Milton CAT D8T - Manual (Page 9)

Torque Divider. A high efficiency torque
divider with fixed stator provides high
torque multiplication while shielding
the drive train from sudden torque
shocks and vibration.
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:
• Three planetary gear sets:
• Two planetary gear sets
(steering and drive) make up
the “dual differential,” which
performs the traditional drive
function (forward or reverse).
Unlike competitive machines,
the differential also performs
a steering function with input
from the steering motor.
• 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
hydraulic pump.
• A bi-directional, fixed-displacement
steering motor.
• Heavy-duty steering drive gears.
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.
Drawbar Pull vs. Speed. As loads on
the tractor increase, the D8T offers
unmatched lugging capability and
smooth shifting as the need occurs
to change gears under varying loads.
The 3-speed forward, 3-speed reverse
transmission, backed by differential
steering, offers excellent runout speeds
and accurate steering capability
under load.
Elevated Final Drives. Isolated from
ground and equipment induced impact
loads for extended power train life.
• Crown-shaved drive gears provide
smooth, quiet, low maintenance
operation.
• Splash lubrication and Duo-Cone ®
Seals extend service life.
0 1 2 3 4 5 6 7
1F
2F
3F
0 2 4 6 8 10 km/h
mph
Speed
Drawbar Pull
Power Shift with Differential Steer
0
20
40
60
80
100
120
140
lbs x
1000
N x
1000
600
500
400
300
200
100
0
9
Drive Train
The drive train provides maximum efficiency in combination with the C15 engine with
ACERT Technology.