operators_manual

10. Repeat Steps 2 through 6 above
for the RH valve on vehicles with a
dual-valve system.
Suspension Air Pressure Gauge &
Switch
General information about the air
suspension pressure gauge and switch.
Your vehicle may have an air suspension
and a deflation switch which allows the air
in the suspension to be exhausted from a
switch on the dash. The normal purpose of
this feature is to allow you to lower the
vehicle for loading. A guard on the switch
prevents you from accidentally deflating
the suspension.
The Suspension Air Pressure gauge
(option) indicates the amount of air
pressure in the air suspension springs in
pounds per square inch (psi). Air pressure
in the spring is related to the rear axle load.
The greater the rear axle load, the greater
the air pressure in the air bags. Therefore,
the air pressure displayed will vary,
depending upon the rear axle load.
Air Ride Height Data
These are factory settings for ride height of
the rear air suspension.
1. Ride Height
2. Centerline of suspension
Single Axle Laden Ride Height -
inches (mm)
Air Trac 11.00 (279)
Low Air Leaf 6.50 (165)
Single Axle UnLaden Ride
Height - inches
(mm)
Air Trac 11.39 (289)
Low Air Leaf Built
Before April 2004
8.75 (222)
Single Axle UnLaden Ride
Height - inches
(mm)
Low Air Leaf Built
After April 2004
6.75 (171)
Tandem Axle Laden Ride Height -
inches (mm)
Air Leaf 11.70 (297)
Air Trac 11.00 (279)
Low Air Leaf 8.50 (216)
Low Low Air Leaf 6.50 (165)
FLEX Air 8.50 (216)
Tandem Axle Unladend Ride
Height - inches
(mm)
Air Leaf 12.0 (305)
Air Trac 11.38 (289)
Low Air Leaf 8.75 (222)
Low Low Air Leaf 6.75 (171)
DRIVING - Axle and Suspension
Y53-6047-2HEN (03/18) 163
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