komatsu D375A-6 SPECIFICATIONS

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
71640 kg
157,940 lb
Photo may include optional equipment.
D375A-6
C
RAWLER
D
OZER
D
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.
W
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
3
Full-U: 22.0 m328.8 yd
3
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.
54
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 DOWN switch
Press UP 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 DOWN switch
Press UP switch
Press UP switch
UP
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
C
ONTROL
F
EATURES
D375A
-6
CRAWLER DOZER
D375A-6 C RAWLER D OZER
UP SHIFT
DOWN SHIFT
LH
R
RH
F
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
EPC
Transmission control valve
ECMV
ECMV
ECMV
ECMV
Electronic controlled transmission
ECMV
Transmission output speed sensor
Auxiliary valve
Electronic controlled steering/brake system
W/E controller (Implement control)
ECMV
ECMV
ECMV
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
3
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.
7
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.
6
P
RODUCTIVITY
F
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
98
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.
W
ORKING
E
NVIRONMENT
D375A
-6
CRAWLER DOZER
D375A-6 C RAWLER D OZER
E
ASY
M
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
2
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
2
126 kPa
1.28 kgf/cm
2
28" 1,500 lb 8,760 in
2
18.2 psi
810 mm 1360 kg 64480 cm
2
111 kPa
1.13 kgf/cm
2
32" 3,000 lb 9,990 in
2
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
3
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
70
80
90
100
110
60
50
40
30
20
10
0
02468101214km/h
120
ton
kN
400
500
600
300
200
100
0
700
800
900
1000
1100
0123456 87 mph
70
60
50
40
30
20
10
0
US ton
80
90
100
110
130
120
Travel Speed
Drawbar Pull
F1
F1
F2
F3L
F2
F3
F3
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
S
PECIFICATIONS
D375A
-6
CRAWLER DOZER
D375A-6 C RAWLER D OZER
N
EW
S
AFETY &
M
AINTENANCE
F
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
A
B
C
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
J
I
H
F
E
B
A
C
D
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
3
4695 mm x 2265 mm 1690 mm 735 mm 970 mm 10920 kg 45 kg
1.48 kgf/cm
2
dozer 25'6" 24.2 yd
3
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
3
4695 mm x 2265 mm 1690 mm 735 mm 970 mm 11390 kg 45 kg
1.48 kgf/cm
2
Semi-U dozer 25'6" 24.2 yd
3
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
2
with spill guard
26'8" 28.8 yd
3
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
3
4695 mm x 2265 mm 1690 mm 735 mm 1185 mm 11100 kg 50 kg
1.48 kgf/cm
2
Semi-U dozer 25'6" 24.2 yd
3
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
3
4695 mm x 2265 mm 1690 mm 735 mm 1185 mm 11570 kg 50 kg
1.49 kgf/cm
2
Semi-U dozer
25'6" 24.2 yd
3
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
2
with spill guard
26'8" 28.8 yd
3
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"
1312
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