komatsu D375A-5R SPECIFICATIONS

www.Komatsu.com Printed in Japan 200801 IP. AD (10)

CEN00203-01 Materials and specifications are subject to change without notice

is a trademark of Komatsu Ltd. Japan

HORSEPOWER

Gross: 451 kW

605 HP @ 1800 rpm

Net: 391 kW 525 HP @ 1800 rpm

OPERATING WEIGHT

68370 kg

150,730 lb

Photo may include optional equipment.

D375A-5R

RAWLER

OZER

Electronic Controlled Modulation Valve (ECMV) controlled steering clutch/brake system facilitates smooth

and shockless steering operation.

See page 5.

2 3

D375A-5 Crawler Dozer

Simple hull frame

and monocoque track frame with pivot shaft for greater reliability.

Extra-low machine profile

provides excellent machine balance and low center of gravity.

Large blade capacities:

18.5 m324.2 yd3(Semi-U dozer)

and

22.0 m328.8 yd3(U dozer)

Preventative maintenance

● Centralized service station

● Enclosed hydraulic piping

● Modular power train design

● Oil pressure checking ports

See page 9.

Photo may include optional equipment.

The Dual tilt dozer (option) increases productivity while reducing operator effort. See page 7.

Automatic lockup

torque converter

saves fuel and increases speed and power transmission efficiency on long pushes. See page 6.

New track link design

reduces maintenance cost by making turning pins easier, with improved pin reuse. See page 9.

K-Bogie undercarriage system

improves traction, component durability, and operator comfort. See page 8.

Rippers (option):

● Variable giant

● Multi-shank

See page 7.

New hexagonal designed cab includes:

● Spacious interior

● Comfortable ride with new cab damper mounting and K-Bogie undercarriage

● Excellent visibility

● High capacity air conditioning system (optional)

● Palm Command Control System (PCCS) lever

● Pressurized cab (optional)

● Adjustable left armrest

● Travel control console integrated with operator seat

See page 8.

Track shoe slip control system (option)

reduces operator fatigue. See page 7.

Komatsu-integrated design

for the best value, reliability, and versatility. Hydraulics, power train, frame, and all other major components are engineered by Komatsu. You get a machine whose components are designed to work together for higher production, greater reliability, and more versatility.

Low-drive, long-track, seven roller undercarriage

provides outstanding grading ability and stability.

ALK

-A

ROUND

D375A

-5R

HORSEPOWER

Gross: 451 kW 605 HP @ 1800 rpm

Net: 391 kW 525 HP @ 1800 rpm

OPERATING WEIGHT

68370 kg 150,730 lb

BLADE CAPACITY

Semi-U: 18.5 m324.2 yd

Full-U: 22.0 m328.8 yd

CRAWLER DOZER

D375A-5R C RAWLER D OZER

Hydraulic driven radiator cooling fan

controlled automatically, reduces fuel consumption and operating noise levels.

See page 6.

SAA6D170E-5 turbocharged after-cooled diesel engine provides an output of 391 kW 525 HP

with excellent productivity. See page 6.

Filtration

Fuel and hydraulic oil filtration improvements reduce fuel and hydraulic system contamination and enhance machine reliability.

See page 10.

Human-machine interface

Palm command electronic controlled travel control joystick

Ergonomically designed palm command travel joystick provides the operator with a relaxed posture and superb fine control without operator fatigue. Transmission gear shifting is simply carried out with thumb.

Fully adjustable suspension seat and travel control console

For improved rear visibility during return part of cycle, the operator can adjust the seat 15° to the right. The transmission and steering controls move with the seat for best operator comfort. The travel control console has adjustments fore and aft and for height. With an independently adjustable armrest, each D375A operator can adjust control positions to his individual preference, providing optimum operational posture for all operators.

Fuel control dial

Engine RPM is controlled by electric signals, providing ease of operation eliminating maintenance of linkage and joints.

