Network Computing Devices 2190 User's Manual
Contents
1. to side as well as from front to back Ifyou would rather havea single valve inflation system your dealer can supply the required T fitting IMPORTANT For your safety and to prevent possible damage to your vehicle do not exceed the maximum load recommended by the vehicle manufacturer GVWR Although your Air Helper Springs are rated at a maximum inflation pressure of 100 psi this pressure may allow you to carry too great a load on some vehicles It is best to have your vehicle weighed once it is completely loaded and compare that weight to the maximum allowed Check your vehicle owner s manual or data plate on driver side door for maximum loads listed for your vehicle When inflating your Air Helper Springs add air pres sure in small quantities checking pressure frequently dur ing inflation The air spring requires much less air volume than a tire and therefore inflates much quicker AIRSPRING 6781 2 UPPERBRACKET 5178 2 LOWERBRACKET 5250 2 FRAMEBRACE LEFT 5249 1 FRAMEBRACE RIGHT 5248 1 18 ft TUBING 0938 1 3 8 16 X 4 HEX BOLT 4 3 8 16 FLANGED LOCK NUT 8 3 8 16 X 3 4 FLANGED HEX BOLT 2 5 16 FLAT WASHER 4 J BOLT 8 5 16 18 FLANGED LOCK NUT 8 HEATSHIELD 1004 1 PUSH TO CONNECT INFLATIONVALVE 3101 2 PUSH TO CONNECTELBOW 3098 2 THERMALSLEEVE 0899 2 NYLON TIES 7 21 8178 12 03 NCD 6037 2 or drivers side of the truck Refer to BRACKET N step 3 for the proper lower bracket alignment 3 8 162. INSTALLATION INSTRUCTIONS Congratulations your new Air Helper Springs are quality products capable of improving the handling and comfort of your vehicle As with all products proper installation is the key to obtaining all of the benefits your kit is capable of delivering Please take a few minutes to read through the instructions to identify the components and learn where and how they are used It is a good idea to start by comparing the parts in your kit with the parts list below The heart of the Air Helper Spring kit is of course the air helper springs Remember that the air helper springs must flex and expand during operation so be sure that there is enough clearance to do so without rubbing against any other part of the vehicle Be sure to take all applicable safety precautions during the installation of the kit The instructions listed in this brochure and the illustrations all show the left or driver s side of the vehicle To install the right side assembly simply follow thesame procedures PARTS LIST Warnine Do not inflate this assembly when it is unrestricted The assembly must be restricted by the suspension or other adequate structure Do not inflate beyond 100 P S I Improper use or over inflation may cause property damage or severe personal injury Your kit includes separate inflation valves and air lines for each air helper spring This will allow you to level your vehicle from side
3. et with the 3 8 16 x 4 hex bolts and 3 8 16 flanged hex nuts see Figures A amp B With the assembly attached to the frame rail the next step is to attach the lower bracket to the jounce pad on the axle housing Center the lower bracket on the jounce pad Use the J bolts and 5 16 18 flanged lock nuts to secure the lower bracket to the jounce pad see Figures A amp B Spin the nuts on as far as possible by hand While making sure that the lower bracket stays centered on the jounce pad tighten each nut two turns at a time with a wrench switching to opposite nuts to ensure that the bracket is mounted evenly on the jounce pad After the installation of the left side assembly is complete re attach the brake line bracket and brake line axle vent tube clip to the frame Important In order for the air spring to function properly there must be a minimum of 1 2 of clearance around the air spring The right side parking brake line must be tied to the brake line bracket on the axle housing to prevent it from interfering with the normal operation of the left side air spring see Figure D STEP 4 INSTALL THE PASSENGER S SIDE ASSEMBLY Follow steps 2 5 for assembly and installation of the passenger s side VALVES assembly Note The use of a heat shield is required on the passenger s side of the vehicle The heat shield will mount between the upper bracket and the air helper spring see Figure E Position the shield halfway bet
4. ientation is perpendicular to the upper bracket When the upper bracket of the air spring assembly is attached to the frame rail the lower bracket should rest in line on top of the axle without twisting the air spring see Figures A amp B STEP 3 INSTALL THE ASSEMBLY TO THE VEHICLE Insert the left side frame brace into the frame rail so that it straddles the ounce bumper brace see Figure A Ensure that the frame brace does not pinch any existing brake electrical or fuel lines that may be inside the frame rail The brake line bracket and brake line axle vent tube clip will have to be held clear to allow installation ofthe frame brace Place the air spring assembly on top of the jounce bumper pad on top of the axle housing Align the air spring over the axle Slide the upper bracket onto the frame rail and frame brace Visually align the holes in the upper bracket with the slots inthe frame brace Itmay be necessary touse a rubber mallet to force the upper bracket onto the frame Mark the frame with a center punch in the center of the holes onthe upper bracket Use the upper bracket as a template to drill two 7 16 mounting holes in the frame rail see Figure A Before drilling the holes make sure all electrical brake and fuel lines are cleared from the path of the drill In order to prevent any damage to these lines it is recommended that a thin piece of wood be placed between the frame rail and the existing lines Attach the upper brack
