STEP 1 - PREPARE THE VEHICLE

With the vehicle on a solid, level surface chock the front wheels. Remove the negative battery cable. Raise the vehicle by the axle and remove the rear wheels. After the removal of the wheels lower the vehicle so the axle rests on jack stands rated for vehicles weight. Remove the negative battery cable.

STEP 2 - PRE-ASSEMBLE THE KIT

Select one air helper spring and one upper bracket from your kit. Install the upper bracket to the air spring by inserting the air helper spring studs into the holes, use two 3/8"-16 flange lock nuts to secure the bracket to the air spring, see Figure “A”. Install the air fitting as shown in Figure “A”. Tighten the air fitting securely to engage the orange thread sealant. Position the elbow so as to point in the anticipated location of the air inflation valve, see Figures “A” and “C”. Fasten the lower bracket to the air helper spring using a 3/8"-16 x 3/4” hex bolt, seeFigure “A”.

STEP 3 - INSTALLING THE ASSEMBLY TO THE VEHICLE

Place the assembly on the driver’s side on top of the axle. Attach the upper bracket to the jounce stop with the 5/16"-18 Jbolt and 5/16"-18 hex nut. See Figures “A” and “B”. Next, insert the nut-on-a-stick through the existing hole in the frame and place it over the hole that is aligned with the hole in the upper bracket. Insert a 3/8"-16 x 1" hex bolt through the bottom of the upper bracket, through the frame rail, and into the nut-on-a-stick. See Figure “A”. Attach the lower bracket to the axle using two 3/8"-16 x 7" carriage bolts, the axle bracket strap and 3/8"-16 flange lock nuts. Place the 4" wire loom over the rear carriage bolt, see Figure “A". Be sure that the upper bracket and the lower bracket are not pinching any lines, it may be necessary to reposition some lines to avoid contact with the brackets. Once the assembly is in place, you must have a minimum of 1/2” clearance around the air spring for proper operation.

STEP 4 – INSTALLATION TO THE PASSENGER’S SIDE ASSEMBLY

Reverse any orientations when assembling and installing the right, or passenger’s side of the vehicle.

STEP 5 – INSTALL THE AIR LINE AND INFLATION VALVE

Uncoil the air line 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 air line 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 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 “C”.

Drill a 5/16" hole and install the air inflation valve using two 5/16" flat washers per valve as supports; see Figure “D”. Run the air line from the air helper spring to the 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. The air line tubing should not be bent or curved sharply as it may buckle. Secure the air line in place with the nylon ties provided. Push the end of the air line into the inflation valve as illustrated; see Figure “D”.

STEP 6 – CHECK 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 air line connection then check to make sure that the air line 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 toward 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 air line, then screw the elbow fitting into the spring one additional turn or until the leak stops. Reinstall the air line and re-inflate 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 manufacturer’’ specification. Raise the vehicle by the axle and remove the jack stands. Lower the vehicle to the ground. Reattach the negative battery cable and remove the wheel chocks from the front wheels. Check again to be sure you have the 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 50 pounds of load for each psi of inflation pressure (per pair). For example, 50 psi of inflation pressure will support a load of 2500 pounds 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.