komatsu D375A-6 SPECIFICATIONS

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Page 1

www.Komatsu.com Printed in Japan 200904 IP. AD (10)

CEN00372-00 Materials and specifications are subject to change without notice

is a trademark of Komatsu Ltd. Japan

HORSEPOWER

Gross: 474 kW

636 HP @ 1800 rpm

Net: 455 kW 610 HP @ 1800 rpm

OPERATING WEIGHT

71640 kg

157,940 lb

Photo may include optional equipment.

D375A-6

RAWLER

OZER

375A

Page 2

PCCS (Palm Command Control System)

● Electronic controlled PCCS travel control

● Hydraulic controlled PCCS blade/ripper control

● Fuel control dial

● Automatic/manual gearshift selectable mode

● Gearshift pattern preset function

● ECMV controlled transmission

See page 4.

Large TFT LCD monitor

● Easy-to-see and use 7" large multi-color monitor.

● Can be displayed in 10 languages for global support.

TFT : Thin Film Transistor LCD : Liquid Crystal Display

See page 8.

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 (optional) increases productivity while reducing operator effort.

See page 6.

Automatic transmission with lockup torque converter increases speed and power to improve fuel

consumption and productivity.

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 (optional):

● 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)

● PCCS (Palm Command Control System) lever

● Pressurized cab (optional)

● Adjustable left armrest

● Travel control console integrated with operator seat

See page 8.

Track shoe slip control system (optional)

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, eight roller undercarriage

provides outstanding grading ability and stability.

ALK

-A

ROUND

D375A

-6

HORSEPOWER

Gross: 474 kW 636 HP @ 1800 rpm

Net: 455 kW 610 HP @ 1800 rpm

OPERATING WEIGHT

71640 kg 157,940 lb

BLADE CAPACITY

Semi-U: 18.5 m324.2 yd

Full-U: 22.0 m328.8 yd

CRAWLER DOZER

D375A-6 C RAWLER D OZER

Hydraulic drive radiator cooling fan

controlled automatically, reduces fuel consumption and operating noise levels.

See page 6.

ECMV (Electronic Controlled Modulation Valve)

controlled steering clutch/brake system facilitates smooth and shockless steering operation.

See page 5.

SAA6D170E-5 turbocharged after-cooled diesel engine provides an output of 474 kW 636 HP

with excellent productivity. This machine is EPA Tier 3 and EU stage 3A emissions certified.

See page 6.

Page 3

Human-Machine Interface

Palm command electronic controlled travel control joystick

Palm command travel joystick provides the operator with a relaxed posture and superb fine control without operator fatigue.Transmission gear shifting is simplified with thumb push buttons.

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 also 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 speed 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 operation

D375A-6 uses a newly designed power train electronic control system.The controller registers the amount of operator control (movements of lever and operation of switches) and machine condition signals from each sensor, and calculates to accurately control torque converter, transmission, steering clutches and brakes for optimized machine operation. The ease of operation and productivity of the new D375A-6 is greatly improved by numerous new functions.

ECMV (Electronic Controlled Modulation Valve) controlled transmission

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

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

Sensors monitor machine operating conditions, and the controller activates ECMV electronically to control steering clutches and brakes depending on type of job, such as size of load during dozing, incline angle of slope or load, providing smooth and ease of operation by reducing counter-steering on downhill travel, etc.

Preset travel speed selection function

When the gearshift pattern is set to either <F1R2>, <F2-R2> or <F2-R3L> in automatic gearshift mode, the gear is automatically shifted, reducing round trip repetition work time and operator's efforts.

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 transmission automatically downshifts to optimum gear speed to provide high fuel efficiency. This function provides comfortable operation without manual downshift and high productivity.

