CONTROLS AND INSTRUMENTS
The three leveling valves are located as follows:
one at the front which controls the amount of air in
both front air springs, one at the left rear which
controls the left rear corner of the vehicle and one
at the right rear which controls the right rear
corner of the vehicle. During normal driving, these
valves work automatically to maintain the chassis
at the proper level above the axles, indifferent of
road conditions or vehicle weight.
When parked, and
ONLY
when parked, the level
of the vehicle can be manually adjusted within the
range of travel of the air springs. Thus, if the
vehicle is parked on uneven ground, the manual
override leveling system can be used to level the
chassis of the vehicle. With the ignition
ON
(engine running or not), turn the selector switch
located on L.H. side control panel to the area of
the vehicle requiring leveling, then press the
rocker switch accordingly (up or down) to inflate
or deflate the selected set of air springs. The front
position raises or lowers the front only and does
not tilt the vehicle to its sides. Each rear position
raises or lowers its respective side, therefore, the
rear positions can be used to tilt the vehicle to one
side or the other, or they can be used to raise or
lower the rear of the vehicle. When leveling
vehicle, it is often necessary to run the engine in
order to get an adequate air supply.
Note :
It is always better to first level the rear
of the vehicle (right to left) before raising or
lowering the front. After adjusting the rear, watch
the level as you adjust the front. If the level shows
that the vehicle is starting to tilt to either side, then
stop adjusting the front as one of the air springs
has come to the end of its travel range.
After manual leveling, turn
OFF
the engine. The
vehicle will stay in the leveled position (the air is
"locked"
in the air springs) as long as there are no
air leaks. The vehicle will hold this position for
several days. When engine is restarted and air
pressure is adequate, the vehicle will
automatically level itself for driving conditions.
Warning
:
Do not drive the vehicle with the
level low selector switch in any position other than
OFF
, as this may render the vehicle unsafe and
uncontrollable. If this is the case, the Level Low
warning telltale light in dashboard will flash,
reminding you that the selector is not in the
OFF
position.
Note :
If, for any reason, you wish to start the
engine without moving vehicle (to warm up engine
for instance) while keeping the vehicle in the
manually leveled position, place selector switch in
any position except
OFF
. When ignition switch is
turned to the
OFF
position, reset the selector
switch to the
OFF
position.
P
ARKING
B
RAKES
C
ONTROL
V
ALVE
Spring-loaded parking brakes are applied by
pulling up the control valve knob and protector
assembly. Lift the safety cover and push down to
release brakes. Refer to "Emergency and Parking
Brakes" in "Emergency Features And Safety
Equipment" chapter 6.
T
AG
A
XLE
C
ONTROL
V
ALVE
Unload (or raise) the tag axle by pushing the lever
forward. Pulling the lever back will load (or lower)
the tag axle. Refer to "Other Features" in chapter
4 for additional information.
CONTROL VALVES
C
OOLANT
H
EATER
T
IMER
Use to program the start time of the optional
engine coolant heater. Refer to "Other Features"
chapter 4 for additional information.
3-5