Tuning The Air Pressure; Guidelines For Adding Air - Air Lift LoadLifter 5000 Ultimate Installation Manual

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

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,
4 . If it is ever suspected that the air bags have bottomed out, increase the pressure (Fig . 40) .
5 . Adjust the pressure up and down to find the best ride .
6 . If the vehicle rocks and rolls, adjust the air pressure to reduce movement .
7 . It may be necessary to maintain different pressures on each side of the vehicle .
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If the vehicle's headlights are shining into the trees or the vehicle is leaning to one
side, then it is not level (Fig . 37) . 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 . 38) . 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 . 39) . Tuning out these
problems usually requires an increase in pressure .
Bad headlight aim
fig. 37
if equipped .
Loads such as water, fuel, and appliances will cause the vehicle to be heavier on one
side (Fig . 41) . As much as a 50 PSI difference is not uncommon .
Bottoming out
Rough ride
fig. 38
Unlevel
fig. 40
LoadLifter 5000 Ultimate
Sway and
fig. 39
body roll
Level
fig. 41
MN-970