated load. Tire shop set the new ones at 88, was running 105 on the last set. I've tried chasing pressure all over and made no difference either. Motor mounts appear fine, nothing to cause a man to want to change those yet, not the kind of thing to run around changing without some good indication like King pins right.
     
    Trooper13, Dec 30, 2019
    Trooper13, Dec 30, 2019
    #34
    Cabinover101 and Rideandrepair Thank this.
  7. Dec 30, 2019 #35
    Rideandrepair

    Rideandrepair Road Train Member

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    I’ve been told, after having drive shaft work done, to install it clocked in the same location. I said I hadn’t marked it. Was told if it vibrates, remove and re install 180 degrees, ( the only other way it can go).
     
    Rideandrepair, Dec 30, 2019
    Rideandrepair, Dec 30, 2019
    #35
    Cabinover101 and Trooper13 Thank this.
  8. Dec 30, 2019 #36
    Cabinover101

    Cabinover101 Heavy Load Member

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    I
    Have posted before lengthy about Tru~balance centering pins which I use. In addition I also use the Counteract balancing beads. Having a truly centered brake drum and wheels will work wonders!!
     
    Cabinover101, Dec 30, 2019
    Cabinover101, Dec 30, 2019
    #36
    Rideandrepair and Trooper13 Thank this.
  9. Dec 30, 2019 #37
    Lyle H

    Lyle H Road Train Member

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    3083119C-04AB-4F66-85D5-87A75F61AD93.png
     
    Lyle H, Dec 30, 2019
    Lyle H, Dec 30, 2019
    #37
    Trooper13 Thanks this.
  10. Dec 31, 2019 #38
    Michael 247

    Michael 247 Heavy Load Member

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    How do you center a wheel and drum
     
    Michael 247, Dec 31, 2019
    Michael 247, Dec 31, 2019
    #38
    Cabinover101 Thanks this.
  11. Dec 31, 2019 #39
    Lyle H

    Lyle H Road Train Member

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    Google “tru balance”.
    There is a poor mans way of doing it too, but the above product is the best.
     
    Lyle H, Dec 31, 2019
    Lyle H, Dec 31, 2019
    #39
    Cabinover101 Thanks this.
  12. Dec 31, 2019 #40
    clausland

    clausland Road Train Member

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    Am following this thread, as it has me intrigued. To clarify, the vibration did not show up until after the rig was towed, correct?

    Just prior to the rig being towed, did you do any work to it and not drive it afterward?

    After it was towed did you drive it, before doing any work to it, and the vibration was there?

    Also, is the vibration there all the time, or only at certain highway speeds?
     
    clausland, Dec 31, 2019
    clausland, Dec 31, 2019
    #40
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