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Old 04-09-2017, 07:44 AM   #3
porky69
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Join Date: Aug 2011
Location: Coaldale
Posts: 89
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Using air pressure in the suspension to gauge axle load is actually fairly accurate once you have a reference point, for example on every Peterbilt I drove with Low Air-leaf suspension 72psi is 17,000kg (37,500lb)(which is Canadian tandem drive axle max weight), I used to haul grain/feed/fertilizer from farms in the middle of nowhere and could get my gross weight within +/- 500lbs if I had fairly flat ground.

If you really want to get exact there are specially calibrated air gauges that are tuned to your unit and can get you within +/-100lbs.
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2007 Haulmark 3329DS, Freightliner Coronado Chassis, 515hp Detroit, Meritor Freedomline 12speed Autoshift, 10kw Generator, In-motion Satellite.
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