Airbag pressure

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

  1. wspencer

    wspencer Bobtail Member

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    Mar 5, 2023
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    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.
     
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  3. Keepforgettingmypassword

    Keepforgettingmypassword Heavy Load Member

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    I have no idea what you mean. I'm gonna follow and hopefully learn something.
     
  4. Neilwhayes

    Neilwhayes Bobtail Member

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    When my pressure went up like this, similar range, it was the leaf spring had broken and the air bag was compensating.
     
    flood Thanks this.
  5. KB3MMX

    KB3MMX Road Train Member

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    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
     
    Magoo1968 Thanks this.
  6. AModelCat

    AModelCat Road Train Member

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    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.
     
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  7. KB3MMX

    KB3MMX Road Train Member

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    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.
     
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