User's Manual

2
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About RoadTamer
The RoadTamer suspension system and your
vehicle’s original equipment steel spring suspension
operate differently. RoadTamer allows your vehicle to
ride “on air.” It lowers air pressure for lighter loads,
meaning you will have a softer ride when you don’t
need the heavy factory springs.
RoadTamer lowers your vehicle to be approximately
level with the front suspension. The result is a vehicle
altitude very similar to that of a fully loaded vehicle.
The air management system then maintains that rear
suspension height regardless of the load you carry.
Ride Height
RoadTamer gives you optimum ride performance,
regardless of the load. RoadTamer’s air management
system will maintain the vehicle’s ride height within ½”.
You will enjoy a much more comfortable, controllable
and safer ride. The design of RoadTamer is carefully
considered to give you “The Ultimate Suspension
Upgrade.”
Introduction to the RoadTamer System
What You Need to Know About RoadTamer
Vehicle Leveling, Side-to-Side
Vehicles are not always level when they are delivered
from the factory. Installing RoadTamer on your vehicle
does not correct this non-level condition. Before you
install RoadTamer, measure for vehicle levelness on
a fl at surface. After the factory springs have been
removed, use a level to verify that the axle spring
perches are level from side-to-side. If the perches
are not level, you will need to apply a wedge shim
to one side or the other to correct this condition. The
wedge shim is provided with each RoadTamer kit.
More information is provided later in the instruction
manual.
Install your RoadTamer kit and make sure the axle
is level and square with the vehicle frame. Snug, but
DO NOT TORQUE, all fasteners per the directions
provided in this installation manual. Check again to
see if the vehicle is level. If it is not close to as level
as its factory levelness, re-read the installation manual
concerning the use of the wedge shim. You may also
have to loosen all beam connecting bolts, u-bolts,
etc. Re-level the axle to the frame before re-torquing
all fasteners.
Driveline Angles
Driveline angles are factory-set to cancel vibrations
caused by the u-joints. RoadTamer takes this into
consideration when lowering the vehicle to a level
height. However, the factory does not set up all vehicles
to be identical. Many different axle, suspension, and
wheelbase combinations are possible. You will need to
measure the driveline angles and make a calculation
to verify that the driveline cancels correctly. See the
section Checking Driveline Angles toward the back of
the installation manual.