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Komatsu Adds Six Models to its Plus Series Dozer Line

Wed June 07, 2000 - Northeast Edition
Construction Equipment Guide


Komatsu America International Company recently announced the availability of six new models to its crawler dozer line. The Komatsu D32E/P-1, D38E/P-1 and D39E/P-1 Plus Series dozers offer powerful and easy-to-use controls, larger blades, reliable engines and a comfortable operating environment for a variety of applications including construction, forestry and land clearing.

These new introductions increase Komatsu’s extensive crawler dozer line to 23 machines, including 10 in the 52.2 to 67.1-kilowatt (70 to 90 hp) range. Each dozer is available as an “E” or “P” model, with the latter featuring a wider and/or longer undercarriage.

A key feature of these new dozers is their compact design, which makes them the only dozers in their class that can be transported with the blade attached and not exceed 2.6-meter (8.5 ft.) travel restrictions.

Reliable Engine and Torque Converter

The engine on each Plus Series dozer is manufactured to provide outstanding power, excellent fuel efficiency, easy servicing and high reliability.

Each new dozer utilizes an engine-mounted torque converter — which provides easy access when servicing — designed specifically for its level of power and performance capabilities. The torque converter enables the operator to throttle down so he can finely tune track speed while still maintaining hydraulic flow to the blade, greatly increasing application efficiency.

A torque converter also helps the operator perform complicated tasks with greater ease because it absorbs shock, multiplies engine torque, reduces engine lugging and provides better control of power.

Precise Control

A feature of the Plus Series dozer line is the easy-to-operate joystick system for precise steering and blade control.

Directional changes are initiated by the low-effort joystick steering control located at the operator’s left armrest. Steering commands are then translated by a PPC valve that modulates hydraulic pressure in direct proportion to the movement applied to the joystick control.

The system features large diameter, single-disc, oil-cooled clutches and brakes on each side of the dozer for increased reliability and enhanced steering control.

A right-hand joystick also initiates all functions of the six-way hydraulic blade including lifting and lowering, tilting and angling.

Countershaft Transmission

The full powershift, countershaft transmission features three forward and three reverse speeds that increase productivity by reducing machine cycle-time through faster ground speeds. The gears are in constant mesh and are selected through the operator’s left-hand joystick. The hydraulic flow to the clutches is automatically controlled to provide smooth, low-shock shifting.

Conveniently located foot pedals control the dozer’s speed. The right pedal provides engine deceleration and braking power, while the left controls spring-applied brakes without slowing the engine. Either pedal can be used to control tractor motion.

Improved Operator Comfort

The combination of joystick and simple foot-pedal controls enables low-effort, efficient operation of the dozers in any application. The joysticks are located at the ends of armrests that are independently adjustable to reduce operator fatigue.

Each dozer also features a suspension-type seat adjustment that conforms to the operator’s weight with an adjustable lumbar support for maximum comfort.

The D32E-1 and D32P-1 both feature the 52.2-kilowatt (70 hp) Komatsu 4D102E-1 engine, and offer blade capacities of 1.4 and 1.5 cubic meters (1.81 and 1.9 cu. yds.), respectively. The D38E-1 and D38P-1 feature the 59.6-kilowatt (80 hp) Komatsu S4D102E-1 engine, and offer blade capacities of 1.7 and 1.5 cubic meters (2.2 and 1.9 cu. yds.). The D39E-1 and D39P-1 feature the 67.1-kilowatt (90 hp) Komatsu S4D102E-1 engine and blade capacities of 1.9 and 1.8 cubic meters (2.45 and 2.3 cu. yds.).

In addition, each dozer has a 170.3-liter (45 gal.) fuel tank, which allows 12-hour operation.

For more information, visit www.KomatsuAmerica.com.




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