F1-R1 MODE

Automatic gearshift mode

F1-R2 MODE

F2-R2 MODE

Press DOWN switch

Press UP switch

F2-R3L MODE

Press DOWN switch

Press UP switch

F1-R1 MODE

Shoe slip control mode

(optional)

F1-R2 MODE

Press DOWN switch

Press UP switch

F1-R1 MODE

Manual gearshift mode

F1-R2 MODE

F2-R2 MODE

Press DOWN switch

Press UP switch

DOWN

Heavy load Light load

Actuated on heavy load or steep slope

Effect of ECMV steering clutches/brake control

Facing front

When turned 15°

Blade and ripper control joysticks

Outline of electronic control system

ONTROL

EATURES

D375A

-6

CRAWLER DOZER

D375A-6 C RAWLER D OZER

UP SHIFT

DOWN SHIFT

Rear view camere

(Option)

Monitor panel

Fuel control  dial

Brake pedal

Electronic controlled travel control lever

Blade control lever

Ripper control lever

Electronic Controlled

Clutch pressure

Modulation Valve (ECMV)

Conventional modulation valve

Time

Orbcomm controller

controller

Fan motor

VHMS

(Option)

Engine

Fan pump

Deceleration pedal

Engine controller

Lock up Torque convertor control valve

Torque converter

[Komnet]

P/T controller Transmission control, Torque converter control,

( )

Steering control

EPC

Transmission control valve

ECMV

Electronic controlled transmission

ECMV

Transmission output speed sensor

Auxiliary valve

Electronic controlled steering/brake system

W/E controller (Implement control)

ECMV

Dual tilt and pitch select valve (Option)

Acceleration sensor (Option)

Page 4

Rippers (optional)

● The variable giant ripper features a long sprocket center-to-ripper point distance, making ripping operation easy and effective while maintaining high penetration force.

● The variable giant ripper is a parallelogram single shank ripper ideal for ripping tough material. The ripping angle is variable, and the depth is adjustable in three stages by a hydraulically controlled pin puller.

● The multi-shank ripper is a hydraulically controlled parallelogram ripper with three shanks.

Large blade

Capacities of 18.5 m324.2 yd3(Semi-U dozer) and 22.0 m

28.8 yd3(U dozer) yield outstanding production. Hightensile-strength steel comprising the front and sides of the blade increase durability. The shape of the blade features high load hauling efficiency. The end bit with improved cutting performance is standard equipment.

Dual tilt dozer (optional)

The dual tilt dozer increases productivity while reducing operator effort.

● Optimum blade cutting angle for all types of materials and grades can be selected on-the-go for increased load and production.

● Digging, hauling, and dumping are easy and smooth with less operator fatigue.

● Dozer tilt angle and tilt speed are twice that of a conventional single tilt system.

Engine

The Komatsu SAA6D170E-5 engine delivers 474 kW 636 HP at 1800 rpm. The fuel-efficient Komatsu engine, together with the heavy machine weight, make the D375A-6 a superior crawler dozer in both ripping and dozing production. The engine is EPA Tier 3 and EU stage 3A emissions certified, and features direct fuel injection, turbocharger, air-to-air aftercooler and cooled EGR system to maximize fuel efficiency. To minimize noise and vibration, the engine is mounted to the main frame with rubber cushions.

Hydraulic drive radiator cooling fan

Fan rotation is automatically controlled depending on coolant and hydraulic oil temperature, saving fuel consumption and providing great productivity with a quiet operating environment.

Automatic transmission with lockup torque converter

A sharp reduction in fuel consumption and greater power train efficiency is achieved by the new automatic gearshift transmission and lockup torque converter.The automatic gearshift transmission selects the optimal gear range depending on the working conditions and load placed on the machine. This means the machine is always operating at maximum efficiency. (Manual gearshift mode is selectable with a switch)

K-Bogie undercarriage system

New K-Bogie undercarriage system combines prior advantages with new additional features.

Current features:

● K-Bogies that oscillate with two fulcrums assure large amount of track roller vertical travel. Impact load to undercarriage components is minimized and durability of components is improved since track rollers are always in contact with track link.

