speed; transmission damage and gear stripping
could result.
1.
To cruise at a particular speed:
1.1
Press the upper half of the SPD CNTL
(on/off) rocker switch on the instrument
control panel.
1.2
Hold the throttle down until the speedom-
eter reaches the desired speed.
1.3
Momentarily flip the RSM/ACC–SET/CST
paddle switch on the instrument control
panel down to SET/CST.
or—Push the SET button on the transmis-
sion shift knob.
2.
To disengage the cruise control:
Depress the brake pedal or clutch pedal.
or—Press the lower half of the SPD CNTL rocker
switch on the instrument control panel.
or—Push the PAUSE button on the transmission
shift knob.
3.
To resume a preselected cruise speed:
Momentarily flip the RSM/ACC–SET/CST paddle
switch on the instrument control panel to RSM/
ACC.
or—Push the RESUME button on the transmis-
sion shift knob. Cruise will return to the last
speed selected.
If the SPD CNTL rocker switch on the instru-
ment control panel is off, turn it on.
NOTE: The resume vehicle speed memory is
not maintained if the ignition is shut off.
4.
To adjust cruise speed up or down:
Hold the paddle switch on the instrument control
panel at RSM/ACC to accelerate, or at SET/CST
to decelerate, until the desired speed is reached.
or—Press the SET button on the transmission
shift knob to accelerate, or the RESUME button
to decelerate, until the desired speed is reached.
Engine Brakes
WARNING
To avoid injury from loss of vehicle control, do
not activate the engine brake system under the
following conditions:
•
on wet or slippery pavement, unless the
vehicle is equipped with antilock braking
system (ABS) and you have had prior expe-
rience driving under these conditions;
•
when driving without a trailer or pulling an
empty trailer;
•
if the tractor drive wheels begin to lock, or
there is fishtail motion after the engine
brake is activated.
Each engine manufacturer uses a specific engine
brake for their engine. Regardless of the manufac-
turer, the engine brake is operated with the principles
outlined in this chapter. Refer to the engine manufac-
turer’s operation manual for details of their particular
engine brake product.
Whenever vehicle braking is required on good road
conditions, the engine brake may be used in con-
junction with the service brakes. There is no time
limit for operation of the engine brake. However, an
engine brake does not provide the precise control
available from the service brakes, and is not a sub-
stitute for a service braking system.
WARNING
Usage of the engine brake as the primary braking
system can cause unpredictable stopping dis-
tances, that could result in personal injury or
property damage. Service brakes are the primary
vehicle braking system.
There are two switches that control the engine brake.
•
The dash mounted ON/OFF switch (ENG
BRK), is used to turn the engine brake ON and
OFF. See
Fig. 10.5.
•
The HI/MED/LO (in some cases HI/LO) engine
brake level switch on the dash, controls the
amount of engine braking.
Since the engine brake is most effective at rated en-
gine speed, gear selection is very important. Gearing
Optional Engine Systems
10.3
To Next Page
Loading...