Palm command PPC controlled blade control joystick

Blade control joystick uses the PPC (Proportional Pressure Control) valve and the same palm command type joystick as travel control joystick. PPC control, combined with the highly reliable Komatsu hydraulic system, provides superb fine control. (Dual tilt and pitch operation are activated by depressing switch with a thumb.This is available with optional dual tilt dozer.)

Height adjustable blade control armrest

Blade control armrest is height adjustable without any tools in three stages, providing the operator with firm arm support and ideal armrest positioning.

Position adjustable ripper control lever

Ripper control lever is position adjustable, providing optimum operation posture for all operators during ripping operations facing front or watching ripper point.

Komatsu’s new ergonomically designed control system “PCCS” creates an operating environment with

“complete operator control”.

Power train electronic control system

Smooth and soft operation

D375A-5R uses a newly designed power train electronic control system.The controller registers the amount of operator control (movements of lever and operation of switches) along with machine condition signals from each sensor to accurately calculate the control of the torque converter, transmission, steering clutches and brakes for optimized machine operation. The ease of operation and productivity of the new D375A-5R is greatly improved through these new features.

Electronic Controlled Modulation Valve (ECMV) controlled transmission

Controller automatically adjusts each clutch engagement depending on travel conditions such as gear speed, RPM and shifting pattern. This provides shockless, smooth clutch engagement, improved component reliability, improved component life and operator ride comfort.

Electronic Controlled Modulation Valve (ECMV) controlled steering clutches/brakes

Sensors monitor machine operating conditions and electronically control steering clutches and brakes. Monitoring application parameters, such as size of load during dozing, incline angle of slope, and load provides smooth and easy counter-steering on downhill travel, etc.

Preset travel speed selection function

Preset travel speed selection function is standard equipment, enabling the operator to select fore and aft travel speed from three preset patterns; F1-R1, F1-R2 and F2-R2 by using the UP/DOWN switch. When the F1-R2 or F2-R2 preset pattern is selected and the travel control is moved into forward or reverse, the machine travels in the preset gear range automatically. This function reduces manual gear shifting frequency during machine operation, enabling the operator to focus on directional and hydraulic control. Preset travel speed selection is especially helpful when used in combination with the Auto-Downshift Function and reduces cycle times during repeated round trip operations.

When dozing and turning, ECMV automatically controls stroke ratio of steering clutches and brakes depending on degree of load, enabling smooth dozing and turning.

When dozing downhill, ECMV automatically controls steering clutches and brakes depending on incline of machine or degree of load, reducing counter-steering and producing smooth dozing operation.

Auto downshift function

Controller monitors engine speed travel gear and travel speed. When load is applied and machine travel speed is reduced, the controller automatically downshifts to optimum gear speed to provide high fuel efficiency. This function provides comfortable operation and high productivity without manual downshifting. (This function can be cancelled with cancel switch.)

F1-R2 MODE

F1-R1 MODE

F2-R2 MODE

Press DOWN switch

Press UP switch

DOWN

Indicator

Heavy load Light load

Actuated on heavy load or steep slope

Effect of ECMV steering clutches/brake control

Facing front

When turned 15°

Left-hand joystick

Blade and ripper control joystick

Outline of electronic control system

PALM COMMAND CONTROL SYSTEM (PCCS)

D375A

-5R

CRAWLER DOZER

D375A-5R C RAWLER D OZER

Auto shift down switch

Blade control lever

Ripper control lever

Service switch

Fuel control dial

Tra ve l control lever

Clutch pressure

Electronic Controlled Modulation Valve (ECMV)

Conventional modulation valve

Time

Deceleration pedal

Engine controller

Water temp.

Fuel control valve unit

Engine

Engine oil pressure

Monitor panel

MONITOR SYSTEM

Engine speed

Fuel temp.

Transmission controller

Transmission control Torque converter control Implement control

Lockup

Torque converter

Transmission control valve

ECMV

Electronic controlled transmission

Steering controller

Auxiliary valve

ECMV

Transmission output speed sensor

ECMV

Electronic controlled steering/brake system

Acceleration sensor

Brake pedal potentio meter

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