57338 Instructions
Contents
1. fig 19 Sway and body roll MN 731 LoadLifter 5000 a Guidelines for Adding Air 1 Start with the vehicle level or slightly above MN 731 When in doubt always add air 3 For motorhomes start with 50 100 PSI in the rear because it can be safely assumed o Al OP Ol that it is heavily loaded If the front of the vehicle dives while braking increase the pressure in the front air bags if equipped If it is ever suspected that the air bags have bottomed out increase the pressure fig 20 Adjust the pressure up and down to find the best ride If the vehicle rocks and rolls adjust the air pressure to reduce movement It may be necessary to maintain different pressures on each side of the vehicle Loads such as water fuel and appliances will cause the vehicle to be heavier on one side fig 21 As much as a 50 PSI difference is not uncommon Bottoming out fg 20 Unlevel Level jig 21 15 LF LoadLifter 5000 Warranty and Returns Policy Air Lift Company warrants its products for the time periods listed below to the original retail purchaser against manufacturing defects when used on catalog listed applications on cars vans light trucks and motorhomes under normal operating conditions for as long as Air Lift manufactures the product The warranty doe2. 031403 ECR 7836 MN 731 Load i U by AIR LIFT Kit 57338 2011 Chevrolet GMC 2500 3500HD Pickups ZWD amp 4 WD INSTALLATION GUIDE For maximum effectiveness and safety please read these instructions completely before proceeding with installation Failure to read these instructions can result in an incorrect installation Replacement Parts and Returns Please do not cannibalize kits for parts Help us avoid waste and order by part number If you need an air spring replacement part please follow these steps Step Contact your dealer and order by part number Download a detailed list at www airlifttcompany com downloads html Step 2 If your dealer does not have the part in stock call Air Lift directly and we can ship you the part you need the same day in the U S or Canada Missing or damaged item Before calling Air Lift customer service please gather the following information e Your receipt Number e Condition the kit was in when you Gross Wt 18 280 Ib 2 purchased it 02 07 05 TEAM inglamagaa kam AAA missing damaged item 57215 Information from the box label 1 Kit number 2 Weight 3 When was the kit packed Replacement Information If you need replacement parts contact the local dealer or call Air Lift customer service at 800 248 0892 Most parts are immediately available and can be shipped the same day Contact Air Lift Company customer service at
3. 800 248 0892 first if e Parts are missing from the kit e Need technical assistance on installation or operation e Broken or defective parts in the kit e Wrong parts in the kit Have a warranty claim or question Contact the retailer where the kit was purchased If it is necessary to return or exchange the kit for any reason If there is a problem with shipping if shipped from the retailer If there is a problem with the price TABLE OF CONTENTS Introduction aha KE BARE Se GREEN KAN ee oe 2 Important Safety Notice ccc eee eens 2 Notation Explanation 1 0 0 aaaea a 2 Installation Diagrams 0 000 eee es 3 Hardware AA a e A 4 preis ca E APA AA AA AA 4 Installing the LoadLifter 5000 System 5 Getting Started eee eee n nes 5 Assembling the Air Spring Assembly eee ees 6 Positioning the Air Spring Assembly on the Axle 7 Attaching the Upper Brackets eee eee 7 Re attaching the Emergency Brake Cable to Frame 8 Attaching the Lower Brackets c eee eee ena 8 Installing the Air Lines eee eee ens 9 Installing the Heat Shield 0 0 cece ee es 11 Checking for Leaks ee eee eee eens 11 FNG LEAK 234 0552 55d eteehtiee geet ees ee erase een tatenaneaes ane es 11 Before Operating cece eee ees 12 Installation Checklist 0 0 0 ee eee eens 12 Post I