● Tr ack rollers follow track link movement to extend the undercarriage life.

● Excellent riding comfort is provided due to less vibration and shock when traveling over rough terrain.

Features on new K-Bogie undercarriage system:

● New K-Bogies with front and rear single bogies are utilized providing increased length of track on ground to improve machine stability and leveling performance.

● The oscillating idler and increased sprocket lead angle improve riding comfort when travelling over rough terrain.

RODUCTIVITY

EATURES

D375A

-6

CRAWLER DOZER

D375A-6 C RAWLER D OZER

Manual gearshift mode screen

Automatic gearshift mode screen

Gearshift mode selector switch

Working mode selector switch

Shoe slip control mode screen (optional)

Track shoe slip control mode (optional)

● Eliminates the need for the operator to constantly control engine power output with the decelerator pedal while ripping. Operator fatigue is substantially reduced.

● Maneuverability is improved because the operator is free to focus on the ripping application without having to monitor the track shoe slippage.

● Repair costs are significantly lowered and undercarriage life is prolonged with the reduction in track shoe slippage.

● The track shoe slip control system will contribute to lower fuel costs, because the engine output is automatically controlled

to optimum levels for operation.

Automatic/manual gearshift and shoe slip control (optional) selectable mode

Automatic or manual gearshift modes can be selected with ease to suit the work at hand by simply pressing the switch on the multi-monitor (The mode can be selected when the travel control joystick is at NEUTRAL.).

● Automatic gearshift mode

The mode for general dozing. When a load is applied, the gear automatically shifts down, and when the load is off, it automatically shifts up to a set maximum gear speed. This mode economizes both fuel and production where the torque converter lockup mechanism is actuated according to load, automatically selecting the optimum gear speed.

● Manual gearshift mode

The mode for dozing and ripping rough ground. When loaded, the gear automatically shifts down, but does not shift up when the load is off.

Working mode

This mode can be set to either “P mode” for the maximum power or “E mode” for energy saving operation. Combined with the automatic gearshift mode or manual gearshift mode, the working mode allows the operator to select the optimum machine operating condition for the work at hand. (The mode can be switched during operation.)

P mode

E mode

Engine

Torque converter

Transmission

Lockup “OFF”

Lockup “ON”

Fulcrum of major bogie

Fulcrum of minor bogie

Page 5

Preventative Maintenance

Preventative maintenance is the only way to ensure long service life from your equipment. That’s why Komatsu designed the D375A-6 with conveniently located maintenance points to make necessary inspections and maintenance quick and easy.

Low Maintenance Costs

Hexagonal pressurized cab

● The cab’s new hexagonal design and large tinted glass windows provide excellent front, side and rear visibility.

● Air filters and a higher internal air pressure combine to prevent dust from entering the cab.

Fresh air intake from rear of engine hood

The air conditioner air intake port is now located at the rear of the engine hood where there is minimal dust. As a result, the air inside the cab is always clean. Cleaning interval of the filter is greatly extended, and use of a new structure filter element facilitates cleaning and replacement.

Large multi-lingual LCD color monitor

A large user-friendly color monitor enables safe, accurate and smooth work. Improved screen visibility is achieved by use of TFT (Thin Film Transistor) liquid crystal display that can easily be read at various angles and lighting conditions. Simple and easy to operate switches. Industry first function keys facilitate multi-function operations. Display data in 10 languages to globally support operators around the world.

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

D375A-6’s cab mount uses a new cab damper mounting which further improves viscous damper and provides excellent shock and vibration absorption capacity with its long stroke. The cab damper mounting, combined with new K-bogie undercarriage, softens shocks and vibrations while traveling over adverse condition that are impossible to absorb with conventional cab mounting methods. The soft spring cab damper isolates the cab from machine body, suppressing vibrations and providing a quiet, comfortable operating environment.

