5.
Do not preselect with the deep reduction button.
When making the shift from a deep reduction
ratio to a low range ratio, move the deep reduc-
tion button from a forward position to a rearward
position, then complete the shift immediately.
6.
Never move the deep reduction button from a
rearward position to a forward position when the
transmission is in high range.
7.
Do not shift from high range to low range at high
vehicle speeds.
8.
Do not make range shifts with the vehicle moving
in reverse gear.
9.
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.
10. After your shifting ability improves, you may want
to skip some of the ratios. This may be done
only when operating conditions permit, depend-
ing on the load, grade, and road speed.
Upshifting
There are several patterns of upshifting, depending
on the vehicle load and the road conditions. See
Table 8.2
for suggested shifting sequences. Deep
reduction gears are best suited for heavy loads and
steep inclines. Low gear (in 10-speed transmissions)
is best suited for off-highway use.
The following instructions are recommended for start-
ing a loaded vehicle moving, under adverse condi-
tions.
1.
Position the gear shift lever in neutral. Start the
engine, and bring the vehicle air system pressure
up to 100 to 120 psi (689 to 827 kPa).
2.
Position the range preselection lever down, into
low range.
3.
Move the deep reduction button to the forward
position, to engage the deep reduction gears.
4.
Depress the clutch pedal to the floor; shift into
low-low gear (10-speed transmissions) or 1st
gear of deep reduction (15-speed transmissions);
then engage the clutch, with the engine at or
near idle speed, to start the vehicle moving. Ac-
celerate to 80 percent of engine governed speed.
7
9
6
8
10
7
10
6
8
9
R
Lo Hi
DR
DR Lo
2
2
DR Lo
DR Lo
DR Lo
DR Lo
4
4
1
1
3
3
5
5
R
Lo Hi
DR
DR Lo
DR Lo
DR Lo
DR Lo
DR Lo
2
2
5
5
1
1
3
3
4
4
1
1
2
2
3
3
4
4
5
5
6
7
8
9
10
1
2
3
4
5
6
7
03/13/96
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N
N
A
B
A. Eaton Fuller RT and RTX transmissions shift pattern
B. Eaton Fuller RTO transmissions shift pattern
1.
High Range
2.
Low Range
3.
Deep Reduction
4.
High Range
5.
Low Range
6.
Forward for IN
7.
Rearward for OUT
Fig. 8.20, Eaton Fuller 15-Speed RT, RTO and RTX Model Transmissions Shift Patterns
Transmissions
8.22