4. attachment Tighten securely NOTE It may be necessary to pinch the clamp together with pliers to align the two holes up enough to get over the U bolts Emergency Brake Cable 3 8 Serrated Flange Nut P Emergency Brake Cable Bracket Q jig 10 ATTACHING THE LOWER BRACKETS 1 Position the lower bracket in out to best align the bellows Insert two 3 8 carriage bolts 1 through lower bracket mounting legs fig 11 Lower Bracket M8 Screw and Washer Stock Brake Bracket Carriage Bolt Clamp Bar fig T1 3 8 Nyloc and Washer 8 MN 731 LoadLifter 5000 NOTE NOTE MN 731 KS 2 Insert the lower clamp bar M over the two carriage bolts previously installed and cap with two 3 8 nyloc nuts 1 and flat washers J Torque evenly to 16ftlbs 3 Attach the brake lines that were un bolted from the rear of the axle in the getting started section by attaching them to the lower bracket with the new M8 screws O and flat washers N provided fig 11 Tighten securely 4 Attach the brake cable on the passenger side forward of the axle with the new M8 screw O and flat washer J Tighten securely lt may be necessary to slightly bend this bracket to clear the edge of the lower bracket fig 12 Passenger side shown forward of axle Emergency O lt S brake cable bracket M8 bolt and eo washer ie NG INSTALLING THE AIR LINES 1 Choose a convenient location for mounting th
5. ES IMMEDIATE HAZARDS WHICH WILL RESULT IN SEVERE PERSONAL INJURY OR DEATH INDICATES HAZARDS OR UNSAFE PRACTICES WHICH COULD RESULT IN SEVERE PERSONAL INJURY OR DEATH INDICATES HAZARDS OR UNSAFE PRACTICES WHICH COULD RESULT IN DAMAGE TO THE MACHINE OR MINOR PERSONAL INJURY Indicates a procedure practice or hint which is important to highlight MN 731 LoadLifter 5000 SF Installation Diagram If you have 5th wheel hitch brackets along the side of the frame these U bolts may not be used pia EA F DES 6 J 1 ale oe Ji 2 a O OSOS SN Mie CG ee Casa RIS fig 1 Optional hardware for vehicles equipped with fifth wheel hitches that have frame side plates MN 731 LF LoadLifter 5000 Hardware and Tools Lists HARDWARE LIST TOOLS LIST Item Part 5 8 Description cceeeceseeeeeee Qty B1 1 40 gf 3 e AA Qty A 58437 Air SOG AA PARA 2 5 16 Open end or box Wrench ceeeeseeeeeeees 1 B 21837 90 Swivel Air Fitting manaannsn 2 7 16 Open end or box WYeNCh ccceeeeeeeeeeeees 1 C 11951 Roll Palanas 4 9 16 Open end or box WIeNCh cccsseeeeeeeeeeees 1 D 07276 Upper Bracket Right 1 Ratchet w 9 16 Metric 4 1 2 Deep E 07377 Upper Bracket Left 1 Well Sockets a 1 F 17215 3 8 16 X 75 Flat Hea
6. air line into the air fitting This is a push to connect fitting Simply push the air line into the 90 swivel fitting until it bottoms out 9 16 of air line should be in the fitting MN 731 LoadLifter 5000 MN 731 KS INSTALLING THE HEAT SHIELD 1 Bend tabs to provide a 12 dead air space between exhaust pipe and heat shield fig 16 2 Attach the heat shield to the exhaust pipe using the clamps Bend the heat shield for maximum clearance to the air spring fig 16 7 Dead air space Bend tabs fig 16 CHECKING FOR LEAKS 1 Inflate the air spring to 30 PSI 2 Spray all connections and the inflation valves with a solution of 1 5 liquid dish soap and 4 5 water Spot leaks easily by looking for bubbles in the soapy water 3 After the test deflate the springs to the minimum pressure required to restore the system to normal ride height Do not deflate to lower than 5 PSI 4 Check the air pressure again after 24 hours A 2 4 PSI loss after initial installation is normal Retest for leaks if the loss is more than 5 Ibs FIXING LEAKS 1 If there is a problem with the swivel fitting a Check the air line connection by deflating the spring and removing the line by pulling the collar against the fitting and pulling firmly on the air line Trim 1 off the end of the air line Be sure the cut is clean and square see fig 13 Reinsert the air line into the push to connect fitting b Check the threaded
7. asive debris Troubleshooting Guide 1 Leak test the air line connections the threaded connection into the air spring and all fittings in the control system Inspect the air lines to be sure none are pinched Tie straps may be too tight Loosen or replace the strap and replace leaking components Inspect the air line for holes and cracks Replace as needed 4 Look for a kink or fold in the air line Reroute as needed If the preceding steps do not solve the problem it is possibly caused by a failed air spring either a factory defect or an operating problem Please call Air Lift at 800 248 0892 for assistance MN 731 13 KS LoadLifter 5000 Frequently Asked Questions Tuning the 14 Q Will installing air springs increase the weight ratings of a vehicle No Adding air springs will not change the weight ratings GAWR GCWR and or GVWR of a vehicle Exceeding the GVWR is dangerous and voids the Air Lift warranty Is it necessary to keep air in the air springs at all times and how much pressure will they need The minimum air pressure should be maintained at all times The minimum air pressure keeps the air spring in shape ensuring that it will move throughout its travel without rubbing or wearing on itself Is it necessary to add a compressor system to the air springs No Air pressure can be adjusted with any type of compressor as long as it can produce sufficient pressure to service the sprin