New suspension seat

D375A-6 uses a new suspension seat. Fore and aft sliding rails and suspension spring increases strength and rigidity and reduces play of joints. New seat provides excellent support and riding comfort. Fore and aft sliding amount is designed to fit all operators. In addition, air suspension seat with seat isolator is optionally available, that reduces vertical and lateral vibrations more effectively.

Photo may include optional equipment.

Track link with wedge ring

New D375A-6 track links feature reduced press-fit force and a wedge ring. Conventional track pins are retained only with a large press-fit force. The new track link divides pin forces between the wedge ring and press-fit force.This results in easier service with reduced pin damage when turning pins and bushings. The result is improved undercarriage life and reduced maintenance cost through reduced wear, greater pin reusability, and reduced maintenance man-hours.

Highly reliable electric circuit

The electrical circuit reliability is increased by utilizing dust, vibration and corrosion resistant "DT connectors". The reinforced electrical wiring harnesses include a circuit breaker and are covered with a heat-resistant material to

increase mechanical strength, provide longer life, and protect the system from damage.

Flat face O-ring seals

Flat face O-ring seals are used to securely seal all hydraulic hose connections and to prevent oil leakage.

Enclosed hydraulic piping

Hydraulic piping for the blade tilt cylinder is completely housed in the push arm protecting it from damage.

Modular power train design

Power train components are sealed in a modular design that allows the components to be dismounted and mounted without oil spillage, making servicing work clean, smooth, and easy.

Maintenance-free disc brakes

Wet disc brakes require less maintenance.

ORKING

NVIRONMENT

D375A

-6

CRAWLER DOZER

D375A-6 C RAWLER D OZER

ASY

AINTENANCE

Multi-monitor with troubleshooting function to prevent critical machine troubles

Var ious meters, gauges, and warning functions are centrally arranged on the multi-monitor. Offers ease of start-up inspection and promptly warns the operator with a lamp and buzzer if any abnormalities should occur. In addition, countermeasures are indicated in 4 stage codes to ensure safety and prevent the machine from major problems. Replacement times for oil and filters are also indicated.

Centralized service station

To ensure convenient maintenance, the transmission and torque converter oil filters are both arranged next to the power train oil level gauge.

Oil pressure checking ports

Pressure checking ports for power train components are centralized to promote quick and simple diagnosis.

Enlarged engine room

Engine room space is enlarged by increasing engine hood height, facilitating maintenance of the engine and related equipment. Solid engine hood prevents dust and rain from entering and keeps the engine clean.

Gull-wing engine side covers

Gull-wing engine side covers facilitate engine maintenance and filter replacement. Side covers are a thick two-piece structure with bolt-on latch to improve durability and repairability.

Photo may include optional equipment.

Extra switches

Basic operation switches

Function switches

Indicators

Cab damper mounting

Maintenance warning screen

Abnormality warning screen

Maintenance List screen for replacement time display

Rubber Boot

Rubber

Silicon Oil

Spring

Track guiding guard

Wedge ring

Pin press fitting force + wedge ring holding force

Page 6

1110

STEERING SYSTEM

PCCS, joystick controlled, wet multiple-disc steering clutches are spring-loaded and hydraulically released. Wet multiple-disc, pedal/lever controlled steering brakes are spring-actuated hydraulically released and require no adjustment. Steering clutches and brakes are interconnected for easy, responsive steering.

Minimum turning radius. . . . . . . . . . . . . . . . . . . . . . . . . . 4.2 m 13'9"

UNDERCARRIAGE

Suspension . . . . . . . . . . . . . Oscillating equalizer bar and pivot shaft

Tr ack roller frame. . . . . . . . . . . . . . . Cylindrical, high-tensile-strength

steel construction

Rollers and idlers. . . . . . . . . . . . . . . . . . . . . . Lubricated track rollers

K-Bogie undercarriage

Lubricated track rollers are resiliently mounted to the track frame with a bogie suspension system whose oscillating motion is cushioned by rubber pads.

