User Manual

MN-957

LoadLifter 5000

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.

3. If the system develops an air leak, 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 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, THE AIR PRESSURE ACTUALLY

NEEDED IS DEPENDENT ON LOAD AND GVWR.

4. Loaded vehicles require at least 25 PSI. 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

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.

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 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.

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

5 PSI

100 PSI

Maximum Air PressureMinimum Recommended Pressure

CAUTION