8. connection by tightening the swivel fitting another 1 2 turn If it still leaks deflate the air spring remove the fitting and re coat the threads with thread sealant Reinstall by hand tightening as much as possible and then use a wrench for an additional two turns 2 If there is a problem with the inflation valve a Check the valve core by tightening it with a valve core tool b Check the air line by removing the air line from the barbed type fitting Cut the air line off a few inches in front of the fitting and use a pair of pliers or vice grips to pull twist the air line off of the fitting DO NOT CUT OFF THE AIR LINE COMPLETELY AS THIS WILL USUALLY NICK THE BARB AND RENDER THE FITTING USELESS 3 If the preceding steps have not resolved the problem call Air Lift customer service at 800 248 0892 11 LF LoadLifter 5000 Before Operating INSTALLATION CHECKLIST To be completed by installer Q Clearance test Inflate the air springs to 60 PSI and ensure there is at least 7 clearance around each bellow away from anything that might rub against them Be sure to check the tire brake drum frame shock absorbers and brake cables Q Leak test before road test Inflate the air springs to 60 PSI check all connections for leaks with a soapy water solution See page 11 for tips on how to spot leaks All leaks must be eliminated before the vehicle is road tested Q Heat test Be sure there is sufficient clearance fro
9. d Screw 8 Heavy Duty Dhil anakan Asan 1 G 03962 Lower Bracket a 2 Drill 3 8 and 5 16 Drill Bits very sharp 2 H 11046 LE ela AA NAA PA 4 Crescent Wrench cccccsseeeeesseeeeeeeaeeeeeeeaeeeeeens 1 18435 3 8 16 Nyloc Nut 12 Torque WIENGN napasa daa nahawaan ss kaaa sna SA NAL 1 J 18444 3 8 Flat Washer ccssceeeseeeeeeees 12 Hose Cutter Razor Blade or Sharp Krnife 1 K 17129 3 8 Self Tapping Screws 4 Hoist or Floor Jack cscccceccseseeeeeeeeeeeeneeeeeeeenees 1 L 17142 3 8 16 X 3 5 Carriage Bolts 4 ICU Stands naa GANA 2 M 01851 Camp Baka Aa 2 Safety Glasses ccccseeseecceeeeeececeeseeesneneeeeeaeesees 1 N 18501 M8 Flat Washetl cccceceeeeeeeeeeees 4 Air Compressor or Compressed Air Source 1 O 17449 M8 1 25 X 10 Hex Cap Screw 4 Spray Bottle with Dish Soap Water Solution 1 P 18422 3 8 16 Serrated Flange Lock Nut 1 7 32 Alen Wrong anan paaa add 1 Q 26333 Emergency Brake Cable Bracket 1 R 10466 Me SAD ana AA 6 S 21230 Valve Gap ua 2 T 21233 5 16 Hex Nut 2 U 21234 5 16 Rubber Washel cccseceeeees 2 V 34365 Exhaust Heat Shield Kit 1 W 18411 Star Washer 2 Missing or damaged parts Call Air Lift customer StoP service at 800 248 0892 for a replacement part 4 MN 731 a L
10. e inflation valves Popular locations for the inflation valve are a The wheel well flanges b The license plate recess in bumper c Under the gas cap access door d Through the license plate Whatever the chosen location make sure there is enough clearance around the inflation valves for an air chuck 2 Drill two 5 16 holes to install the inflation valves 3 Cut the air line assembly in two equal lengths fe 123 Good Cut Poor Cut WHEN CUTTING OR TRIMMING THE AIR LINE USE A HOSE CUTTER A RAZOR BLADE OR A SHARP KNIFE A CLEAN SQUARE CUT WILL ENSURE AGAINST LEAKS DO NOT USE WIRE CUTTERS OR SCISSORS TO CUT THE AIR LINE THESE TOOLS MAY FLATTEN OR CRIMP THE AIR LINE CAUSING IT TO LEAK AROUND THE O RING SEAL INSIDE THE ELBOW FITTING FIG 13 a 10 LoadLifter 5000 Vehicle body or PI ne 4 2 bumper 5 16 Flat washer Valve cap 5 16 Hex nut 4 Place a 5 16 nut T and star washer W on the air valve Leave enough of the inflation valve in front of the nut to extend through the hole and have room for the rubber washer U flat washer N and 5 16 nut T and cap There should be enough valve exposed after installation approximately 72 to easily apply a pressure gauge or an air chuck fig 14 Push the inflation valve through the hole and use the rubber washer U flat washer N and another 5 16 T nut to secure it in place Tighten the nuts to secure the as