Extreme service track shoes

Lubricated tracks. Unique seals prevent entry of foreign abrasives into pin to bushing clearances to provide extended service life. Track tension is easily adjusted with grease gun.

Number of shoes (each side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Grouser height:

Single grouser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 mm 3.7"

Shoe width (standard) . . . . . . . . . . . . . . . . . . . . . . . . . . 610 mm 24"

Ground contact area . . . . . . . . . . . . . . . . . . . . . 48560 cm27,527 in

Ground pressure (tractor) . . . . . . . . . . 108 kPa 1.10 kg/cm215.6 psi

Number of track rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Number of carrier rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

COOLANT AND LUBRICANT CAPACITY (REFILL)

Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . .1200 ltr 317.0 U.S. gal

Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120 ltr 31.7 U.S. gal

Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86 ltr 22.7 U.S. gal

Torque converter, transmission,

bevel gear, and steering system . . . . . . . . .150 ltr 39.6 U.S. gal

Final drive (each side) . . . . . . . . . . . . . . . . . . . .65 ltr 17.1 U.S. gal

Extreme Additional Ground Ground

service shoes weight contact area pressure

710 mm 680 kg 56520 cm

126 kPa

1.28 kgf/cm

28" 1,500 lb 8,760 in

18.2 psi

810 mm 1360 kg 64480 cm

111 kPa

1.13 kgf/cm

32" 3,000 lb 9,990 in

16.0 psi

ENGINE

Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D170E-5

Type. . . . . . . . . . . . . . . . . . . . . 4-cycle, water-cooled, direct injection

Aspiration. . . . . . . . Turbocharged, air-to-air aftercooled, cooled EGR

Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Bore x stroke . . . . . . . . . . . . . . . . . 170 mm x 170 mm 6.69" x 6.69"

Piston displacement . . . . . . . . . . . . . . . . . . . . . . . 23.15 ltr 1,413 in

Governor . . . . . . . . . . . . . . . . . . All-speed and mid-range, electronic

Horsepower

SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . . Gross 474 kW 636 HP

ISO 9249 / SAE J1349* . . . . . . . . . . . . . . . . . Net 455 kW 610 HP

Rated rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1800 rpm

Fan drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic

Lubrication system

Method . . . . . . . . . . . . . . . . . . . . . . . Gear pump, force lubrication

Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-flow

*Net horsepower at the maximum speed of

radiator cooling fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

433 kW 580 HP

TORQFLOW TRANSMISSION

Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase torque converter with lockup clutch and a planetary gear, multiple-disc clutch transmission which is hydraulically actuated and force-lubricated for optimum heat dissipation. Gearshift lock lever and neutral safety switch prevent accidental starts.

FINAL DRIVES

Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket teeth are bolt-on for easy replacement.

Gear Forward Reverse

1st 3.5 km/h 2.2 mph 4.6 km/h 2.9 mph

2nd 6.8 km/h 4.2 mph 8.9 km/h 5.5 mph

3rd L 8.0 km/h 5.0 mph 9.7 km/h 6.0 mph

3rd 11.8 km/h 7.3 mph 15.8 km/h 9.8 mph

100

110

02468101214km/h

120

ton

400

500

600

300

200

100

700

800

900

1000

1100

0123456 87 mph

US ton

100

110

130

120

Travel Speed

Drawbar Pull

F3L

Manual  gearshift mode

Automatic  gearshift mode 

D375A-6

Power Shift

DRAWBAR PULL VS. SPEED

MAXIMUM USABLE PULL

DEPENDS ON TRACTION AND

WEIGHT OF TRACTOR

INCLUDING MOUNTED

EQUIPMENT

PECIFICATIONS

D375A

-6

CRAWLER DOZER

D375A-6 C RAWLER D OZER

AFETY &

AINTENANCE

EATURES

Highly mounted headlights

Illuminate the places in front of the machine more effectively. Use of HID lamps allows for performing night works more safely.

