Automatic Mode (AUTO)
In automatic drive mode (AUTO), upshifts and down-
shifts are made by the transmission without driver
intervention. Press in the neutral lock button, move
the selector switch to drive (D), and press down on
the throttle pedal. The transmission will shift auto-
matically.
If driving conditions require, it is still possible to re-
quest 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.
If the driver presses down on the throttle pedal after
a manual downshift in automatic mode, the transmis-
sion will upshift again if the UltraShift DM TCU re-
quires it.
Manual Mode (MAN)
In manual drive mode (MAN), upshifts and down-
shifts are made by the driver:
•
To shift up, pull the lever up (towards you).
•
To shift down, push the lever down (away from
you).
The system will hold the current gear until the driver
requests a shift. In downhill situations in particular,
the driver must be alert to vehicle speed by down-
shifting and/or using the service brakes as needed.
A shift request will still be refused if the selected gear
would cause engine overspeed or excessive lugging.
Selecting Gears
Reverse
Reverse (R) is at the upper end of the four-position
selector switch located at the end of the SmartShift
control lever. To select R, press in the neutral lock
button and move the selector switch upward to the
position above neutral.
UltraShift DM has two reverse gears, reverse low
and reverse high. To manually shift between them,
use the shift lever as described for MAN mode.
There is no AUTO mode for reverse.
When reverse low is selected, the letter "R" displays
on the current gear indicator. When reverse high is
selected, the letter "H" displays on the current gear
indicator. See
Fig. 8.11
.
IMPORTANT: Under normal conditions, do not
select reverse with the vehicle moving forward.
The vehicle must be moving at less than two miles
per hour (3 km/h) before selecting reverse. If reverse
is selected when the vehicle is moving faster, an au-
dible warning will sound and continue sounding at
three-second intervals until the control lever is re-
turned to the "D" position or the vehicle slows to the
proper speed.
If necessary to rock the vehicle, use the selector
switch to shift back and forth at low speed between
reverse and drive.
Neutral
IMPORTANT: Always start the engine with the
transmission in neutral, the parking brake set,
and the service brakes applied.
Neutral (N) is directly below R on the four-position
selector switch located at the end of the SmartShift
control lever. To select N, press in the neutral lock
button and move the selector switch to the position
below R. When neutral is selected, the letter "N" dis-
plays on the current gear indicator. See
Fig. 8.12
.
WARNING
Do not coast in neutral. Coasting in neutral can
cause an accident, possibly resulting in severe
personal injury or death.
Neutral is always available during operation, what-
ever the vehicle speed. When in neutral, requests to
10/14/2003
f610681
Fig. 8.11, Reverse Gear Display
Transmissions
8.9