11. enly in a criss cross pattern to 10ftlbs Repeat for the opposite side Stuff a shop towel between the gas tank and shield to keep washer or nut from falling in between in case they are dropped during installation THE DRIVER SIDE HAS A BRAKE LINE AND A WIRING HARNESS RUNNING ALONG THE INSIDE OF THE FRAME MAKE SURE THE U BOLT IS BETWEEN THESE ITEMS AND THE FRAME DO NOT PINCH THESE ITEMS FIG 8 On the passenger side of some models you may have to bend the heat shield a little to gain access for the u bolt to go over the frame correctly fig 9 For trucks that have fifth wheel hitch brackets along side the frame rail 1 There are holes in the middle of the bracket just forward and behind the jounce bumper mounting cups on the upper bracket fig 1 Once the upper brackets are in position drill two 5 16 holes through the bottom of the frame using the holes as a template and attach the upper brackets using the self tapping screws K Torque all four fasteners to 15ftlbs a LoadLifter 5000 On the passenger side on some models it may be necessary to bend the heat shield slightly for the U bolt to align properly with the upper bracket RE ATTACHING THE EMERGENCY BRAKE CABLE TO FRAME 1 Attach the emergency brake cable removed in the getting started section with the emergency brake cable bracket Q and 3 8 serrated flange lock nut P fig 10 Use the inside forward leg of the u bolt on the driver side for the
12. gs Even a bicycle tire pump can be used but it s a lot of work How long should air springs last If the air springs are properly installed and maintained they can last indefinitely Will raising the vehicle on a hoist for service work damage the air springs No The vehicle can be lifted on a hoist for short term service work such as tire rotation or oil changes However if the vehicle will be on the hoist for a prolonged period of time support the axle with jack stands in order to take the tension off of the air springs Air Pressure Pressure determination comes down to three things level vehicle ride comfort and stability 1 Level vehicle If the vehicle s headlights are shining into the trees or the vehicle is leaning to one side then it is not level fig 17 Raise the air pressure to correct either of these problems and level the vehicle Ride comfort If the vehicle has a rough or harsh ride it may be due to either too much pressure or not enough fig 18 Try different pressures to determine the best ride comfort Stability Stability translates into safety and should be the priority meaning the driver may need to sacrifice a perfectly level and comfortable ride Stability issues include roll control bounce dive during braking and sponginess fig 19 Tuning out these problems usually requires an increase in pressure Bad headlight aim 8 17
13. llation information maintenance guidelines and operating tips Air Lift Company reserves the right to make changes and improvements to its products and publications at any time For the latest version of this manual contact Air Lift Company at 800 248 0892 or visit our website at www airliftcompany com IMPORTANT SAFETY NOTICE The installation of this kit does not alter the Gross Vehicle Weight Rating GVWR or payload of the vehicle Check your vehicle s owner s manual and do not exceed the maximum load listed for your vehicle Gross Vehicle Weight Rating The maximum allowable weight of the fully loaded vehicle including passengers and cargo This number along with other weight limits as well as tire rim size and inflation pressure data is shown on the vehicle s Safety Compliance Certification Label Payload The combined maximum allowable weight of cargo and passengers that the truck is designed to carry Payload is GVWR minus the Base Curb Weight NOTATION EXPLANATION Hazard notations appear in various locations in this publication Information which is highlighted by one of these notations must be observed to help minimize risk of personal injury or possible improper installation which may render the vehicle unsafe Notes are used to help emphasize areas of procedural importance and provide helpful suggestions The following definitions explain the use of these notations as they appear throughout this guide INDICAT
