freightliner Columbia - Page 35

Transmission Controls
If so equipped, the transmission range control valve
and splitter valve are attached to the gearshift knob.
Transmission shift pattern labels are located inside
the cab. For control of the automated mechanical
transmissions, use the Freightliner SmartShift
™
Transmission Shift Control mounted on the steering
column. See Chapter 8 for complete transmission
operating instructions.
Freightliner SmartShift
™
Transmission
Shift Control
The SmartShift transmission shift control is an elec-
tronic transmission control device. It is applicable to
both automated mechanical and automatic transmis-
sions but must be mated to an Eaton
®
Fuller
®
Auto-
Shift or Meritor
™
Engine Synchro Shift (ESS) trans-
mission. It replaces either the typical floor-mounted
shift lever or dash-mounted push button control. The
SmartShift control mounts to the right-hand side of
the steering column and is operated by the driver’s
right hand. See Fig. 2.30 and Fig. 2.31. SmartShift
accepts driver requests for transmission functions
and transmits them through hard wiring to the trans-
mission control unit (TCU).
SmartShift offers advantages over conventional
transmission control devices; usable cab space is
increased and access to the sleeper is improved by
removing the shift lever from the floor. Also, because
of the steering column mounting, the transmission
control is within fingertip reach of the steering wheel,
which enhances safety.
SmartShift is a true shift-by-wire system. Manual
gearshifts (all ESS and AutoShift when in manual
mode) are accomplished by a momentary pull or
push on the control in the plane perpendicular to the
steering wheel. See Fig. 2.32. Pull upward (toward
you) on the control to upshift and push downward
(away from you) to downshift. For the Eaton Fuller
AutoShift transmission, a four-position (R, N, D, L)
linear mode selector switch is located at the end of
the control. See Fig. 2.30. For the Meritor ESS trans-
mission, a three-position (R, N, F) linear mode selec-
tor switch is located at the end of the control. See
Fig. 2.31. The control is spring-loaded and returns to
mid-position when released after an upshift or
downshift.
Engine Brake Switch, Optional
The engine brake (ENG BRK) switch controls the
degree of engine braking. See Chapter 7 under the
11/23/99
1
2
3
4
5
6
7
8
9
10
11
f270082
1. SmartShift Control
2. Forward Driving Mode Switch (slide switch)
3. MAN Switch Position
4. AUTO Switch Position
5. Upshift Direction (in manual mode, pull upward)
6. Reverse Selector Position
7. Mode Selector Switch
8. Neutral Selector Position
9. Drive Selector Position
10. Low Selector Position
11. Downshift Direction (in manual mode, push
downward)
Fig. 2.30, SmartShift Control (for Eaton Fuller AutoShift
transmission)
11/23/99
P
U
S
H
PULL
Smart
Shift
1
f270081
S
H
IF
T
D
O
W
N
S
H
IF
T
U
P
2
4
3
5
6
7
1. SmartShift Control
2. Upshift Direction (pull upward)
3. Reverse Selector Position
4. Mode Selector Switch
5. Neutral Selector Position
6. Forward Selector Position
7. Downshift Direction (push downward)
Fig. 2.31, SmartShift Control (for Meritor Engine
Synchro Shift transmissions)
Instruments and Controls Identification
2.27