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LoadLifter 5000 Series

MN-1053

19

CAUTION

100 PSI (6.9BAR)

Maximum Air Pressure

Minimum Recommended Pressure

5 PSI (.34BAR)

Maximum Air Pressure

Minimum Recommended Pressure

MAINTENANCE GUIDELINES

By following the steps below, vehicle owners will obtain the longest life and best results from 
their air springs.

1.  Check air pressure weekly.
2.  Always maintain normal ride height. Never inflate beyond 100 PSI (6.9BAR).
3.  If the system develops an air leak, use a soapy water solution to check all air line 

connections and the inflation valve core before deflating and removing the air spring.  

FOR SAFETY AND TO PREVENT POSSIBLE DAMAGE TO THE VEHICLE, DO NOT  
EXCEED MAXIMUM GROSS VEHICLE WEIGHT RATING (GVWR), AS INDICATED BY 
THE VEHICLE MANUFACTURER. ALTHOUGH THE AIR SPRINGS ARE RATED AT A 
MAXIMUM INFLATION PRESSURE OF 100 PSI (6.9BAR), THE AIR PRESSURE ACTU-
ALLY NEEDED IS DEPENDENT ON LOAD AND GROSS VEHICLE WEIGHT RATING .

4.  Loaded vehicles require at least 25 PSI (1.7BAR). A “loaded vehicle” refers to a vehicle 

with a heavy bed load, a trailer or both. Never exceed GVWR, regardless of air spring, 
air pressure or other load assist. The springs in this kit will support approximately 40 
pounds (18kg) of load (combined on both springs) for each 1 PSI (.07BAR) 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.

5.  When increasing load, always adjust air pressure to maintain 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.

6.  Always add air to springs in small quantities, checking the pressure frequently. 
7.  Should it be necessary to raise the vehicle by the frame, make sure the system is 

at minimum pressure (5 PSI [.34BAR] ) to reduce the tension on the suspension/
brake components. Use of on-board leveling systems do not require deflation or 
disconnection.

8.  Periodically check the air spring system fasteners for tightness. Also, check the air 

springs for any signs of rubbing. Realign if necessary.

9.  On occasion, give the air springs a hard spray with a garden hose to remove mud, 

sand, gravel or other debris.  

NOTE

Product Use, Maintenance and Servicing

Summary of Contents for LoadLifter 5000 Ultimate

Page 1: ...mum effectiveness and safety please read these instructions completely before proceeding with installation S E R I E S Installation Guide TM MN 1053 021707 ECR 8540 Failure to read these instructions can result in an incorrect installation 2005 10 Ford Super Duty ...

Page 2: ...nylon air lines LoadLifter 5000 Ultimate Plus Stainless steel roll plates braided stainless steel air lines stainless steel air spring mounting hardware Air Lift offers two Ultimate Plus upgrade kits 52300 Braided stainless steel air line and fittings 52301 Stainless steel roll plates air spring mounting hardware braided stainless steel air lines and fittings LoadLifter 5000 Ultimate black powder ...

Page 3: ...ishing the Installation 14 Installing the Air Lines 14 Installing the Heat Shield 15 Finished Installation Photos 16 Before Operating 17 Checking for Leaks 17 Fixing Leaks 17 Installation Checklist 18 Post Installation Checklist 18 Product Use Maintenance and Servicing 19 Minimum and Maximum Pressure 19 Maintenance Guidelines 19 Tuning the Air Pressure 20 Guidelines for Adding Air 20 Troubleshooti...

Page 4: ...F A R E Z Y Z Y CC X B J Installation Diagram Driver s left side shown 3 4 hardware is supplied by the fifth wheel hitch manufacturer Use the 1 2 hardware supplied with this kit if no hardware is supplied by the manufacturer On some models with sway bars under the axle it may be necessary to invert the long carriage bolt Q LoadLifter 5000 Series MN 1053 2 fig 1 ...