5. r helper springs will support approximately 50 lbs of load for each psi of inflation pressure per pair For example 50 psi of inflation pressure will support a load of 2500 Ibs 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 NOTE Too muchair pressure in the air helper springs will result ina 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 possible improvement in handling TO PREVENT POSSIBLE DAMAGE MAINTAIN A MINIMUM OF 5 P S I IN THE AIR HELPER SPRINGS ATALL TIMES NOTE 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
6. rs are attachedto the frame directly abovethe axle Remove these bumpers by unbolting from the inside of the frame flange see Figure C This bumper will not be reused with this kit The brake line bracket and brake line axle vent tube clip will need to be loosened and removed to allow installation of the frame brace The brake line bracket is attached to the top flange of the frame with two hex bolts Remove the hex bolts to allow the brake line bracket to be moved far enough to facilitate installation of the frame brace The brake line axle vent tube clip is attached to the top of the upper frame flange with a plastic pin Remove the pin with a panel tool or screw driver see Figure C Pull the clip out of the way of the frame brace STEP 2 PRE ASSEMBLE THE KIT Pre assembly will begin with the left driver s side of the vehicle All pictures depict the installation on the left side of the vehicle unless noted otherwise Select one of the air springs and install the push to connect air fitting in the top threaded hole and tighten securely Tighten the air fitting so as to make contact with the nylon ring and then tighten 1 4 turn to snug fitting No thread sealant is needed Secure the upper bracket to the air spring using 3 8 16 flanged lock nuts Next select a lower bracket and secure to the air spring using a 3 8 16 x 3 4 flanged hex bolt see Figure A Be sure that the lower bracket is attached to the air spring so that the bracket or
7. ties provided Push the end of the air line tubing into the inflation valve see Figure G 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 Using a spray bottle apply a solution of soap and water to the fittings If a leak is detected at a airline tubing connection then check to make sure that the airline tube is cut as square as possible and that it is pushed completely into the fitting The airline tubing can easily be removed from the fittings by exhausting all the pressure in the air springs and then pushing the collar towards the body of the fitting and then with a pull remove the airline tubing Reinstall the tubing and reinflate the air springs and check for leaks as noted above Ifa leak is detected where the air fitting screws into the spring just screw the air fitting into the air spring until the leak stops This now completes the installation Install the wheels and torque the lug nuts to the manufacturer s 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 Before proceeding check once again to be sure you have proper clearance around the air springs With aload on your vehicle and the air helper springs inflated you must have at least 1 2 clearance around the air springs Asa general rule the ai
8. ween the nearest point of Figure F the exhaust pipe to the rubber air spring Ensure that the heat shield will not interfere with the normal operation of the air spring or the vehicle s suspension Do not position the face of the shield directly over the axle as it may contact the axle on AIR LINE full suspension compression S FLAT WASHER q STEP 5 INSTALL THE AIR LINE AND INFLATION VALVE Qr Q Uncoil the air tubing and cut itin two equal lengths DONOTFOLD OR KINK m eA THE TUBING Make the cut as square as possible Insert one end of the tubing INFLATION VALVE i into the push to connect elbow fitting installed in the top ofthe air helper spring BODY OF 7 as far as possible O Selecta location on the vehicle for the air inflation valves The location can be r on the bumper or the body of the vehicle as long as it is in a protected location so ipa dn the valve will not be damaged but still maintain accessibility for the air chuck see FicunE G Figure F Drilla 5 16 hole and install the air inflation valve using two 5 16 flat washers per valve as supports see Figure G Run the tubing 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 tubing in place with the nylon
9. x 4 HEX BOLTS KIT ASSEMBLY DRILL TWO NOTE Both illustrations are of the left BRAKE LINE d T EN 3 8 16 FLANGED LOCK NUT 2 UPPER l a BRACKET 5 16 18 FLANGED HEX NUT 3 8 16 x 3 4 FLANGED HEX BOLT LOW BRACKE ai 2190 6011 KIT TO FRAME ASSEMBLY BRAKE LINE AXLE rd VENT TUBE CLIP FRAME BRACE 3 8 16 FLANGED HEX NUT LEAF STACK J BOLT INSTALLATION LOCATION JOUNCE PAD FRAME PAES J UPPER BRACKET AIR SPRINGS LOWER BRACKET DRIVER S SIDE 7 d BRACKET BRAKE LINE FRONT JOUNCE PAD FicunE B eee PLASTIC PIN BRAKE LINE AXLE VENT TUBE CLIP BRACKET BRAKE LINE J ts JOUNCE BUMPER FicunE C TIE RIGHT PARKING BRAKE LINE TO BRAKE LINE BRACKET ON AXLE Figure D FicunE E SrEP 1 PREPARE THE VEHICLE Remove the positive battery cable With the vehicle on a solid level surface chock the front wheels 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 to support your vehicles weight This installation assumes that there is no load in the bed of the truck Your vehicle is equipped with rubber jounce bumpers The bumpe
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