Low Fuel Consumption

The fuel consumption is greatly reduced because of the low noise, high-torque engine, the variable piston pumps for the Closed-center Load Sensing System (CLSS), and the large capacity torque converter. This matched combination provides maximum efficiency in the low-speed range.

Dual-Mode Engine Power Select System

This wheel dozer offers two selectable operating modes — E and P. The operator can adjust the machine’s performance with the selection switch.

E Mode:

Provides maximum fuel efficiency for general dozing.

P Mode:

Provides maximum power output for hard dozing operation or hillclimb.

Variable Traction Control System

In limited traction situations where the operator would like to avoid tire slippage (in loose material or muddy ground conditions) the operator can reduce slippage by activating the Variable Traction Control System. This feature is activated in the forward first (F1) gear range. The optimum rim pull (F1) is controlled by adjusting the control knob counterclockwise from 100% to 20%.

Lock-up Torque Converter

The Komatsu designed lock-up torque converter provides increased production efficiency, reduced cycle times and optimum fuel savings in long pushes and hillclimb operations. This standard feature allows the operator to activate the system with a switch located on the right-side control panel.

Built-in Blade Tilt Piping

Blade tilt piping is built into the straight frame to protect it from damage.

Wet multi-disc brakes and fully hydraulic braking system

Wet multi-disc brakes and fully hydraulic braking system mean lower maintenance costs and high reliability. Wet disc brakes are fully sealed. Contaminants are kept out, reducing wear and maintenance. Brakes require no adjustments for wear. The new parking brake is also adjustment-free, wet multi-disc for high reliability and long life. Added reliability is designed into the braking system by the use of two independent hydraulic circuits, providing hydraulic backup. Fully hydraulic brakes mean no air systems to bleed, or the condensation of water in the system that can lead to contamination, corrosion, and freezing.

High-Rigidity Frames

Front and rear frames are designed to work in the toughest applications and provide high rigidity for the power train and dozer equipment. The high-rigidity frames, together with the reinforced dozer linkage, reduce dozing stress and shock.

Modulated Clutch System

The Modulated Clutch System controls the tractive effort with the left brake pedal from 100% to 20% of the converter output torque.

• Useful for smooth speed reduction when approaching the end of dozing

• Easy control of tire slippage

• Reduces shocks in shifting from forward to reverse

Advanced Joystick Steering System

AJSS is a feedback steering system which has been incorporated to allow steering and forward and reverse selection to be controlled by wrist and finger control. With the feedback function added, the machine steering angle is defined exactly the same as the lever tilt angle.

Engine

Transmission

Axles and Final Drives

Brakes

Steering System

Hydraulic System

Service Refill Capacities