D375A-6 - Komatsu America Corp.

NET HORSEPOWER
455 kW 610 HP @ 1800 rpm
OPERATING WEIGHT
71640 kg 157,940 lb
D375A-6
D
375A
CRAWLER DOZER
Photos may include optional equipment.
D375A-6
CraWler dozer
Walk-around
SAA6D170E-5 turbocharged aftercooled
diesel engine provides a net output of 455 kW 610 HP
with excellent productivity. This machine is EPA Tier 3 and
EU stage 3A emissions certified (p.6).
Preventative maintenance
● Centralized Service Station
● Enclosed Hydraulic Piping
● Modular Power Train Design
● Oil Pressure Checking Ports (p.9)
● Multi-Monitor with Self Diagnostic Function
● KOMTRAX Plus
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 with
components designed to work and wear
together as a system for higher production,
greater reliability, and more versatility.
Hydraulically driven radiator cooling fan
controlled automatically, reduces fuel consumption
and operating noise levels (p.6).
Automatic transmission with lockup torque
converter increases speed and power to improve fuel
consumption and productivity (p.6).
High efficiency blade
provides a new blade profile to maximize
prouctivity. Semi-U dozer 18.5 m3 24.2 yd3/
Full-U dozer 22.0 m3 28.8 yd3
Simple hull frame
and monocoque track
frame with pivot shaft for
greater reliability.
The Dual tilt dozer
increases productivity
while reducing operator
effort (p.6).
Track link design
Low-drive, long-track, eight roller undercarriage
reduces maintenance cost by
making turning pins easier, with
improved pin reuse (p.9).
provides outstanding grading ability and stability.
Track shoe slip control system
reduces operator fatigue (p.7).
2
C r aW l e r d o z e r
D375A-6
net HorsePoWer
455kW610 HP @1800rpm
Hexagonal designed cab includes:
● Spacious interior
● Comfortable ride with cab damper mounting
● Excellent visibility
● High capacity air conditioning system
● Palm Command Control System (PCCS) joystick controls
● Pressurized cab
● Adjustable armrests
● Travel control console integrated with operator seat (p.4)
oPerating WeigHt
71640kg157,940 lb
Blade CaPaCity
Semi-U:18.5m3 24.2 yd3
Full-U:22.0m3 28.8 yd3
Large TFT LCD monitor
● Easy-to-see and use large 7" multi-color monitor (p.8)
● Can be displayed in 10 languages for global support
● Full diagnostic capability
TFT : Thin Film Transistor
Electronic Controlled Modulation Valve
(ECMV) controlled steering clutch/brake system
facilitates smooth and shockless steering operation (p.5).
LCD : Liquid Crystal Display
Palm Command Control System (PCCS)
● 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 (p.5)
Rear attachments (optional)
● Variable giant ripper
● Multi-shank ripper
● Counterweight
KOMTRAX Plus
provides efficent monitoring of machine
conditions for maximum productivity (p.9).
Photosmayincludeoptionalequipment.
K-Bogie undercarriage system
Extra-low machine profile
improves traction, component durability,
and operator comfort (p.6).
provides excellent machine balance
and low center of gravity.
3
D375A-6
CraWler dozer
Control Features
Komatsu’s ergonomically designed control system “PCCS” creates an operating environment
with “complete operator control”.
Human-Machine Interface
Palm Command
electronic Controlled
travel Control Joystick
Palm Command PPC
Controlled Blade Control
Joystick
left-hand Joystick
Ergonomicallydesignedpalm
Thebladecontroljoystickuses
LH
commandtraveljoystick
theProportionalPressure
UP SHIFT
providestheoperatorwitha
R
F
relaxedpostureandsuperb
controlimprovingoperator
Blade and ripper
Control Joysticks
Control(PPC)valveand
joystick,similartothetravel
DOWN SHIFT
controljoystick.PPC
RH
comfort.Transmissiongear
controlcombinedwiththe
shiftingissimplycarriedoutwiththumbpushbuttons.
highlyreliableKomatsuhydraulicsystemenablessuperb
control.Dualtiltandpitchoperationareenabledby
Fully adjustable air suspension seat and travel
Control Console
pressingaswitchwiththethumb.
Fuel Control dial
Forimprovedrearvisibilityduringthereturnportionofthe
cycle,theoperatorcanadjusttheseat15°totheright.The
EngineRPMiscontrolledbyelectricsignals,providingease
transmissionandsteeringcontrolsmovewiththeseatfor
ofoperationandeliminatingmaintenanceoflinkageand
optimumoperatorcomfort.Thetravelcontrolconsoleis
joints.RPMiscontrolledbysimplyturningadial.
adjustablefore,aft,andforheight.Thearmrestis
Height adjustable Blade Control armrest
independentlyadjustableupanddown,providingoptimum
operationpostureforalloperators.Theoperatorseatis
Bladecontrolarmrestisheightadjustablewithoutanytools,
inthreestages,providingtheoperatorwithfirmarm
alsotiltableforfacilitatingdownhilldozing.
supportandidealcomfort.