14. m any heat sources at least 6 for air springs and air lines If a heat shield was included in the kit install it If there is no heat shield but one is required call 800 248 0892 Q Fastener test Recheck all bolts for proper torque Axle straps carriage bolt lock nuts should be torqued to 16 ft lbs Re torque after 100 miles U Road test The vehicle should be road tested after the preceding tests Inflate the air springs to 25 PSI 50 PSI if the vehicle is loaded Drive the vehicle 10 miles and recheck for clearance loose fasteners and air leaks LI Operating instructions If professionally installed the installer should review the Product Use Maintenance and Servicing section on page 12 with the owner Be sure to provide the owner with all of the paperwork which came with the kit Technician s Signature Date POST INSTALLATION CHECKLIST Q Overnight leak down test Recheck air pressure after the vehicle has been used for 24 hours If the pressure has dropped more than 5 PSI then there is a leak that must be fixed Either fix the leak yourself or return to the installer for service Q Air pressure requirements understand the air pressure requirements of my air spring system Regardless of load the air pressure should always be adjusted to maintain ride height at all times U Thirty day or 500 mile test understand that must recheck the air spring system after 30 days or 500 miles whichever come
15. nstallation Checklist 2 0 0 0 0 eee ees 12 Product Use Maintenance and Servicing 12 Suggested Driving and Maximum Pressure 0 12 Maintenance Guidelines ccc ee eee ens 13 Troubleshooting Guide 0 0 cc eee eee eens 13 Frequently Asked QuestionS 0 00 cece eee eens 14 Tuning the Air Pressure ee eee eee eee 14 Guidelines for Adding Air 0 0 eee nets 15 Warranty and Return Policy 0000 ee eee eeee 16 Contact Information 0 000 aaa aaa aan 16 KS LoadLifter 5000 Introduction NOTE N The purpose of this publication is to assist with the installation maintenance and troubleshooting of the LoadLifter 5000 air spring kit LoadLifter 5000 utilizes sturdy reinforced commercial grade single or double depending on the kit convolute bellows The bellows are manufactured like a tire with layers of rubber and cords that control growth LoadLifter 5000 kits are recommended for most 3 4 and 1 ton pickups and SUVs with leaf springs and provide up to 5 000 Ibs of oad leveling support with air adjustability from 5 100 PSI The kits are also used in motor home rear kits and some motor home fronts where leaf spring are used It is important to read and understand the entire installation guide before beginning installation or performing any maintenance service or repair The information here includes a hardware list tool list step by step insta
16. oadLifter 5000 Installing the LoadLifter 5000 System GETTING STARTED 1 Raise the frame and support the frame with jack stands Lower the axle as far as it can go 2 Remove the jounce bumpers from the jounce bumper brackets on both sides by prying them out with a pry bar or large screw driver figs 2 amp 3 Jounce bumper in mounting cup Jounce bumper removed 3 Remove the bolt that holds the emergency bracket to the inside of the driver side frame rail figs 4 amp 5 Remove the bolt and discard the wire retaining bracket jig 4 MN 731 a LoadLifter 5000 NANNAHAHHWAA NAAN NN 2 Bolt and pit Ga retaining bracket removed fig 3 4 Remove the three bolts that hold the brake lines to the rear axle jounce bumper strike plates figs 6 amp 7 Driver side rear Remove the bolt holding the brake line to the Jounce Bumper Strike Plate in the rear on both driver and passenger side fig 6 Remove the bolt holding the Emergency brake cable on the front of the passenger side Jounce Bumper Strike Plate fig 7 5 Pull the lines clear of the jounce bumper strike plate on the axle to make room for the lower bracket fig 7 ASSEMBLING THE AIR SPRING ASSEMBLY 1 Seta roll plate C on both ends of the air spring A The radiused round edge of the roll plate will be towards the air spring enabling the air spring to be seated in both roll plates 2 Install the 90 elbow fi
