Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

Peterbilt rough ride

Discussion in 'Peterbilt Forum' started by Bradley trans, Dec 17, 2020.

Page 3 of 4
  1. Dec 22, 2020 #21
    Bradley trans

    Bradley trans Bobtail Member

    12
    16
    Dec 17, 2020
    0
    I put new steers on it and the drives have over 100,000 on them but wearing perfect it seams to be riding worse and worse today it felt like I dumped the suspension air and drove up a creek bed lol if u were to hold a paint stick down with your hand and the other half over the edge of table a flick it that’s what the front end feels like when going over a bump smooth road it’s smooth as silk it’s like the front axle is going nuts or something comes right up through the floor but literally nothing is bad?
     
    Bradley trans, Dec 22, 2020
    Bradley trans, Dec 22, 2020
    #21
    5UG and Rideandrepair Thank this.
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Dec 22, 2020 #22
    Rideandrepair

    Rideandrepair Road Train Member

    17,350
    56,291
    Aug 8, 2015
    0
    Motor mounts ever been changed?
     
    Rideandrepair, Dec 22, 2020
    Rideandrepair, Dec 22, 2020
    #22
  4. Dec 22, 2020 #23
    Bradley trans

    Bradley trans Bobtail Member

    12
    16
    Dec 17, 2020
    0
    No they are original this is about the only thing I haven’t done gonna change them this weekend Peterbilt told me this wouldnt cause what I’m experiencing they said usually just get vibrations. Would I get a bad bounce from this?
     
    Bradley trans, Dec 22, 2020
    Bradley trans, Dec 22, 2020
    #23
    Rideandrepair Thanks this.
  5. Dec 22, 2020 #24
    Rideandrepair

    Rideandrepair Road Train Member

    17,350
    56,291
    Aug 8, 2015
    0
    For sure, every bump, the engine, trans jumps. I changed my 2000 Freightliners 5-6 yrs ago. They were real bad. On a hill, in low, shifter would move, as engine torque caused it to jump up. I used ATRO polyurethane. Replaced them all again last year. They were wore out. I went back with originals. The polys being harder, have a lot of vibration complaints. From my experience they don’t last any longer either. I guarantee you need new ones. Might just be the problem, maybe aggravated by an old Balancing damper. Just guessing, on the damper. The shaking on the cab Definately sound like motor mounts.
     
    Rideandrepair, Dec 22, 2020
    Rideandrepair, Dec 22, 2020
    #24
    5UG and 650cat425 Thank this.
  7. Dec 22, 2020 #25
    Rideandrepair

    Rideandrepair Road Train Member

    17,350
    56,291
    Aug 8, 2015
    0
    I would also make sure the ride heights not set too high.Since it’s much worse bobtailing. Being a new valve, it’s probably holding the adjustment, but I’ve had to re set mine before, after setting it. Make sure you have the proper specs and set it bobtail, double check it after a test drive. Then again hooked to a load.
     
    Rideandrepair, Dec 22, 2020
    Rideandrepair, Dec 22, 2020
    #25
    5UG and 650cat425 Thank this.
  8. Dec 22, 2020 #26
    Bradley trans

    Bradley trans Bobtail Member

    12
    16
    Dec 17, 2020
    0
    Ride heights are set by Peterbilt the motor mounts definitely look like they are due but don’t look like they have been moving at all so I’m gonna change them anyway the weird thing it it will do it in 1st gear idling through a parking lot and even feel it sometimes when getting loaded backed into a dock. It will not do it when the steer axle goes over the bump only when the drives hit it but bounces the front end not the rear when I hook to a empty trailer it still does it bad but feels more weighted down when pulling a load it rides the best and feels even more weighted down. I have owned the trk for little over a year now the first 6 months it rode like a dream the last 6 I have been dealing with this lol
     
    Bradley trans, Dec 22, 2020
    Bradley trans, Dec 22, 2020
    #26
    5UG and Rideandrepair Thank this.
  9. Dec 22, 2020 #27
    Rideandrepair

    Rideandrepair Road Train Member

    17,350
    56,291
    Aug 8, 2015
    0
    Some Trucks have a transmission mount, also on top of trans. Not sure about Pete’s. Just be sure to have the jack or hoist secure. I smashed my finger really bad, almost lost part of it. And I’m always preaching never trust a jack. Last time I did them, I took the oil pan off, braced it real good with blocks.
     
    Rideandrepair, Dec 22, 2020
    Rideandrepair, Dec 22, 2020
    #27
    5UG, Roberts450 and 650cat425 Thank this.
  10. May 25, 2021 #29
    dank4184

    dank4184 Bobtail Member

    3
    2
    Jan 23, 2014
    0
    Did you ever figure this out? I have same issue with my 2015 Pete 389. Leveling valves, shocks etc all changed. Called a suspension guy he said replace the springs. It's only got 500k on it
     
    dank4184, May 25, 2021
    dank4184, May 25, 2021
    #29
    aayluv and airbn5 Thank this.
  11. Mar 4, 2024 #29
    386chris

    386chris Bobtail Member

    6
    2
    May 11, 2023
    San Fernando Valley
    0
    I have a 2014 386 flex air suspension does the same can’t figure it out
     
    386chris, Mar 4, 2024
    386chris, Mar 4, 2024
    #29
  12. May 2, 2024 #30
    Paperlogs

    Paperlogs Bobtail Member

    2
    0
    May 2, 2024
    0
    Anyone ever figure this out mine doing the same thing super rough ride 99 379 low air leaf. Rode like a caddilac now ride like a lumberwagon
     
    Paperlogs, May 2, 2024
    Paperlogs, May 2, 2024
    #30
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 3 of 4