Volvo 780 Drive axle PSI for max legal weight?

Discussion in 'Questions From New Drivers' started by Midnightrider909, Mar 3, 2021.

  1. Midnightrider909

    Midnightrider909 Road Train Member

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    I just picked up a load that has 40,500 pounds in it and there’s nowhere to get scaled and it looks like most of the weight s toward the front and in the middle so I’m not too worried about the trailer tandem axle weights and I’ve got 53 psi reading on the drive axle airbags. Am I legal to run this load?
     
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  3. kemosabi49

    kemosabi49 Trucker Forum STAFF Staff Member

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    Probably. Any truck I ever drove had to be somewhere around 60 psi, give or take a couple pounds.You need to start writing down what your airbag pressure is at various weights. When you find out the pressure when you are at max weights on the tractor, it will make things a lot easier on you.
     
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  4. Snailexpress

    Snailexpress Road Train Member

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    My rear 34000 with pressure around 56psi. Empty 15 psi
     
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  5. Midnightrider909

    Midnightrider909 Road Train Member

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    Thanks! It looks like anything over 56psi is the danger zone.
     
  6. Snailexpress

    Snailexpress Road Train Member

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    Yes it is.
     
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  7. Allinone777

    Allinone777 Bobtail Member

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    On a Volvo 56-58 psi. And it's very depend on how it's loaded 56psi is a safe number
     
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