17. om state to state Some states do not allow limitations on how long an implied warranty lasts or allow the exclusion or limitation of incidental or consequential damages The above limitation or exclusion may not apply to you There are no warranties expressed or implied including any implied warranties of merchantability and fitness which extend beyond this warranty period There are no warranties that extend beyond the description on the face hereof Seller disclaims the implied warranty of merchantability Dated proof of purchase required Air Lift 1000 Lifetime Limited LoadController Dual 2 Year Limited RideControl Lifetime Limited Load Controller I 2 Year Limited LoadLifter 5000 Lifetime Limited Load Controller Il 2 Year Limited SlamAir 00ccceeeeeeeeeeeeeees Lifetime Limited SmartAir 2 Year Limited PN 7 Beant eee eee Lifetime Limited Wireless AIR 2 Year Limited Lifestyle 4 Performance 1 Year Limited 8B8BWirelessONE 2 Year Limited LoadController Single 2 Year Limited Other Accessories 2 Year Limited formerly SuperDuty formerly EasyStreet Contact Information If you have any questions comments or need technical assistance contact our customer service department by calling 800 248 0892 Monday through Friday For calls from outside the USA
18. or Canada our local number is 517 322 2144 For inquiries by mail our address is PO Box 80167 Lansing MI 48908 0167 Our shipping address for returns is 2727 Snow Road Lansing MI 48917 You may also contact us anytime by e mail at sales airlifticompany com or on the web at www airlifttcompany com 16 MN 731 LoadLifter 5000 Notes MN 731 a Need Help Contact our customer service department by calling 800 248 0892 Monday through Friday For calls from outside the USA or Canada our local number is 517 322 2144 Register your warranty online at www airliftcompany com warranty PP Air Lift Company 2727 Snow Road Lansing MI 48917 or PO Box 80167 Lansing MI 48908 0167 Toll Free 800 248 0892 Local 517 322 2144 Fax 517 322 0240 www airliftcompany com Thank you for purchasing Air Lift products the professional installer s choice Printed in the USA
19. s first If any part shows signs of rubbing or abrasion the source should be identified and moved if possible If it is not possible to relocate the cause of the abrasion the air spring may need to be remounted If professionally installed the installer should be consulted Check all fasteners for tightness Product Use Maintenance and Servicing Suggested Driving Pressure Maximum Air Pressure 100 PSI FAILURE TO MAINTAIN CORRECT MINIMUM PRESSURE OR PRESSURE PROPORTIONAL TO LOAD BOTTOMING OUT OVER EXTENSION OR RUBBING AGAINST ANOTHER COMPONENT WILL VOID THE WARRANTY 12 MN 731 LoadLifter 5000 KS MAINTENANCE GUIDELINES NOTE By following the steps below vehicle owners will obtain the longest life and best results from their air springs 1 Check the air pressure weekly Always maintain normal ride height Never inflate beyond 100 PSI 3 If you develop an air leak in the system use a soapy water solution 1 5 liquid dish soap and 4 5 water to check all air line connections and the inflation valve core before deflating and removing the air spring FOR YOUR SAFETY AND TO PREVENT POSSIBLE DAMAGE TO YOUR VEHICLE DO CAUTION NOT EXCEED MAXIMUM GROSS VEHICLE WEIGHT RATING GVWR AS INDICATED BY THE VEHICLE MANUFACTURER ALTHOUGH YOUR AIR SPRINGS ARE RATED AT A MAXIMUM INFLATION PRESSURE OF 100 P S I THE AIR PRESSURE ACTUALLY NEEDED IS DEPENDANT ON YOUR LOAD AND GVWR 4 Loaded vehicles require at leas
20. s not apply to products that have been improperly applied improperly installed used in racing or off road applications used for commercial purposes or which have not been maintained in accordance with installation instructions furnished with all products The consumer will be responsible for removing labor charges the defective product from the vehicle and returning it transportation costs prepaid to the dealer from which it was purchased or to Air Lift Company for verification Air Lift will repair or replace at its option defective products or components A minimum 10 00 shipping and handling charge will apply to all warranty claims Before returning any defective product you must call Air Lift at 800 248 0892 in the U S and Canada elsewhere 517 322 2144 for a Returned Materials Authorization RMA number Returns to Air Lift can be sent to Air Lift Company 2727 Snow Road Lansing MI 48917 Product failures resulting from abnormal use or misuse are excluded from this warranty The loss of use of the product loss of time inconvenience commercial loss or consequential damages is not covered The consumer is responsible for installation reinstallation labor charges of the product Air Lift Company reserves the right to change the design of any product without assuming any obligation to modify any product previously manufactured This warranty gives you specific legal rights and you may also have other rights that vary fr