Uninterrupted power source *

Uninterrupted power source allows for 2-way radio communication at any time. Interior lights can be turned on with the starting switch at OFF position. (The lights do not work with the opening/closing of the cab door.)

Access lights *

Access lights are installed at two places (the right and left) of the front and at one place of the rear of the machine for safe getting on/off and servicing at night.

Working light for the engine bay *

A working light is installed inside the engine hood (left side) to facilitate night-time inspection and maintenance.

Isolator box *

Battery isolator and starting motor isolator are housed in the isolator box on the left side of the machine to facilitate cut-off of the battery circuit for the maintenance of the machine.

Rear view camera

Allows the operator to see the rear view image sent from it on the monitor. (Be sure to check the safety around the machine with your eyes. The rear view camera is a mere supplement device to check the rear safety.)

Manual emergency engine shutdown switches *

In case you urgently need to stop the engine, use either of the two switches installed in the cab and at the rear right of the machine. (Do not use the switches for normal engine stop.)

Provision for platform *

Provision for platform eliminates the need to modify the machine for installation of platform.

Platform with handrails and toe boards

Platform gives access to the side faces and the rear of the machine. Check and refilling of fuel and hydraulic oil, cleaning of cab window glass, check of cab lights, etc. can be performed with ease.

Canister-type breather *

Canister-type breathers are remotely arranged inside the left exterior cover to facilitate check and cleaning of the breather of each component.

A : Power train case B : Flywheel housing

C : Damper case

Evacuation service center *

Couplings (made by Wiggins) installed at the rear left of the machine allows for quick drain and charge of oil and coolant. The service center eliminates the need to get on/off the machine and to remove/install covers for the work, and realizes safe and quick servicing.

A : Engine oil B : Radiator coolant

C : Transmission oil D : Hydraulic oil

Concentrated sampling points *

Concentrated sampling points are remotely arranged in the right storage for the tool box to facilitate sampling of the oil and coolant from each component.

A : Engine oil B : Radiator coolant

C : Transmission oil D : Hydraulic oil

ABC

BACD

BDAC

Rear view camera

Camera image

Switch location (at the rear)

Switch location (inside the cab)

Jump-start connectors are also provided in the box in case the batteries run out.

A : Starter isolator B : Batteries isolator

C : Jump start receptacle

Komatsu designs our bulldozers with safety in mining operations. Following safety features are optionally available for D375A-6.

Safety features marked with * are standard equipment for D375A-6 with mining specification.

Page 7

D375A

-6

CRAWLER DOZER

G.L

DOZER EQUIPMENT

Blade capacities are based on the SAE recommended practice J1265.

*Ground pressure shows tractor with cab, ROPS, variable giant ripper, standard equipment and applicable blade.

DIMENSIONS

SEMI-U DOZER WITH GIANT RIPPER

OPERATING WEIGHT

Tr actor weight. . . . . . . . . . . . . . . . . . . . . . . . . . 53200 kg 117,290 lb

Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment.

Operating weight. . . . . . . . . . . . . . . . . . . . . . . . 71640 kg 157,940 lb

Including Semi-U tilt dozer, giant ripper, cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.

Ground pressure . . . . . . . . . . . . . . . . . 145 kPa 1.48 kg/cm221.0 psi

HYDRAULIC SYSTEM

Hydraulic control unit: Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.

Hydraulic control unit: All spool control valves externally mounted beside the hydraulic tank. Var iable piston pump with capacity (discharge flow) of 366 ltr/min 96.7 U.S. gal/min for imlement at rated engine rpm. Relief valve setting . . . for implement 27.5 MPa 280 kg/cm23,980 psi

Control valves: Spool control valve for Semi-U tilt dozer and Full-U tilt dozer.

Positions: Blade lift . . . . . . . . . . . . . . . Raise, hold, lower, and float

Blade tilt . . . . . . . . . . . . . . . . . . . . . Right, hold, and left

Additional control valve required for variable digging angle multi-shank ripper and giant ripper.

