5th Wheel Pressure Gauge

Discussion in 'Experienced Truckers' Advice' started by Midnightrider1, Jun 9, 2016.

  1. Midnightrider1

    Midnightrider1 Bobtail Member

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    Jun 16, 2013
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    Been a while since I had one of these but I know they can be helpful on scaling your load. Refresh my memory.....what number do you want to be close to as you adjust the tandems??

    Thanks ahead of time!
     
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  3. Ryan423

    Ryan423 Light Load Member

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    On my 13 Cascadia it was the notch above 60. I wish my kw t680 had that gauge.
     
  4. Midnightrider1

    Midnightrider1 Bobtail Member

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    Jun 16, 2013
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    Yeah.....that's what I remember being told the first time.....getting it near 60. Thanks!
     
  5. Ryan423

    Ryan423 Light Load Member

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    You're welcome! I forgot to mention that I'd still scale it out. That gauge is nice in that when the tandems are slid to the point at which the gauge reads at the mark above 60, the drives should be 34000. This can reduce unnecessary reweighs. Good luck!
     
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  6. Midnightrider1

    Midnightrider1 Bobtail Member

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    Jun 16, 2013
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    Exactly!
     
  7. MACK E-6

    MACK E-6 Moderator Staff Member

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    Forgive my ignorance, but what is a "fifth wheel pressure gauge"?:?

    The one that measures the air pressure in your suspension?
     
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  8. supersnackbar

    supersnackbar Road Train Member

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    On my 579, I have the suspension air pressure gauge on the lcd digital display. @MACK E-6, I think it's the same thing they're talking about, just called something else on their truck. Mine is at 34k a needle width below the 70 mark.
     
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  9. MACK E-6

    MACK E-6 Moderator Staff Member

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    That's what I thought.

    But won't this number pretty much vary on every truck?
     
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  10. STexan

    STexan Road Train Member

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    Every truck/suspension system will be different. Need to actually scale and make written notes of the pressure to verify for future reference. Once you get to actual 34k once, and note the pressure, then you know.
     
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  11. supersnackbar

    supersnackbar Road Train Member

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    It shouldn't. Suspensions are pretty much the same from one manufacturer to the next. Same airbags and valves. Maybe a little difference in calibration, but the physics are the same. Like @STexan said, find where yours is at 34k and your set. This truck had a screwed up software glitch before I updated it. My gauge is an lcd display simulation instead of an actual gauge. It use to be 34k was at 140 psi (with a 125 psi cutoff on my compressor). Once I updated it, it reads normal now.
     
    Last edited: Jun 9, 2016
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