21. sembly Route the air line along the frame to the air fitting on the air spring fig 15 Keep AT LEAST 6 of clearance between the air line and heat sources such as the exhaust pipes muffler or catalytic converter Avoid sharp bends and edges Use the plastic tie straps to secure the air line to fixed non moving points along the chassis Be sure that the tie straps are tight but do not pinch the air line Leave at least 2 of slack to allow for any movement that might pull on the air line l shennan b3 BARBER EE i 8 l li a eutl a LE I UG I i ia l aw Hl I UG A644 PPPPP SAMAAN Ng 8 I Agay i mi I AAAA 444641 Pg P a 3 E I d 40068121 SSS Se Ng a op TEE EAN on An f SSS y 2441111Y 100 p y 1144111 Y pasasaan bi i Ff oo a SaL 1 I pasas ti LAANA NAMAY a Paa Tung 4 I LAAVA keceeeee amp qi keceeeee 4 NANANA ape gel port rrr ttt ttre 1 19 La NANAY UA aaa CE YTTHLY 5 alii AL AAAKA NA KANANANA bag i KAKANAN NANA AWAN I a EAAS ASSA 241411114 Ng cs Pagi 22124111 A pS S8SSNN0M Ng ss ag I pSSSSNNN8M 907444014 I ewe ee eee eee eee He gt I 900404 14 KANG i I sn Ny a Ry 5 INKS a ea aaa ee ge INKS 5 330oooeeq Ng l 7 l l A D30oooeed ea l I l I 1 1 Option BU BSA 3 i Option 2 fig 19 N p IO j yo er a PANA a bk 4 7 Cut off the air line leaving approximately 12 of extra air line A clean square cut will ensure against leaks Insert the
22. t 25 PSI or more A loaded vehicle refers to a vehicle with a heavy bed load a trailer or both As discussed above never exceed GVWR regardless of air spring air pressure or other load assist The springs in this kit will support approximately 40 lbs of load combined on both springs for each 1 PSI of pressure The required air pressure will vary depending on the state of the original suspension Operating the vehicle below the minimum air spring pressure will void the Air Lift warranty When increasing load always adjust the air pressure to maintain the normal ride height Increase or decrease pressure from the system as necessary to attain normal ride height for optimal ride and handling Remember that loads carried behind the axle including tongue loads require more leveling force pressure than those carried directly over the axle Always add air to springs in small quantities checking the pressure frequently 7 Should it become necessary to raise the vehicle by the frame make sure the system is at minimum pressure 5 PSI to reduce the tension on the suspension brake components Use of on board leveling systems do not require deflation or disconnection Periodically check the air spring system fasteners for tightness Also check the air springs for any signs of rubbing Realign if necessary On occasion give the air springs a hard spray with a garden hose in order to remove mud sand gravel or other abr
23. tting B on top of the air spring Tighten finger tight plus 1 and a 2 turns Be careful to only tighten on the metal hex nut Do not over tighten fig 1 6 MN 731 LoadLifter 5000 NOTE NOTE NOTE NOTE NOTE MN 731 KS 3 Install the upper brackets D or E onto the top of the air springs using the 3 8 Flat Head bolts F fig 1 Tighten securely 4 Install the lower brackets onto the air spring assembly using the 3 8 Flat Head bolts The angle portion of the lower bracket will be on the fitting side of the air spring fig 1 POSITIONING THE AIR SPRING ASSEMBLY ON THE AXLE 1 With the suspension hanging set the left and right hand units over the axle jounce bumper strike plates fig 1 The fittings will be on the inside of the frame 2 Position the upper brackets to nest around the Jounce Bumpers that are under the frame fig 1 ATTACHING THE UPPER BRACKETS There are two ways of attaching the upper bracket For trucks that do not have a fifth wheel hitch bracket along side of the frame 1 Insert two u bolts H onto the top of the frame and through the upper bracket mounting holes fig 8 lt may be necessary to raise the axle at this point for the upper bracket to reach the frame Insert the U bolts between the brake line and harness as shown Do not pinch these items between the U bolt and frame fig 8 2 Cap with four 3 8 nyloc nuts 1 and flat washers J Torque u bolts ev
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