Positions: Ripper lift . . . . . . . . . . . . . . . . . . Raise, hold, and lower

Ripper tilt . . . . . . . . . . . . . Increase, hold, and decrease

Hydraulic cylinders . . . . . . . . . . . . . . . . . . . . . . Double-acting, piston

Hydraulic oil capacity (refill):

Semi-U dozer or U dozer . . . . . . . . . . . . . .

130 ltr 34.4 U.S. gal

Ripper equipment (additional volume):

Giant ripper. . . . . . . . . . . . . . . . . . . . . . . . . . 45 ltr 11.9 U.S. gal

Multi-shank ripper (variable) . . . . . . . . . . . . . 45 ltr 11.9 U.S. gal

Number of cylinders Bore

Blade lift 2 140 mm 5.5" Blade tilt 1 180 mm 7.1" Ripper lift 2 200 mm 7.9" Ripper tilt 2 180 mm 7.1"

A 2500 mm 8'2" B 4695 mm 15'5" C 4265 mm 14' D 2265 mm 7'5" E 3980 mm 13'1" F 10485 mm 34'5" G 3460 mm 11'4" H 1485 mm 4'10" I 1100 mm 3'7" J 4285 mm 14'1"

Ground Clearance: 610 mm 2'0"

Overall Blade Maximum Maximum Maximum

Weight

length with Blade length x height lift above drop below tilt Dozer Hydraulic

Ground

dozer capacity (with spill guard height) ground ground adjustment equipment oil

Pressure*

145 kPa

Semi-U 7780 mm 18.5 m

4695 mm x 2265 mm 1690 mm 735 mm 970 mm 10920 kg 45 kg

1.48 kgf/cm

dozer 25'6" 24.2 yd

15'5" x 7'5" 5'7" 2'5" 3'2" 24,070 lb 100 lb

21.0 psi

Strengthened

145 kPa

7780 mm 18.5 m

4695 mm x 2265 mm 1690 mm 735 mm 970 mm 11390 kg 45 kg

1.48 kgf/cm

Semi-U dozer 25'6" 24.2 yd

15'5" x 7'5" 5'7" 2'5" 3'2" 25,110 lb 100 lb

21.0 psi

Strengthened 148 kPa U dozer

8140 mm 22.0 m35140 mm x 2265 mm (2525 mm)

1690 mm 735 mm 1065 mm 12420 kg 45 kg

1.51 kgf/cm

with spill guard

26'8" 28.8 yd

16'10" x 7'5" (8'3") 5'7" 2'5" 3'6" 27,380 lb 100 lb

21.4 psi 145 kPa

Dual tilt 7780 mm 18.5 m

4695 mm x 2265 mm 1690 mm 735 mm 1185 mm 11100 kg 50 kg

1.48 kgf/cm

Semi-U dozer 25'6" 24.2 yd

15'5" x 7'5" 5'7" 2'5" 3'11" 24,470 lb 110 lb

21.0 psi

Strengthened 146 kPa Dual tilt

7780 mm 18.5 m

4695 mm x 2265 mm 1690 mm 735 mm 1185 mm 11570 kg 50 kg

1.49 kgf/cm

Semi-U dozer

25'6" 24.2 yd

15'5" x 7'5" 5'7" 2'5" 3'11" 25,510 lb 110 lb

21.2 psi

Strengthened 148 kPa dual tilt U dozer

8140 mm 22.0 m35140 mm x 2265 mm (2525 mm)

1690 mm 735 mm 1300 mm 12600 kg 50 kg

1.51 kgf/cm

with spill guard

26'8" 28.8 yd

16'10" x 7'5" (8'3") 5'7" 2'5" 4'3" 27,780 lb 110 lb

21.4 psi

Page 8

D375A-6 C RAWLER D OZER

● Alternator, 60 ampere/24 V

● Back-up alarm

● Batteries, 170 Ah/2 x 12 V

● Blower cooling fan

● Color monitor

● Decelerator pedal

● Dry-type air cleaner with dust evacuator

and dust indicator

● Eight-roller track frames

● Electrical dust indicator

● Final drive case wear guard

● Hinged front mask

● Hinged underguards with front pull hook

● Horn, warning

● Hydraulics for dozer

● Hydraulic track adjusters

● Lighting system (including four front

and two rear lights)

