freightliner Columbia Driver Manual page 104

Transmissions
dash for the operating instructions for the specific
transmission installed in your vehicle.
9-Speed RT/RTX Models
Eaton Fuller 9-speed transmissions have a 5-speed
front section and a 2-speed rear range section. The
low gear in the front sections of the RT and RTX
transmissions is used only as a starting ratio. The
remaining gear positions of the above transmissions
are used once in the low range and once in the high
range.
See Fig. 8.5 for the 9-speed range-shift shift
patterns.
HI
5
1
LO
N
6
LO
2
11/23/99
A. High Range
Fig. 8.5, Eaton Fuller 9-Speed Transmission Shift
Patterns
10-Speed FR/FRO and RT/RTO/RTX
Models
Eaton Fuller 10-speed transmissions have 10 selec-
tive, evenly-spaced forward ratios. Each transmission
has a 5-speed front section and a 2-speed rear
range section. The 10 forward speeds are obtained
by twice using a 5-speed shift pattern: the first time
in low range, the second time in high range. See
Fig. 8.6 for the shift patterns.
NOTE: The 4th/9th and the 5th/10th shift posi-
tions in the RT (direct ratio) and RTX (overdrive
ratio) transmissions are directly opposite in the
RTO (overdrive ratio) transmissions
Operation, Eaton Fuller Range-Shift
1.
When operating off-highway, or under adverse
conditions, always use low gear (if so equipped)
when starting to move the vehicle.
8.7
7
3
A
B
8
4
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B. Low Range
HI
7 9
R
4
2
LO
N
8
6 10
1 5
3
12/15/1999
A. High Range
Fig. 8.6, Eaton Fuller 10-Speed Transmission Shift
Patterns
When operating on-highway, with no load, or
under ideal conditions, use 1st gear when start-
ing to move the vehicle (except when equipped
with a 9-speed RTO transmission, then always
start in low gear).
For all conditions, use the highest gear that is
still low enough to start the vehicle moving with
engine idling, and without slipping the clutch ex-
cessively.
2.
Use the clutch brake to stop gear rotation when
shifting into low (or 1st) or reverse when the ve-
hicle is stationary. The clutch brake is actuated
by depressing the clutch pedal all the way to the
floor.
For normal upshifts and downshifts, only a partial
disengagement of the clutch is necessary to
break engine torque.
3. Do not make range shifts with the vehicle moving
in reverse gear.
4. Never attempt to move the range preselection
lever with the gear shift lever in neutral while the
vehicle is moving. Preselection with the range
preselection lever must be made prior to moving
the shift lever out of gear into neutral.
5. Do not shift from high range to low range at high
vehicle speeds.
6. Double-clutch between all upshifts and down-
shifts.
7.
After your shifting ability improves, you may want
to skip some of the ratios. This may be done
A
B
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B. Low Range