freightliner 108SD, Driver Manual

Page: 117 / 192

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 press down on the throttle
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.
To upshift, pull the lever up (towards the driver). To
downshift, push the lever down (away from the
driver). The system will hold the current gear until the
driver requests a shift. In downhill situations in par-
ticular, the driver must be alert to vehicle speed by
downshifting and/or using the service brakes as
needed.
A shift request will be refused if the selected gear
would cause engine overspeed or excessive lugging.
If the vehicle is stopped while in drive, pull up or
push down on the SmartShift control lever to change
the starting gear.
Power Up
1.
With the parking brake set, select neutral (N) by
moving the gear selector switch to the N posi-
tion.
2. Depress the clutch pedal all the way down to the
floor.
3. Start the engine. The CHECK TRANS and
TRANS TEMP lamps illuminate and go out again
(bulb check).
4. Release the clutch to allow the speed sensor on
the input shaft to get a reading.
5.
Depress the clutch again and release the parking
and service brakes.
6. Select the desired starting gear.
7. Release the clutch.
Selecting a Starting Gear
1. In automatic mode, select drive (D) by sliding the
gear selector switch downward to the next posi-
tion below the neutral position.
2.
Depress the clutch to engage the gear selected.
Release the clutch and drive the vehicle.
Changing the Default Starting Gear
To select a starting gear other than the default start-
ing gear, follow the instructions below.
1. Make sure the vehicle is stopped and in drive.
2. In either automatic or manual mode, pull upward
(to increase) or push downward (to decrease) on
the SmartShift control lever. Each pull upward on
the control increases the starting gear by one
gear, but no higher than fourth gear.
3. The number of the gear selected will flash on the
gear indicator until the driver releases the clutch.
This gear will be stored in memory as the default
starting gear until either a different starting gear
is selected by the driver or the engine is shut
down.
NOTE: The transmission may also be pro-
grammed so that it is not possible to select a
starting gear other than the preprogrammed de-
fault starting gear.
Upshifting
NOTE: With the transmission in drive in the au-
tomatic mode, upshifts require no driver interac-
tion.
1. With the transmission in drive in the manual
mode, pull the control lever up (towards the
driver) to upshift. If the requested gear is avail-
able, the transmission will upshift and the new
gear will display on the gear indicator.
NOTE: Two consecutive, momentary upward
pulls will cause a skip shift when the next two
higher gears are available and conditions are
appropriate.
Automated and Automatic Transmissions
14.11