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Drive Train
Provides maximum efficiency in combination with the C18 engine
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BENEFITS & FEATURES
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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.
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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.
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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.
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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.
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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.
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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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