● Lockup torque converter

● Muffler with rain cap

● PCCS lever steering control

● Perforated side covers

● Radiator reserve tank

● ROPS brackets

● Segmented sprockets

● Shoes, 610 mm 24" extreme service,

single-grouser

● Starting motors, 2 x 7.5 kW/24 V

● Suspension seat

● TORQFLOW transmissions

● Tr ack roller guards

● Wet steering clutches

STANDARD EQUIPMENT

OPTIONAL EQUIPMENT

● Air conditioner with heater and defroster

● Alternator, 90 ampere/24 V

● Batteries, 200 Ah/2 x 12 V

● Car stereo

● Counterweight

● Double wiper for cab door

● Dual tilt dozer

● End bits

—Heavy wall type

● Fast fill fuel system

● Fire extinguisher

● HID lights

● High mount head lights

● Hitch

● Hydraulics for ripper

● Inspection light

● Light for ripper point

● Lunch box holder

● Mirror, rearview

● Panel cover

● Rear view monitoring system

● Seat

Air suspension seat —Fabric seat Air suspension seat with seat isolator —Fabric seat Suspension seat —Fabric seat —Fabric seat, high backrest

● Seat belt

● Shoes:

—710 mm 28" —810 mm 32"

● Spare parts for first service

● Spill guard for Semi-U dozer

● Starting motors, 2x11kw/24V

● Strengthened Semi-U blade

● Strengthened U blade with spill guard

● Sun visor

● Tool kit

● Tr ack shoe slip control system

● Vandalism protection kit (cover locks)

● VHMS or VHMS with Orbcomm

Mining specificaions

● Access lights

● Canister-type breather

● Concentrated sampling points

● Evacuation service center

● Group Lube for blade or ripper

● Isolator box

● Manual emergency engine shutdown

switches

● Platform with handrails and toe boards

● Provision for platform

● Uninterrupted power source

● Working light for the engine bay

ROPS*:

Weight . . . . . . . . . . . . . . . . 700 kg 1,540 lb

Roof dimensions:

Width . . . . . . . . . . . . . . . . 1980 mm 6'6"

Height from

compartment floor . . . . . . . 1872 mm 6'2"

*Meets ISO 3471 and SAE J1040 APR88, ROPS

standards.

Steel cab*:

Weight . . . . . . . . . . . . . . . . 570 kg 1,260 lb

Dimensions:

Length . . . . . . . . . . . . . . . 1875 mm 6'2"

Width . . . . . . . . . . . . . . . . 1740 mm 5'9"

Height from compartment

floor to ceiling . . . . . . . . . . 1630 mm 5'4"

*Meets ISO 3449 FOPS standard.

Multi-shank ripper:

Hydraulically controlled parallelogram ripper with three shanks. Ripping angle is steplessly adjustable.

Weight (including hydraulic control unit

and oil) . . . . . . . . . . . .6800 kg 14,990 lb

Beam length . . . . . . . . . . . . .2910 mm 9'7"

Maximum lift above ground . .1135 mm 3'9"

Maximum digging depth . . . .1140 mm 3'9"

Variable giant ripper:

Var iable, parallelogram single-shank ripper ideal for ripping up tough material. Ripping angle is variable. Ripping depth is adjustable in three stages by a hydraulically controlled pin puller.

Weight (including hydraulic control unit

and oil).........................6200 kg 13,670 lb

Beam length...........................1453 mm 4'9"

Maximum lift above ground....1100 mm 3'7"

Maximum digging depth.......1485 mm 4'10"

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