Eaton Fuller Deep-Reduction Transmissions - freightliner Columbia Manual

Transmissions
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
(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.).
For 18-speed transmissions:
To shift from 5th direct to 5th overdrive, move the
splitter control button
(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 before engaging the clutch. Do not move
8.11
(Fig. 8.7) into the overdrive
(Fig. 8.8) into the overdrive
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:
Continue downshifting from 4th overdrive to 4th
direct, then 4th direct to 3rd overdrive, 3rd over-
drive to 3rd direct, etc. Single-clutch when split
shifting (direct to overdrive, overdrive to direct).
Double-clutch when making lever shifts (4th to
3rd, 3rd to 2nd, etc.).
IMPORTANT: Never use the clutch brake when
downshifting, or as a brake to slow the vehicle.
Eaton Fuller Deep-Reduction
Transmissions
Refer to the Eaton website for additional information,
www.roadranger.com.
General Information, Deep Reduction
IMPORTANT: Not all lever positions are used in each
range and the shift patterns vary between transmis-
sions. Be sure to read the shift pattern decal on the
dash for the operating instructions for the specific
transmission installed in your vehicle.
9-Speed RTO–LL Models
Eaton Fuller 9-speed deep-reduction transmissions
have a 5-speed front section, and a 2-speed rear-
range section, with a deep reduction gear. The deep
reduction (low-low) gear is used only when operating
under adverse conditions. Low gear in the front sec-
tion is used only for rough, off-highway conditions, as
a starting ratio. Both the low gear and 1st gear in the
low range can be split, using the deep reduction but-
ton, for another reduction ratio in those shift lever
positions. The remaining four forward positions are
used once in the low range and once in the high
range. Reverse in the low range can also be split
with the deep reduction button for a lower ratio.