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Air bags aren't deflating when button is pressed

Discussion in 'Volvo Forum' started by Death Hauler, Jul 26, 2017.

  1. Jul 26, 2017 #1
    Death Hauler

    Death Hauler Bobtail Member

    31
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    Jul 6, 2017
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    I have a 2006 Volvo VNL D12, when I am dropping a trailer and engage the button that is supposed to let the air out of the air bags there is a hiss of air pressure escaping sound like there should be but the air bags never actually go down. It will just hiss and hiss and hiss but the trailer doesent sit down on the landing gear like it should. Any ideas?
     
    Death Hauler, Jul 26, 2017
    Death Hauler, Jul 26, 2017
    #1
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  3. Jul 26, 2017 #2
    shogun

    shogun Road Train Member

    6,075
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    Doing a regen
    0
    Might be the leveling valve on the tractor. You could try moving the leveling rod up and down to see if it adjusts, it sounds like the switch is working.
     
    shogun, Jul 26, 2017
    shogun, Jul 26, 2017
    #2
    KB3MMX Thanks this.
  4. Jul 27, 2017 #3
    boneebone

    boneebone Road Train Member

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    ^This
     
    boneebone, Jul 27, 2017
    boneebone, Jul 27, 2017
    #3
  5. Dec 21, 2017 #4
    Death Hauler

    Death Hauler Bobtail Member

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    Jul 6, 2017
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    I had the leveling rod and valve replaced today and it still doesn’t drop the bags. Any other ideas?
     
    Death Hauler, Dec 21, 2017
    Death Hauler, Dec 21, 2017
    #4
  7. Dec 21, 2017 #5
    Western flyer

    Western flyer Road Train Member

    2,807
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    Whoever replaced the leveling valve should have
    Checked to make sure it works.
    Unless you done it yourself you shouldn't have left
    The shop without checking it.
     
    Western flyer, Dec 21, 2017
    Western flyer, Dec 21, 2017
    #5
  8. Dec 21, 2017 #6
    Death Hauler

    Death Hauler Bobtail Member

    31
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    Jul 6, 2017
    0
    The main reason I had it replaced was because it broke to the point where the airbags were fully pumped up non stop, so when they returned the truck and it was level again I figured it was fixed. I was in a rush to deliver on time, ran out of time on the e log anyway.
     
    Death Hauler, Dec 21, 2017
    Death Hauler, Dec 21, 2017
    #6
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