Drop axle install part 2

Axle mounted in place while drilling the frame and brackets, because of axle spacing requirements I had to remove the fairing brackets to mount the axle. Those will go back on after some modifications to clear the tires and bracket flange

I installed all of the control valves and air lines required to operate the axle lift and brakes, also installed an air switch under the dash to lock out the drop axle unless there is a trailer connected. Wired in a relay that is controlled by the body control module, the relay provides the ground signal to controller through the air switch and raises the axle when the transmission is shifted into reverse. The shop foreman worked with Navistar to write a program to control the drop axle which I then programmed to the body controller.

Finished up today painting, mounting the fenders, the steps, and toolbox etc...