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Airbag pressure

Discussion in 'Volvo Forum' started by wspencer, Mar 5, 2023.

  1. Mar 5, 2023 #1
    wspencer

    wspencer Bobtail Member

    1
    0
    Mar 5, 2023
    0
    Helping out my brother on his 2007 vln 670.
    He is getting constant 75psi in the front bags bobtail. Anybody know what the standard pressure on the front bags should be with no load? 75psi seems to be really high with no load in my opinion.
     
    wspencer, Mar 5, 2023
    wspencer, Mar 5, 2023
    #1
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  3. Mar 6, 2023 #2
    Keepforgettingmypassword

    Keepforgettingmypassword Heavy Load Member

    738
    938
    Jan 11, 2022
    0
    I have no idea what you mean. I'm gonna follow and hopefully learn something.
     
    Keepforgettingmypassword, Mar 6, 2023
    Keepforgettingmypassword, Mar 6, 2023
    #2
  4. Mar 9, 2023 #3
    Neilwhayes

    Neilwhayes Bobtail Member

    30
    25
    Jul 8, 2014
    miramichi nb. canada
    0
    When my pressure went up like this, similar range, it was the leaf spring had broken and the air bag was compensating.
     
    Neilwhayes, Mar 9, 2023
    Neilwhayes, Mar 9, 2023
    #3
    flood Thanks this.
  5. Apr 30, 2023 #4
    KB3MMX

    KB3MMX Road Train Member

    3,075
    2,596
    Dec 29, 2014
    Orrstown, PA
    0
    Steer axle should be about 45ish empty and 55-60 loaded for best ride... Height adjustment affects pressure of the front bags.. his must be way outta spec
     
    KB3MMX, Apr 30, 2023
    KB3MMX, Apr 30, 2023
    #4
    Magoo1968 Thanks this.
  7. Apr 30, 2023 #5
    AModelCat

    AModelCat Road Train Member

    29,407
    161,523
    Jul 7, 2015
    Canuckistan
    0
    The pressure is whatever it needs to be to maintain the correct ride height. Either its too high up front, its compensating for a worn/broken part or that's just how it is.
     
    AModelCat, Apr 30, 2023
    AModelCat, Apr 30, 2023
    #5
    KB3MMX Thanks this.
  8. May 5, 2023 #6
    KB3MMX

    KB3MMX Road Train Member

    3,075
    2,596
    Dec 29, 2014
    Orrstown, PA
    0

    Yes, adjusted correctly at gross wt , it should be between 55-60psi.

    If it's much higher than that the ride height is set too high... A common problem that also negatively impacts the ride.
     
    KB3MMX, May 5, 2023
    KB3MMX, May 5, 2023
    #6
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