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2007 Coronado extreme driveline vibrations

Discussion in 'Freightliner Forum' started by Tenspeedover, Dec 10, 2014.

Page 1 of 2
  1. Dec 10, 2014 #1
    Tenspeedover

    Tenspeedover Bobtail Member

    2
    1
    Dec 10, 2014
    0
    I have a 2007 Coronado glider kit that has a bad washboard type vibration while taking off under load, this truck has been to countless dealers, and garages without anyone finding anything wrong with it, Lots of money spent just to be told they don't know why it's vibrating everything is good. I have over 5 thousand dollars in driveshafts and yokes , new rears, new tranny, changed tires and rims, drums etc,2 new air ride valves, nothing seems to fix it. If you unhook the rear driveshaft or pull the rear axles the truck drives fine. I cant get the u joint angles right no matter what we do. The freightliner shop manual calls for pinion angles of 2.4 front and 11.3 rear I'm running .9 front and 9.2 rear , i have taken apart and checked my my axle seats and they are 3degree front and a 5.5 degree rear which is factory specs, I don't understand if everything is at factory specs how are the pinion angles being thrown off . I'm hoping someone has had a similar experience with their freightliner I'm also open to any suggestions on things to try. I really like this truck and have well cared for it but it is getting on my last nerve.
    Thanks,
    Daryl
     
    Tenspeedover, Dec 10, 2014
    Tenspeedover, Dec 10, 2014
    #1
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  3. Dec 10, 2014 #2
    poppapump1332

    poppapump1332 Road Train Member

    2,987
    2,462
    Jan 2, 2010
    birdsboro,pa
    0
    They dont call them freightshakers for nothing...
     
    poppapump1332, Dec 10, 2014
    poppapump1332, Dec 10, 2014
    #2
  4. Dec 10, 2014 #3
    baha

    baha Road Train Member

    4,137
    2,834
    Jul 25, 2013
    ga
    0
    You can buy a box of shims for the rear ends to adj. the(tilt) and start changing them around till it gets better, same with air ride HI. just change arm adj till it quits.
     
    baha, Dec 10, 2014
    baha, Dec 10, 2014
    #3
    magoo68 Thanks this.
  5. Dec 11, 2014 #4
    Pool6710

    Pool6710 Medium Load Member

    662
    257
    Aug 10, 2014
    Minnesnowta
    0
    Honestly I'd just drive it. It works and makes money. Not every truck rides like a Cadillac.
     
    Pool6710, Dec 11, 2014
    Pool6710, Dec 11, 2014
    #4
  7. Dec 11, 2014 #5
    snowwy

    snowwy Road Train Member

    19,779
    12,322
    Jul 6, 2009
    0
    some people just can't handle problems some times.

    my FL is goverend at 72. but i keep under 68 because of tire vibration. it's not bad but still gets on my nerves.
     
    snowwy, Dec 11, 2014
    snowwy, Dec 11, 2014
    #5
  8. Dec 11, 2014 #6
    Helowrenchturn2

    Helowrenchturn2 Medium Load Member

    484
    139
    Apr 23, 2013
    0
    Have you looked at the clutch?
     
    Helowrenchturn2, Dec 11, 2014
    Helowrenchturn2, Dec 11, 2014
    #6
  9. Dec 11, 2014 #7
    Tenspeedover

    Tenspeedover Bobtail Member

    2
    1
    Dec 10, 2014
    0
    Yes new clutch fly wheel was turned and checked for balance, the truck is smith going down the road it just vibrates like crazy taking off under load to the point you would think it is going to break something. Mounts are all new also, the only thing anyone finds wrong is bad u joint angles on the rear driveshaft but like I said all the wedges and ride height is at factory specs. Just wondering if anyone else had had this problem.
    Thanks
    daryl
     
    Tenspeedover, Dec 11, 2014
    Tenspeedover, Dec 11, 2014
    #7
    Trubb43 Thanks this.
  10. Dec 12, 2014 #8
    magoo68

    magoo68 Road Train Member

    3,393
    5,381
    Jun 11, 2011
    st malo mb canada
    0
    Had a carrier bearing go out on a t600 it shuddered and shook hard under acceleration .. Has rear rearend been opened to check out bearings inside .. It really sounds like it's rear end or u joint angle if disconnecting drive shaft eliminates shudder/shake
     
    magoo68, Dec 12, 2014
    magoo68, Dec 12, 2014
    #8
  11. Dec 12, 2014 #9
    Mr.X

    Mr.X Heavy Load Member

    737
    596
    Oct 31, 2013
    Spokane, WA
    0
    Broken throughput shaft and/or hammered bearing on front drive axle (I assume they checked the diffs for metal?), carrier bearing, U-Joint, Bad angle on drive shaft, busted rim inside rear. Did they check air ride height when they replaced valves?

    Had an old Pete, air ride. Mule Train that had worse angle than yours between front and rear diffs. Replaced U-joints on that rear drive shaft every 50-70k miles. Last time I replaced them u-joints I drove about 50 miles, stopped, got out of truck and the u-joints were so hot you couldnt touch them. Called wife and she took me to parts store where I picked up a tube of the best hi-temp molly grease they had, it was orange and had the texture of permatex silicone. Stopped the heating problem and them u-joints have lasted me well over 100k miles!
     
    Mr.X, Dec 12, 2014
    Mr.X, Dec 12, 2014
    #9
  12. Dec 18, 2014 #10
    CoronadoDriver

    CoronadoDriver Light Load Member

    182
    30
    Nov 11, 2014
    South Carolina
    0
    Well Backing it in is a monster
     
    CoronadoDriver, Dec 18, 2014
    CoronadoDriver, Dec 18, 2014
    #10
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