Network Computing Devices NCD-6029-3 - Manual (Page 4)

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Once the air helper springs are installed, it is recommended that the vehicle not be lifted by the frame, as over-extension
may occur, resulting in damage to the air helper springs. However, should it become necessary to raise the vehicle by the
frame, deflate both air helper springs completely.
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5 - I
NSTALLATION OF THE PASSENGER
'
S SIDE ASSEMBLY
Reverse any orientations when assembling and installing the right, or passenger side of the vehicle.
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6 - I
NSTALL THE AIR LINE AND THE INFLATION VALVE
Uncoil the air line tubing and cut it into two equal lengths. DO NOT FOLD OR KINK THE TUBING. Try to make the cut as
square as possible. Insert one end of the tubing into the elbow fitting installed in the top of the air helper spring. Push the tubing
into the fitting as far as possible see Figure "A".
Select a location on the vehicle for the air inflation valves. The location can be on the bumper or the body of the vehicle, as
long as it is in a protected location so the valve will not be damaged, but maintain accessibility for the air chuck see Figure "D".
Drill a 5/16" hole and install the air inflation valve using two 5/16" flat washers per valve as supports see Figure "E". Run the
tubing from the air helper spring to the inflation valve, routing it to avoid direct heat from the engine, exhaust pipe, and away from
sharp edges. Thermal sleeves have been provided for these conditions. If a thermal sleeve is required simply slide the sleeve
over the air line tubing to the location requiring protection. The air line tubing should not be bent or curved sharply as it may
buckle. Secure the tubing in place with the nylon ties provided. Push the end of the air line tubing into the inflation valve as
illustrated see Figure "E".
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7 - C
HECK THE AIR SYSTEM
Once the inflation valves are installed inflate the air helper springs to 70 psi and check the fittings for air leaks with an
applied solution of soap and water. If a leak is detected at a tubing connection then 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 first
releasing the air pressure then push the collar towards the body of the fitting and then pulling out the tube. If a leak is detected
where the fitting screws into the spring, remove the tubing by pushing the collar towards the body of the fitting and then pulling
out the tube, then screw the brass fitting into the air spring or until the leak stops. Re-install the tubing and reinflate the air
springs and check for leaks as noted above.
This now completes the installation. Install the wheels and torque the lug nuts to the manufactures specifications. Raise the
vehicle by the rear axle and remove the jack stands and lower the vehicle back onto the ground. Re-attach the positive battery
cable and remove the wheel chocks from the wheels. Before proceeding, 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 helper springs will support approximately 25 lbs. of load for each psi of inflation
pressure (per pair). For example, 50 psi of inflation pressure will support a load of 1250 lbs. per pair of air helper springs.
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.
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Too much air pressure in the air helper springs will result in a firmer ride, while too little air pressure will allow the air helper
spring to bottom out over rough conditions. Too little air pressure will also not provide the improvement in handling that is
possible. TO PREVENT POSSIBLE DAMAGE MAINTAIN A MINIMUM OF 10 psi IN THE AIR HELPER SPRINGS AT
ALL TIMES.
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MIN PRESSURE 5 PSI
MAX PRESSURE (LOADED) 100 PSI
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