5008-888 8/05 ©
A Division of KW AUTOMOTIVE North America, Inc. 4
e) Select a location on the vehicle for the air inflation valve. Recommended locations are on the
bumper or the body of the vehicle, but you can mount it anywhere as long as it is in a protected
location where the valve will not be damaged. Be sure to maintain accessibility and clearance
for the air chuck when choosing a location.
f) Drill a 5/16" hole and install the air inflation valve using two 5/16" flat washers and nuts per
valve as supports (Photo 14: Small mounting bracket shown for installation illustration only, not
included in kit). Run the tubing from the “T” fitting to the valve, routing it to avoid direct heat
from the engine and exhaust system. Also, be sure to keep the airline away from sharp edges.
NOTE: The airline tubing should not be bent or curved sharply as it may collapse. Secure the
tubing in place with the nylon ties provided. Push the end of the airline tubing into the inflation
valve.
6. CHECK THE AIR SYSTEM
Once the inflation valve is installed, inflate the air helper springs to 70 P.S.I. and check the
fittings for air leaks with an applied solution of soap and water. If bubbles are detected at a
tubing connection, check to make sure that the tube is cut as square as possible and that it is
pushed completely into the fitting. The tubing can easily be removed from the fittings by
pushing the collar towards the body of the fitting and then pulling out the tube. If a leak is
detected where the brass elbow fitting screws into the spring, remove the tubing, then screw
the elbow into the spring one additional turn or until the leak stops. Re-install the tubing and re-
inflate the air springs and check for leaks as noted above.
7. FINALIZING THE INSTALLATION
a) Re-install wheels and torque lug nuts to the Manufacturer’s specifications.
b) Check that all components and fasteners have been properly installed, tightened and
torqued.
c) Lift vehicle and remove support stands. Carefully lower vehicle to ground.
d) Check brake hoses, cables and other components for any possible interference.
e) Check for air spring to chassis/wheel interference.
f) Immediately test-drive the vehicle in a remote location so that you can become accustomed
to the revised driving characteristics and handling.
g) Check all of the hardware and re-torque at intervals for the first 10, 100, and 1000 miles.
!Before finalizing the installation, check once again to be sure you have proper clearance around the
air springs. With a load on your vehicle and the air helper springs inflated, you must have at least 1/2"
clearance around the air springs. As a general rule, the Air Assist Springs will support approximately 50
Ibs of load for each P.S.I. of inflation pressure (per pair). FOR BEST RIDE use only enough air pressure in
the air helper springs to level the vehicle when viewed from the side (front to rear). This amount will vary
depending on the load, location of load, condition of existing suspension and personal preference.
