Air Weigh LoadMaxx User manual

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PN 901-0155-002 R0
Air-Weigh Customer Support: 888-459-3247
LoadMaxx
Installation Guide
Hendrickson Drive Suspensions
Welded Steer and Drive Brackets

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Table of Contents
About LoadMaxx for Hendrickson Suspensions.........................1
About Installation.............................................................................1
Overview..........................................................................................1
Tools Required.................................................................................2
Optional Tools................................................................................2
Installing the Steer Axle Sensor Bracket......................................3
Preparing the Steer Axle Sensor Brackets...............................3
Welding the Bracket......................................................................6
Adding a Protective Spray Paint Coating..................................7
Installing the Drive Axle Sensor Bracket......................................8
Assembling the Bracket to the Jig.............................................8
J-Bracket Placement and Surface Preparation......................10
Welding the J-Bracket.................................................................12
Routing Cables...............................................................................13
Installing the ComLink and Display.............................................14
Preparing the Cab Display for Installation...............................14
Installing the Cab Display...........................................................14
Mounting the ComLink...............................................................15
ConnectingCables.........................................................................16
Power and Ground Table...........................................................16
Securing Cables and Reassembling the Dash......................16

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Installing the Steer Axle Sensor...................................................17
Installing the Drive Axle Sensor...................................................19
Setting the A/D Values..................................................................20
Adjusting the A/D Readings......................................................21
Final Sensor Torque...................................................................22
Steer Axle Cover Installation........................................................23
Limited Warranty...........................................................................25
Procedure for Warranty Claims...................................................26
Notes...............................................................................................27

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About LoadMaxx for Hendrickson
Suspensions
LoadMaxx is a weighing system for vehicles that works by using


that number into weight, which is displayed in the truck cab. Weight
information, including axle group, net, and gross vehicle weights, is
also displayed.
The LoadMaxx scale for vocational vehicles with Hendrickson
suspension includes a dash-mounted display, a ComLink


mounting hardware for the Hendrickson suspension.
Please see the User Guide, included with your scale kit, to calibrate
your scale after installation.
About Installation
Overview
There are three major components of the LoadMaxx scale that you
will install, listed as follows:
• Electronics: dash-mounted display, ComLink module,
power cables and sensor extension cables
• 
only)
• 

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Tools Required

the steer and drive axles.
• Sander/grinder
• 40-grit medium sandpaper
• Chalk or permanent marker
• 22 MM combination wrench
• Torque wrench
• 22 MM socket and socket handle
• Enamel spray paint, any color
• Welder, MIG or ARC
• E7018 welding electrodes for ARC welders
• E70S-3 or E71T-1 welding wire for MIG welders
• C-clamps
• Tape measure
Note: The reusable Installation Jig (sold separately) is required for
this installation.
Optional Tools


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Installing the Steer Axle Sensor
Bracket
Note: This section applies only to scales using the 5817

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this section and see the section on installing the drive axle sensor
(page 6).
Preparing the Steer Axle Sensor Brackets
1. Locate and mark the center of the steer axle.
2. Using chalk or a permanent marker, mark the top of the

total). Clean this area. If the axle is heavily caked with dirt
or grease, use a degreaser such as Brakleen to remove the
worst.
3. Using 40-grit medium sandpaper or a pneumatic grinder,
sand the 6-inch area until nothing remains but bare metal.
We recommend that you partially grind down the mold line as
well.
Marking the Center of the Steer Axle

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4. Re-mark the center of the steer axle.
 
and that no axle paint is left under the pad. If there is any
paint at all that will be touching the brackets, sand until it has
been removed.
6. Once you have prepared the axle, place the bracket


rocking in any direction. If the bracket rocks, sand or grind off

Note: Make sure that the main body of the bracket does not touch
the axle. Only the feet of the bracket should touch the axle.
Sanding the Steer Axle

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7. If the brackets have protective tape on them, remove the tape
from around the bottom of the bracket assembly.
Removing the Protective Plastic Strips
8. Clean the underside of the bracket assembly with one of the
supplied isopropyl alcohol pads.
Cleaning the Bottom of the Bracket Assembly

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Welding the Bracket
Note: Air-Weigh takes no responsibility for damage or failure of the
steer axle due to improper welding.
1. Place the new bracket assembly at the center of the axle.

place. Make sure you leave the alignment tool in the bracket
assembly while welding.
2. Tack weld all 8 corners of the base.
Bracket Assembly Centered on Axle
Bracket Assembly Centered on Axle
Note: Do not operate the vehicle while the alignment tool is still in
place.
TACK WELD LOCATIONS

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Adding a Protective Spray Paint Coating
To prevent steer axle corrosion, we recommend you spray paint
around the base of the bracket.
1. Using any enamel-based spray paint, paint around the base
of the bracket and over the welded section. Paint all bare
metal around the bracket completely.
2. Once the paint is dry, we recommend that you paint all
exposed metal a second time.
Spray Paint Coating
3. Fillet weld a full bead on the front and back edges of each


of the bracket, only the edges indicated below. Air-Weigh
recommends that you use equipment similar to Miller
Shopmaster 300 AC/DC; AMP/VOLT setting of 22; wire
speed of 3.5; and a welding argon gas mixture of 75/25. MIG

the same settings as the Miller Shopmaster noted above.