Milton CAT D9T - Manual (Page 8)

Drive Train
Provides maximum efficiency in combination with the C18 engine
Power Shift with Differential Steer
Drawbar Pull
l b× N ×
1000 1000
180
160 700
140
600
120
500
100
400
80
300
60
200
40
100 20
0
0 2 4 6 8 10 12 km/h
0
1
2
3
0 1 2 3 4 5 6 7 8 mph
Speed
1 – 1st Gear Forward
2 – 2nd Gear Forward
3 – 3rd Gear Forward
Torque Converter
A high efficiency torque converter with fixed stator provides
high torque multiplication while shielding the drive train
from sudden torque shocks and vibration.
Planetary Power Shift Transmission
Three speeds forward and three speeds reverse, utilizing large
diameter, high capacity, oil-cooled clutches.
•
Modulation system permits fast speed and direction
changes.
• Modular transmission and differential slide into rear
case for servicing ease, even with ripper installed.
• Oil-to-water cooler for maximum cooling capacity.
• Forced oil flow lubricates and cools clutch packs to
provide maximum clutch life.
Differential Steering System
A planetary differential turns the machine by speeding up
one track and slowing the other, while maintaining full
power to both. The system consists of:
•
Two planetary gear sets (steering and drive) make up the
“dual differential,” which performs the traditional drive
function (forward or reverse).
• A third planetary gear set, the “equalizing planetary,”
resides inside the transmission case. It is connected to
the dual differential, which provides a maximum speed
difference between the right and left final drives during
a turn.
• A dedicated variable-displacement steering pump.
• A bi-directional, fixed-displacement steering motor.
Drawbar Pull vs. Speed
As loads on the tractor increase, the D9T offers unmatched
lugging capability and smooth shifting as the need occurs to
change gears under varying loads. Drive train offers excellent
runout speeds and accurate steering capability under load.
Enhanced Auto Shift
Enhanced Auto Shift is a new standard feature that improves
fuel efficiency by automatically selecting the optimal forward
and reverse gear and engine speed combination based upon
powertrain load and desired ground speed.
Modular Powertrain
The modular powertrain design permits quick removal
and installation of major components such as the engine,
transmission and final drives.
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