2
MN-601
RoadTamer
Introduction
The purpose of this publication is to assist with the installation, maintenance and
troubleshooting of the SmartAir System.
It is important to read and understand the entire installation guide before beginning installation
or performing any maintenance, service or repair. The information here includes a hardware
list, tool list, step-by-step installation information, maintenance tips, safety information and
a troubleshooting guide.
Air Lift Company reserves the right to make changes and improvements to its products and
publications at any time. Contact Air Lift Company at (800) 248-0892, ext. 1 for the latest
version of this manual.
IMPORTANT SYSTEM INFORMATION
The system is comprised of an Electronic Height Sensor (EHS), a bracket mounted magnet,
solenoid valve, relay, air compressor, and an interconnecting wire harness. This system is
combined with the previously installed air bags.
The EHS is mounted to the vehicle frame and the magnet is mounted to the axle or leaf
spring. When load is added to the vehicle, the magnet rises above the EHS centerline (as
the suspension is compressed). If the magnet maintains this position for a minimum of 25
seconds, the EHS will turn on the compressor, via the relay, adding air to the air bags. Air
is added until the magnet is re-centered restoring the vehicle to its preset ride height.
When load is removed from the vehicle, the magnet falls below the EHS and energizes the
solenoid valve. This allows the air to escape from the air bags until the magnet is re-centered
and the reduction in load is accomodated.
An optional kneeling system can be purchased, which includes a dash mounted rocker
switch. This system works to manually exhaust air from the bags when a lower vehicle is
needed while parking.
NOTATION EXPLANATION
Hazard notations appear in various locations in this publication. Information which is
highlighted by one of these notations must be observed to help minimize risk of personal injury
or possible improper installation which may render the vehicle unsafe. Notes are used to help
emphasize areas of procedural importance and provide helpful suggestions. The following
de
fi
nitions explain the use of these notations as they appear througout this guide.
INDICATES IMMEDIATE HAZARDS WHICH WILL RESULT IN SEVERE PERSONAL
INJURY OR DEATH.
INDICATES HAZARDS OR UNSAFE PRACTICES WHICH COULD RESULT IN SEVERE
PERSONAL INJURY OR DEATH.
INDICATES HAZARDS OR UNSAFE PRACTICES WHICH COULD RESULT IN DAMAGE
TO THE MACHINE OR MINOR PERSONAL INJURY.
Indicates a procedure, practice or hint which is important to highlight.
DANGER
NOTE
WARNING
CAUTION