Frequently Asked Questions; Tuning The Air Pressure - Air Lift LoadLifter 5000 Ultimate Installation Manual

LoadLifter 5000 Ultimate

FREQUENTLY ASKED QUESTIONS

Q . Will installing air springs increase the weight ratings of a vehicle?
Q . Is it necessary to keep air in the air springs at all times and how much pressure
Q . Is it necessary to add a compressor system to the air springs?
Q . How long should air springs last?
Q . Will raising the vehicle on a hoist for service work damage the air springs?

TUNING THE AIR PRESSURE

Pressure determination comes down to three things — level vehicle, ride comfort, and
stability .
1 . Level vehicle
2 . Ride comfort
3 . Stability
MN-944
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 .
will they need?
For LoadLifter 5000 Ultimate, the recommended minimum air pressure is 5 PSI, but it
can safely be run at zero air pressure .
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 .
If the air springs are properly installed and maintained they can last indefinitely.
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 .
If the vehicle's headlights are shining into the trees or the vehicle is leaning to one side,
then it is not level (fig. 2.1). Raise the air pressure to correct either of these problems
and level the vehicle .
If the vehicle has a rough or harsh ride it may be due to either too much pressure or not
enough (fig. 2.2). Try different pressures to determine the best ride comfort.
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. 2.3). Tuning out these problems usually
requires an increase in pressure .
fig. 2.1
Bad headlight aim
fig. 2.2
Rough ride
fig. 2.3
Sway and
body roll
21