freightliner cascadia Driver Manual page 140

Manual Transmissions and Hydraulic Clutch
accelerating to 80 percent of engine governed
speed. See Fig. 14.1.
For 18-speed transmissions:
Shift upward from low overdrive to 1st direct by
first moving the splitter control button into the
direct (rearward) position
shift lever, double-clutching, to the 1st gear posi-
tion.
Continue upshifting through the shift pattern.
Double-clutch during lever shifts (1st to 2nd to
3rd to 4th); single-clutch during split shifts (1st
direct to 1st overdrive, etc.).
6. When in 4th gear (13-speed transmissions) or
4th overdrive (18-speed transmissions) and
ready to shift up to 5th gear, use the range shift
lever as follows:
For 13-speed transmissions:
While in 4th gear, pull the range shift preselec-
tion lever up, into high range. The transmission
will automatically shift from low to high range as
the shift lever passes through neutral. Then, dis-
engage the clutch; double-clutch through neutral;
move the shift lever to 5th gear; engage the
clutch, and accelerate the engine.
For 18-speed transmissions:
While in 4th overdrive, pull the range shift prese-
lection lever up, into high range. The transmis-
sion will automatically shift from low to high
range as the shift lever passes through neutral.
Move the shift lever, double-clutching, to the 5th
gear position. Just before making final clutch en-
gagement, move the splitter control button to the
direct (rearward) position; then engage the clutch
and accelerate. Do not move the control button
while the shift lever is in neutral.
7. Shift up through the high range gears as follows:
For 13-speed transmissions:
To shift from 5th direct to 5th overdrive, move the
splitter control button
drive (forward) position, then immediately release
the accelerator. Press and release the clutch
pedal. After releasing the clutch, accelerate
again.
Continue upshifting through the shift pattern.
Double-clutch during lever shifts (6th to 7th to
14.3
(Fig. 14.2). Move the
(Fig. 14.1) into the over-
8th); single-clutch during split shifts (6th direct to
6th overdrive, etc.).
For 18-speed transmissions:
To shift from 5th direct to 5th overdrive, move the
splitter control button
drive (forward) position, then immediately release
the accelerator. Press and release the clutch
pedal. After releasing the clutch, accelerate
again.
Continue upshifting through the shift pattern.
Double-clutch during lever shifts (6th to 7th to
8th); single-clutch during split shifts (6th direct to
6th overdrive, etc.).
Downshifting
1. Downshift from 8th overdrive to 8th direct without
moving the shift lever. Flip the splitter control but-
ton to the direct (rearward) position, then imme-
diately release the accelerator, and disengage
the clutch. Engage the clutch, and accelerate the
engine only after the transmission has shifted.
2. Start the downshift from 8th direct to 7th over-
drive by flipping the splitter control button to the
overdrive (forward) position; then, immediately
double-clutch through neutral, moving the shift
lever from 8th to 7th gear.
3.
Shift downward through each of the high range
gears, alternating the procedures in steps 1 and
2, above, until reaching 5th direct.
4. While in 5th direct and ready for the downshift to
4th (13-speed transmissions) or 4th overdrive
(18-speed transmissions), push the range prese-
lection lever down. Then, double-clutch through
neutral and move the shift lever to the 4th gear
position. On 18-speed transmissions, move the
splitter control button to the overdrive (forward)
position beforeengaging the clutch. Do not move
the control button while the shift lever is in neu-
tral.
5. Continue downshifting from 4th to 1st as follows:
For 13-speed transmissions:
Downshift through the low range gears as condi-
tions require.
For 18-speed transmissions:
(Fig. 14.2) into the over-