freightliner Run Smart ARGOSY, Driver Manual

Page: 117 / 166

•
If using Automatic mode in soft soil and/or
sand, maintain the engine speed between
1000 and 1300 rpm to prevent unnecessary
upshifting.
•
If using Manual mode in soft soil and/or sand,
do not attempt an upshift and try to maintain
the current gear.
•
If the vehicle comes to a stop in the sand it
may be necessary to back up prior to attempt-
ing forward movement.
ATC Mud/Snow Mode
To select the mud/snow mode, depress the ATC
switch (see
Chapter 5 ). This mode raises the wheel
slip speed that is allowed before the traction control
activates. The point at which the traction control will
actuate the braking system increases with throttle:
low throttle allows the system to brake the wheels
earlier; heavy/full throttle raises the point of the ac-
ceptable wheel slip.
Load-Based Shifting
The UltraShift PLUS system is adaptive and will
change the shift points based on grade, engine RPM,
throttle position, and vehicle load. After changing
loads or powering up, the system needs to relearn
these inputs for the first few shifts to make the
proper adjustments.
Coasting
When coasting to a stop on level terrain, the Ultra-
Shift PLUS system may not downshift into the lower
gears. It will select a gear after the throttle is applied.
Eaton Fuller AutoShift
Transmission
Refer to the Eaton website for additional information,
www.roadranger.com .
General Information, AutoShift
Transmission
Eaton Fuller AutoShift transmissions have ten or
eighteen forward speeds and two reverse speeds.
The driver must use the clutch to start and stop the
vehicle. However, the driver does not need to use
the clutch to shift gears. The transmission signals the
engine controller when to break torque and the en-
gine controller automatically increases or decreases
engine speed. When engine speed is correct, the
transmission engages the next gear and signals the
engine controller to resume operation.
Operation, AutoShift Transmission
Automatic and Manual Modes
The SmartShift control lever has a slide switch con-
trols the forward driving mode, automatic (AUTO) or
manual (MAN). See
Fig. 15.2 .
To change mode at any time, move the slide switch
in the desired direction. This allows the driver to re-
spond to a wide range of driving conditions, such as
blind corners, tight curves, and steep hills.
In either mode, the gear indicator displays the cur-
rent gear. See
Fig. 15.3 .
At the start of a shift, the current gear continues to
display until the transmission has been pulled into
neutral. As the transmission is synchronizing for the
new (target) gear, the gear indicator flashes the num-
ber of the target gear.
When the shift is complete, the gear indicator dis-
plays the new gear, without flashing.
Automatic Mode
In automatic drive mode, upshifts and downshifts re-
quire no driver interaction. Press in the neutral lock
button, move the gear selector switch to drive (D),
depress the clutch to engage the gear selected, re-
lease the clutch, and depress the accelerator pedal.
The transmission will shift automatically based on
vehicle and transmission conditions.
If the vehicle is stopped while in drive, pull up or
push down on the SmartShift control lever to change
the starting gear.
If driving conditions require, it is possible to request a
manual shift. The transmission will make the shift if
the engine speed is within 75 rpm of the load-based
shift point for that gear.
Manual Mode
In manual drive mode (MAN), upshifts and down-
shifts are made by the driver. Manual mode should
be used whenever you want to select the shifts in-
stead of letting the transmission shift automatically.
Automated Transmissions
15.10