Page 5: ...Roll plate silver zinc plated 4 H 58437 Air spring 2 Z 18444 3 8 Flat washer 18 EE 21837 Push to connect fitting 2 FF 17215 3 8 24 x 3 4 Flat head socket cap screw 4 GG 17203 3 8 24 x 7 8 Hex cap screw 4 HH 18427 3 8 Lock washer 4 JJ 10466 Zip ties 6 KK 18411 Star washer 2 LL 21230 Valve cap 2 MM 21233 5 16 Hex nut 4 NN 20086 Air line 1 OO 18501 M8 Flat washer 2 Unique Parts in Each Kit Item Part ...

Page 6: ...m IMPORTANT SAFETY NOTICE The installation of this kit does not alter the gross vehicle weight rating GVWR or payload of the vehicle Check the vehicle s owner s manual and do not exceed the maximum load listed for this 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 tir...

Page 7: ...ll the spacer when attaching the upper bracket If the truck has emission lines running along the inside of the frame rail Fig 3 it will be necessary to relocate those lines as follows Follow the directions in the section Attaching the Assemblies to the Frame for reattaching these lines l Carefully push the line holder out of the frame above the axle Try to minimize damage because it will be reused...

Page 8: ...etween the brace and the frame Figs 1 4 Do not tighten at this time OR Fifth wheel Hitch Plate Not Using Frame Slot If the truck has an aftermarket fifth wheel hitch that has a bracket plate running alongside the frame and it does not have any attaching hardware on the side where the slot in the frame is it will be necessary to drill a 1 2 hole through the plate using the slot in the frame as a te...

Page 9: ...he swivel fitting 1 1 2 turns 3 Insert a 5 16 18 x 3 4 carriage bolt R through the square hole in the lower bracket cup A Make sure to insert the carriage bolt on the flanged side of the bracket Set the assembly onto the lower bracket main plate B making sure the lower bracket cup A is on the flanged side of the bracket Fig 5 4 Flip the assembly over and cap the 5 16 carriage bolt with a 5 16 flat...

Page 10: ...de assemblies fig 7 fig 8 Passenger s right side air spring mounting holes shown When installing on the air spring make sure the bracket edge facing you is on the fitting side of the air spring The fitting should be on the top or this side of the air spring assembly opposite of flanges on lower bracket The flange should be on the opposite side of the air line fitting once the air spring is install...

Page 11: ...ssembly using the holes in the upper bracket designated Figs 10 12 and attach to the air spring with two 3 8 flat washers Z or TT lock washers HH and 3 8 24 x 7 8 hex cap screws GG Torque the hardware to no more than 20 lb ft 27 Nm 9 Set the spacer F over the long carriage bolt with the wide side facing out Fig 12 Repeat the process for passenger s right side assembly Fig 13 fig 10 fig 11 Driver s...

Page 12: ...t side assembly onto the jounce bumper strike plate Fig 15 Raise the axle up just enough to insert the long carriage bolt M that is installed in the upper bracket Figs 10 11 through the existing jounce bumper hole in the bottom of the frame At the same time line up the upper brace previously installed onto the remaining two carriage bolts P in the upper bracket Do this just enough for the carriage...

Page 13: ...ght to the bottom of the frame and the braces tight to the upper bracket tighten the 1 2 or 3 4 hardware previously installed that hold the braces to the frame Torque both sides to 44 lb ft 60Nm Fig 17 8 If equipped with the emissions line previously loosened from the frame insert the line holder post into the L bracket I attached to the front or back leg of the upper left brace C Fig 18 It may be...

Page 14: ... LEFT SIDE FIG 20 DEPENDING ON THE MODEL OF THE TRUCK THE BRAKE LINE MAY GO IN BETWEEN OR BEHIND THE HARD BRAKE LINE ON THE PASSENGER S RIGHT SIDE OF THE AXLE FIG 21 3 Position the U bolt J around the leaf spring assembly and insert it in the hole closest to the leaf spring stack Fig 21 The lower bracket flanges must be locked on the front and rear of the stock U bolts holding the leaf springs to ...

