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
⌃

Air bag over-inflation

Discussion in 'Peterbilt Forum' started by Money-Mike, Nov 19, 2020.

Page 1 of 2
  1. Nov 19, 2020 #1
    Money-Mike

    Money-Mike Light Load Member

    97
    49
    Sep 27, 2017
    0
    Old 91 Pete day cab hooked to our end dump. All of the sudden the bags over inflated one day coming down from the mountain. We have replaced the leveling valve twice, the rod down to the diff, the bags, and the shocks. It still keeps over-inflating and then constantly has air coming from the exhaust port leading to the gauge going from 90lbs to Cut-out non-stop.

    The "mechanics" at our shop are out of ideas. Anybody got any others?
     
    Money-Mike, Nov 19, 2020
    Money-Mike, Nov 19, 2020
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. Nov 19, 2020 #2
    truckdriver31

    truckdriver31 Road Train Member

    6,998
    8,360
    Sep 18, 2013
    0
    is there big drops of fifth wheel grease on the lever rod on the lever valve
     
    truckdriver31, Nov 19, 2020
    truckdriver31, Nov 19, 2020
    #2
  4. Nov 19, 2020 #3
    Money-Mike

    Money-Mike Light Load Member

    97
    49
    Sep 27, 2017
    0
    Not a drop. If I drop the bags and re-inflate it levels right where it is supposed to. The minute I drive and hit a bump, it starts exhausting but the bags don't drop back down to normal.
     
    Money-Mike, Nov 19, 2020
    Money-Mike, Nov 19, 2020
    #3
  5. Nov 19, 2020 #4
    Crude Truckin'

    Crude Truckin' Alien Spacecraft

    2,440
    6,811
    Oct 22, 2016
    North Dakota, Eh?
    0
    Do you have an overinflate switch in the cab?
     
    Crude Truckin', Nov 19, 2020
    Crude Truckin', Nov 19, 2020
    #4
  7. Nov 19, 2020 #5
    Money-Mike

    Money-Mike Light Load Member

    97
    49
    Sep 27, 2017
    0
    Nope. Just the normal and deflate options
     
    Money-Mike, Nov 19, 2020
    Money-Mike, Nov 19, 2020
    #5
  8. Nov 19, 2020 #6
    AModelCat

    AModelCat Road Train Member

    29,413
    161,603
    Jul 7, 2015
    Canuckistan
    0
    Hoses to the valve connected correctly?
     
    AModelCat, Nov 19, 2020
    AModelCat, Nov 19, 2020
    #6
    Roger McG Thanks this.
  9. Nov 19, 2020 #7
    Money-Mike

    Money-Mike Light Load Member

    97
    49
    Sep 27, 2017
    0
    I can only assume so. Was a direct remove and replace of the leveling valve. Its just doing the same thing the original and 1st replacement were doing.
     
    Money-Mike, Nov 19, 2020
    Money-Mike, Nov 19, 2020
    #7
  10. Nov 19, 2020 #8
    mnmover

    mnmover Road Train Member

    1,237
    1,104
    Apr 5, 2009
    Lichfield MN
    0
    Perhaps remove and replace the leveling valve with the air connections reversed. Did the leveling valve bracket get bent ? measure height of fifth wheel and put a pressure gauge inline at the leveling valve.
     
    mnmover, Nov 19, 2020
    mnmover, Nov 19, 2020
    #8
  11. Nov 19, 2020 #9
    SmallPackage

    SmallPackage Road Train Member

    5,691
    18,195
    Dec 20, 2019
    Marion Texas
    0
    What brand valve or you using? The cheaper all plastic ones are hit and miss on being bad out of the box. I’ve seen one that would only shut off for a hair in the center. Barely/lightly touch it one way or the other and air would flow through it. It would never shut off like that. Neway made the oe valves for Pete and they were the best and longest lasting. More $ but trouble free. You can set them and forget about them.
     
    SmallPackage, Nov 19, 2020
    SmallPackage, Nov 19, 2020
    #9
  12. Nov 19, 2020 #10
    AModelCat

    AModelCat Road Train Member

    29,413
    161,603
    Jul 7, 2015
    Canuckistan
    0
    Installed right side up?
     
    AModelCat, Nov 19, 2020
    AModelCat, Nov 19, 2020
    #10
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

    • Page 1 of 2