LoadMaxx Straight Truck

Air-Weigh onboard scales for straight trucks put an end to the guesswork. Accurate and easy-to-use, our scales are perfect for everything from dump trucks to delivery vans to cement trucks.



Load it once and GO!

  • Accurate to within 300 lbs per axle group
  • Transfer weight¬†data with OBC integration
  • Optional printer for instant weight receipts
  • Built-in warning and target weight alarms
  • Easy to install and operate



FAQ and Resources

Where can I find installation instructions and the user guide?

We have manuals with installation instructions for LoadMaxx straight truck scales. See the links below to view!



I need help troubleshooting my scale!

We recommend you contact our customer support team at 888-459-3247 anytime you need help with your scale.

How do I use my scale?

In order to get an accurate weight with your onboard scale, park your vehicle on level ground with the engine running and the brakes released. Briefly deflate the air suspension and inflate to ride height. Weights are displayed on the easy-to-read digital display.

What are the technical specifications for LoadMaxx?
  • Weights Displayed: Steer, Drive, GVW, and Payload
  • On-the-Ground Weights
  • Calibration: Dual-Point, Pin Protectable
  • Temperature and Altitude Compensation
  • Alarm Outputs: Two, both with warning and overweight thresholds; Pin Protectable
  • Operating Temperatures: 0 deg to +50 deg C; 32 deg to + 122 deg F
  • Trailer Weights: Automatic drop and hook communication between tractor and trailer scales
  • Printer Option (RS-232)
  • J1708 Interface
  • J1939/CAN Interface
  • Inclinometer Option
  • Units: Pounds or Kilograms; user selectable
  • Power: 9 to 32 V dc
How does my scale work?


LoadMaxx works on tractors with air drive suspensions and most trucks with leaf spring steer axles and air suspension drive axles. Air sensors measure pressure in the air bags, and deflection sensors measure flex for axles with leaf spring suspensions. The scale converts the sensor measurements into accurate on-the-ground weights.

When properly calibrated and used, LoadMaxx is accurate to within 300 lbs on each axle group.


What is the warranty at Air-Weigh?


Air-Weigh on-board scales are covered by a 3-year limited warranty. Toll-free customer support is available Monday – Friday, 7am to 5pm Pacific Time at (888) 459-3247.

For product failures due to material or manufacturing defects, Air-Weigh will replace or repair all air suspension components for up to 3 years from shipment date to the end-user Air-Weigh customer. These three-year components include: Displays, ComLinks, Air Sensors, Power Cables, Air Sensor Assemblies, Air Sensor Harnesses, Deflection Sensors, and all other associated external components. Air-Weigh assumes no responsibility for administering warranty claims directly with any third party end users.

The responsibility of Air-Weigh under this warranty is limited to the repair, replacement, or credit of the defective part or assembly.

This warranty does not cover incidental or consequential damage to persons or property caused by use, abuse, misuse, or failure to comply with installation or operating instructions. This limited warranty does not apply to any product that has failed due to accident, abuse, alteration, installation not consistent with printed installation instructions, improper maintenance, improper operation, or as a result of system integration or installation not explicitly approved in writing by Air-Weigh.

Air-Weigh and its resellers shall have no responsibility or liability for damages if the purchaser or any other person alters the vehicle incorporating Air-Weigh products. This limited warranty shall not apply to any product that has been repaired or altered by anyone not employed by Air-Weigh or not operated in accordance with the manufacturer’s printed material delivered with this product.

Air-Weigh hereby expressly disclaims any and all implied warranties of any type, kind of nature whatsoever, and particularly any implied warranty of merchantability or fitness for a particular purpose not expressly stated by Air-Weigh in its printed material delivered with its products.

Some states do not allow the exclusion or limitation of incidental or consequential damages. If such laws apply, the limitations or exclusions contained in the terms and conditions of this Warranty may not apply. This warranty gives you specific legal rights and you may also have other rights, which vary state to state.


Want more information?

Call us at 888-459-3444 at anytime or visit a dealer near you!

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