Page 15: ...7 Torque the leaf spring U bolt to 10 lb ft 13Nm Once tight the upper and lower brackets will not be parallel and may look like they are out of alignment This condition is acceptable because of the way the lower bracket and upper bracket mounts are designed Some variance from one unit to another is considered normal Repeat for the opposite side IF NECESSARY SLIGHTLY BEND THE HARD BRAKE LINES AWAY ...

Page 16: ...the recommended location for the Schrader valves is the rear bumper area or license plate MICHIGAN XXX XXX www MICHIGAN gov A B C USE IN Standard Ultimate 7500XL USE IN Plus upgrade kit USE IN Plus combo manuals If a location for the Schrader valve other than the back of the vehicle is chosen it may be necessary to coil the excess air line The braided stainless steel air line cannot be trimmed USE...

Page 17: ...er valve in the chosen location Fig 27 INSTALLING THE HEAT SHIELD 1 Attach the metal heat shield to the exhaust where it is closest to the air spring Slide the air line thermal sleeve over the air line and place it where the air line is closest to the exhaust Fig 28 Good cut Bad cut Vehicle body or bumper Hex nuts Flat washer Star washer Rubber washer Schrader valve Vehicle body or bumper Nylon ai...

Page 18: ...rear Inside view of the passenger s right side Inside view of the driver s left side View of the passenger s right side from the rear 1 The following images show the finished installation of both sides Figs 29 30 31 32 Finished Installation Photos fig 29 fig 30 fig 31 fig 32 ...

Page 19: ... 1 25 4mm off the end of the air line Be sure the cut is clean and square see Fig 26 Reinsert the air line into the push to connect fitting b Check the threaded connection by tightening the swivel fitting another half 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 fo...

Page 20: ...16 1km and recheck for clearance loose fasteners and air leaks Operating instructions If professionally installed the installer should review the operating instructions with the owner Be sure to provide the owner with all of the paperwork that came with the kit 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 34B...

Page 21: ...ther load assist The springs in this kit will support approximately 40 pounds 18kg of load combined on both springs for each 1 PSI 07BAR 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 5 When increasing load always adjust air pressure to maintain normal ride...

Page 22: ... include roll control bounce dive during braking and sponginess Fig 35 Tuning out these problems usually requires an increase in pressure GUIDELINES FOR ADDING AIR 1 Start with the vehicle level or slightly above 2 When in doubt always add air 3 If the front of the vehicle dives while braking increase the pressure in the front air bags if equipped 4 If it is ever suspected that the air bags have b...

Page 23: ...s Look for a kink or fold in the air line Replace any air line that has been kinked FREQUENTLY ASKED QUESTIONS 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 Q Is it necessary to keep air in the air springs at all times ...

Page 24: ...LoadLifter 5000 Series MN 1053 22 Notes ...

Page 25: ...LoadLifter 5000 Series MN 1053 23 Notes ...

Page 26: ...LoadLifter 5000 Series MN 1053 24 Notes ...

Page 27: ...retailer If there is a problem with the price Contact Information Mailing address P O Box 80167 Lansing MI 48908 0167 Shipping address 2727 Snow Road for returns Lansing MI 48917 Phone Toll free 800 248 0892 International 517 322 2144 Email service airliftcompany com Web address www airliftcompany com Limited Warranty and Return Policy Air Lift Company provides a limited lifetime warranty to the o...

Page 28: ...eed Help Contact Air Lift Company Customer Service at 800 248 0892 or email service airliftcompany com For calls outside the U S or Canada dial 517 322 2144 JJC 0118 Thank you for purchasing Air Lift Products the Authorized Installer s choice Air Lift Company 2727 Snow Road Lansing MI 48917 or P O Box 80167 Lansing MI 48908 0167 Printed in the USA ...

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