Facing Front
Position adjustable ripper Control lever
Rippercontrolleverisadjustable,providingoptimum
operatorpostureduringalltypesofrippingoperations.
outline of electronic Control system
Rear view camera
Monitor panel
Fuel
control
dial
Brake pedal
Electronic
controlled
travel control
lever
Blade control
lever
Ripper control
lever
When turned 15°
Orbcomm
controller
Deceleration
pedal
[Komnet]
VHMS
controller
)
Transmission
control valve
W/E controller
(Implement control)
Auxiliary
valve
ECMV
ECMV
ECMV
ECMV
ECMV
Lock up
Torque
converter
control valve
ECMV
ECMV
Fan
pump
P/T controller
Transmission control,
Torque converter control,
Steering control
(
ECMV
ECMV
ECMV
ECMV
Engine
controller
Dual tilt and
pitch select
valve
Acceleration
sensor
Transmission
output speed
sensor
Fan
motor
Engine
4
Electronic controlled
Torque converter transmission
Electronic controlled
steering/brake system
D375A-6
C r aW l e r d o z e r
Power Train Electronic Control System
smooth operation
TheD375A-6utilizesahighlyefficientpowertrainelectroniccontrolsystem.Thecontrollerregisterstheamountofoperator
control(movementsofleverandoperationofswitches)alongwithmachineconditionsignalsfromeachsensortoaccurately
calculatethecontrolofthetorqueconverter,transmission,steeringclutchesandbrakesforoptimizedmachineoperation. The
easeofoperationandproductivityofthenewD375A-6isgreatlyimprovedthroughthesenewfeatures.
electronic Controlled Modulation Valve (eCMV) transmission
Thecontrollerautomaticallyadjustseachclutchengagementdependingontravelconditionssuch
asgearspeed,RPMandshiftingpattern.Thisprovidesshocklessandsmoothclutchengagement,
improvedcomponentreliability,extendedcomponentlife,andoperatorridecomfort.
electronic Controlled Modulation Valve (eCMV) steering Clutches/Brakes
Sensorsmonitormachineoperatingconditionsandelectronicallycontrolthesteeringclutchesand
brakes.Monitoringapplicationparameterssuchasinclineangleofslopeanddegreeofloadprovidessmoothandeasy
operationbyreducingcounter-steeringondownhilltravel,etc.
effect of eCMV steering Clutches/Brake Control
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.
Preset travel speed selection Function
Automatic
gearshift mode
Presettravelspeedenablestheoperatorto
selectforeandafttravelspeedsamongfour
Press DOWN switch
Press UP switch
F1-R2 MODE
presetpatterns.Whenthegearshiftpatternis
settoeither<F1-R1>,<F1-R2>,<F2-R2>or
F1-R1 MODE
UP
DOWN
<F2-R3L>,inautomaticgearshiftmode,the
Press DOWN switch
Press UP switch
F2-R2 MODE
Press DOWN switch
Manual
gearshift mode
F1-R1 MODE
Press DOWN switch
Press UP switch
F1-R2 MODE
Press DOWN switch
Shoe slip control
mode (optional)
F1-R1 MODE
Press DOWN switch
Press UP switch
F1-R2 MODE
Press UP switch
F2-R2 MODE
Press UP switch
F2-R3L MODE
gearisautomaticallyshifted.Thisfunction
reducesgearshiftingtimeduringrepeated
Heavy Load
Light Load
round-tripoperations.
auto downshift Function
Thecontrollermonitorsenginespeedandtravelspeed.When
loadisappliedandmachinetravelspeedisreduced,the
Actuated on Heavy
Load or Steep Slope
transmissionautomaticallydownshiftstotheoptimumgearspeed
toprovidehighfuelefficiency.Thisfunctionprovidescomfortable
operationandhighproductivitywithoutmanualdownshifting.
5
D375A-6
CraWler dozer
ProduCtiVity Features
Komatsu’s"ecot3"enginesare
designedtodeliveroptimum
performanceunderthe
toughestofconditions,while
meetingthemoststringent
environmentalregulations.ThisengineisEPATier3,
EUStage3AandJapanemissionscertified;"ecot3"-ecology
andeconomycombinewithKomatsutechnologytocreatea
highperformanceenginewithoutsacrificingpoweror
productivity.
engine
TheKomatsuSAA6D170E-5enginedeliversanetoutputof
455kW 610 HP at1800rpm.Thefuel-efficientKomatsu
k-Bogie undercarriage system
K-Bogieswithfrontandrearsinglebogiesareutilizedto
increasethelengthoftrackongroundimprovingmachine
stabilityandlevelingperformance.Anoscillatingidlerand
increasedsprocketleadangleimproveridingcomfortwhen
travelingoverroughterrain.K-Bogiesoscillatewithtwo
fulcrumsassuringalargeamountoftrackrollerverticaltravel.
