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Troubleshooting Guide

LoadLifter 5000 Series

MN-1047

16

PROBLEM

CAUSE

SOLUTION

System won’t maintain pressure 
overnight.

Improperly installed air line, air line has 
holes or cracks.

Leak test the air line connections, the 
threaded connection into the air spring, and all 
fittings in the control system.

Air spring or air line leak. 

Fitting seal or air line is compromised.

Check to make sure air lines are seated in 
connectors. Inspect fittings with soapy water. 
Trim hose or re-seal fitting. Ensure lines are 
cut straight.

Corner won't raise or air leak 
develops.

Look for a kink or fold in the air line. 

Replace any air line that has been kinked.

PROBLEM

CAUSE

SOLUTION

System won’t maintain pressure 
overnight.

Improperly installed air line, air line has 
holes or cracks.

Leak test the air line connections, the 
threaded connection into the air spring, and all 
fittings in the control system.

Air spring or air line leak. 

Fitting seal or air line is compromised.

Check to make sure air lines are seated in 
connectors. Inspect fittings with soapy water. 
Trim hose or re-seal fitting. Ensure lines are 
cut straight.

Corner won't raise or air leak 
develops.

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 and how much pressure 

will they need?

  For LoadLifter 5000 standard, Ultimate and Ultimate Plus, the recommended 

minimum air pressure is 5 PSI, but it can safely be run at zero air pressure unladen 
(no load).

Q . 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 springs. Even a bicycle tire pump can be 
used, but it’s a lot of work. 

Q . How long should air springs last?
  If the air springs are properly installed and maintained they can last indefinitely. 
Q . 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.

Summary of Contents for 57275

Page 1: ...ead these instructions completely before proceeding with installation Watch the video Info on next page S E R I E S Installation Guide TM MN 1047 011704 ERN 8631 Failure to read these instructions can...

Page 2: ...ss 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 5...

Page 3: ...g the Emergency Brake Line Bracket and Clip 9 Installing the Air Lines 10 Installing Nylon Air Lines 10 Installing Braided Stainless Steel Air Lines 11 Installing the Heat Shield 11 Before Operating 1...

Page 4: ...ig 1 H J J OR V K G L J I A J L E D C I J L F B U only on 2500 HD model P M J Q O N L only on 2500 HD model Small weld nut bracket must be removed Only on 2500 HD model The 3500 model has a different...

Page 5: ...connect PTC fitting 2 G 17203 3 8 24 x 7 8 Bolt 4 J 18444 3 8 Flat washer 23 K 18427 3 8 Lock washer 4 P 17215 3 8 24 x 3 4 Flat head screw 4 AA 20086 Air line 1 BB 10466 Zip tie 6 CC 21230 Valve cap...

Page 6: ...ORTANT 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 li...

Page 7: ...nds setting the jack stands as wide as possible on the axle Fig 2 2 Drop the axle or raise the frame up to make room for the assemblies to be put into position between the frame and axle ASSEMBLING TH...

Page 8: ...holes and into the square holes of the legs in the lower bracket Fig 3 7 Attach the lower bracket B to the bottom of the air spring assembly using two 3 8 flat head screws P Tighten securely fig 4 Ou...

Page 9: ...strike plate 2 With the lower bracket parallel to the strike plate hook one leg under the side of the strike plate and turn the assembly until the other leg is under the strike plate on the other sid...

Page 10: ...bracket inboard and tighten both upper bolts There should be a thumbs width between the air spring roll plate D and the leaf spring U bolt ALIGNING AND ATTACHING THE ASSEMBLY AND LOWER BRACKET 1 Brin...

Page 11: ...e brake line clip N onto the emergency brake line bracket Fig 1 10 3 Attach the clip assembly to the brake line bracket using a 5 16 bolt O two flat washers J and a nylon lock nut M Fig 1 10 4 Align t...

Page 12: ...t pull on the air line 3 Install the Schrader valve in the chosen location Fig 13 Good cut Bad cut MICHIGAN XXX XXX www MICHIGAN gov A Inside fuel tank filler door C License plate or B Inside rear whe...

Page 13: ...immed CAUTION Hex nuts Star washer Rubber washer Air Line Setup for Compressor Integration Air Line Setup Without Compressor System Vehicle body or bumper Hex nuts Flat washer Star washer Rubber washe...

Page 14: ...e cut is clean and square see Fig 12 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...

Page 15: ...ler 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 vehicl...

Page 16: ...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...

Page 17: ...es include roll control bounce dive during braking and sponginess Fig 19 Tuning out these problems usually requires an increase in pressure GUIDELINES FOR ADDING AIR 1 Start with the vehicle level or...

Page 18: ...evelops 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 ai...

Page 19: ...etailer 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 24...

Page 20: ...d 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 0417 Thank you for purchasing Air Lift Pr...

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