Volvo Air Suspension Parameter

Discussion in 'Volvo Forum' started by Bakhtiyar, May 7, 2020.

  1. Bakhtiyar

    Bakhtiyar Bobtail Member

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    Feb 8, 2020
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    Hello Guys

    anyone does know how can I increase lifting bags for rear axles of volvo FH12 2005 by TechTool ?

    Thanks
     
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  3. Snailexpress

    Snailexpress Road Train Member

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    If your truck has electronic control suspension. You can change height sensor calibration but it will change driveline and axle angle. Why you need to change ride height?
     
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  4. Bakhtiyar

    Bakhtiyar Bobtail Member

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    Feb 8, 2020
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    Thank you for your reply

    Really driver want to change it because when I return the rear air bag to zero level it will come down more for this reason he want to hieght small millimeters
     
  5. Snailexpress

    Snailexpress Road Train Member

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    I don't know Volvo FH but you was warned about drive line and pinion angles. First will be destroyed radial springs in clutch, then pinion seals and bearings. Drive tires, fuel mileage, driver fatigue. Drive line vibration literally will destroy whole truck.
     
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  6. Bakhtiyar

    Bakhtiyar Bobtail Member

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    Feb 8, 2020
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    Thanks for your advice...
     
  7. KB3MMX

    KB3MMX Road Train Member

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    In other words... Leave it the #### alone lololol
     
  8. Snailexpress

    Snailexpress Road Train Member

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    Is this particular truck single drive axle or tandem? And leveling valve is one for both axles or there two of them on each axle?
     
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  9. Bakhtiyar

    Bakhtiyar Bobtail Member

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    Feb 8, 2020
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    It is single drive axle with one leveling valve
     
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