Impactloadtoundercarriagecomponentsisminimizedand
durabilityofcomponentsisimprovedsincetrackrollersare
alwaysincontactwithtracklinks.Trackrollersfollowtracklink
movementtoextendtheundercarriagelife.Excellentriding
comfortisprovidedduetolessvibrationandshockwhen
travelingoverroughterrain.
engine,togetherwiththeheavymachineweight,makethe
D375A-6asuperiorcrawlerdozerinbothrippingand
dozingproduction.TheengineisEPATier3andEUstage
3Aemissions certified,andfeaturesdirectfuelinjection,
turbocharger,air-to-airaftercoolerandcooledEGRsystemto
maximizefuelefficiency.Tominimizenoiseandvibration,the
engineismountedtothemainframewithrubbercushions.
Hydraulically driven radiator Cooling Fan
Fanrotationisautomaticallycontrolleddependingoncoolant
andhydraulicoiltemperatures,savingfuelandproviding
increasedproductivitywithaquietoperatingenvironment.
High efficiency Blade
Capacitiesof18.5m3 24.2 yd3 (Semi-Udozer)and
22.0m3 28.8 yd3 (Udozer)yieldoutstandingproduction.
automatic torque Converter lockup system
High-tensile-strengthsteelcomprisingthefrontandsidesof
Forgreaterefficiencyduringlongpushes,thelockupmode
thebladeincreasedurability.Anewbladeprofilefeatures
allowsthesystemtoautomaticallyengagethetorque
highloadhaulingefficiencytomaximizeproductivity.The
converterlockupclutch.Lockingupthetorqueconverter
bladesectionprofilehasbeenchangedtoequalthatofthe
transmitsalltheenginepowerdirectlytothetransmission,
nextclasssizedozerandtheheightofthebladeshoulder
increasinggroundspeedandthusachievingefficienciesequal
hasbeenincreasedtoreducespillage.Thisincreasesthe
toadirectdrive.Theresultsofthisefficientuseofengine
amountofholdsoilthebladeiscapableofcarrying.
powerarelessfuelconsumptionandfastercycletimes.
Improvedendbitsprovidebetterpenetrationandextended
wearlife.
dual tilt dozer
Thedualtiltdozerincreasesproductivitywhilereducing
operatoreffort.Optimumbladecuttingangleforalltypesof
materialsandgradescanbeselectedon-the-gofor
increasedloadandproduction.Digging,hauling,and
dumpingaresmoothandeasywithlessoperatorfatigue.
Dozertiltangleandtiltspeedaretwicethatofaconventional
singletiltsystem.
6
C r aW l e r d o z e r
D375A-6
rippers
Thevariablegiantripperisaparallelogramsingleshankripperidealforrippingtough
material.Therippingangleisvariable,andthedepthisadjustableinthreestagesbya
hydraulicallycontrolledpinpuller.Thevariablegiantripperfeaturesalongsprocketcenterto-ripperpointdistance,makingrippingoperationeasyandeffectivewhilemaintaininghigh
penetrationforce.Themulti-shankripperisahydraulicallycontrolledparallelogramripper
withthreeshanks
automatic/Manual gearshift and shoe slip Control
Automaticormanualgearshiftmodescanbeeasilyselectedtosuittheworkathandbysimplypressingtheswitchonthe
multi-monitor.(ThemodecanbeselectedwhenthetravelcontroljoystickisatNEUTRAL.)
automatic gearshift mode
Themodeforgeneraldozing.Whenaloadisapplied,thegearautomaticallyshiftsdown,andwhentheloadisoff,it
automaticallyshiftsuptoasetmaximumgearspeed.Thismodeeconomizesbothfuelandproductionwherethetorque
converterlockupmechanismisactuatedaccordingtoload,automaticallyselectingtheoptimumgearspeed.
Manual gearshift mode
Themodefordozingandrippingroughground.Whenloaded,thegearautomaticallyshiftsdown,butdoesnotshiftupwhen
theloadisoff.
Working Mode
Thismodecanbesettoeither“Pmode”formaximumproduction(power)or“Emode”forenergysavingoperation(economy).
Combinedwiththeautomaticgearshiftmodeormanualgearshiftmode,theworkingmodeallowstheoperatortoselectthe
optimummachineoperatingconditionfortheworkathand.(Themodecanbeswitchedduringoperation.)
Working mode
selector switch
P mode
e mode
track shoe slip Control Mode
Eliminatestheneedfortheoperatortoconstantlycontrolenginepoweroutputwiththedeceleratorpedalwhileripping
substantiallyreducingoperatorfatigue.Maneuverabilityisimprovedbecausetheoperatorisfreetofocusontheripping
applicationwithouthavingtomonitorthetrackshoeslippage.Repaircostsaresignificantlyloweredandundercarriagelifeis
extendedwiththereductionintrackshoeslippage.Thetrackshoeslipcontrolsystemwillcontributetolowerfuelcosts
becausetheengineoutputisautomaticallycontrolledtooptimumlevelsforoperation.
gearshift mode
selector switch
automatic
gearshift
mode screen
Manual
gearshift
mode screen
shoe slip control
mode screen
7
D375A-6
CraWler dozer
easy MaintenanCe
Preventative Maintenance
Preventativemaintenanceistheonlywaytoensurelongservicelifefromyourequipment.That’swhyKomatsudesignedthe
D375A-6withconvenientlylocatedmaintenancepointstomakenecessaryinspectionsandmaintenancequickandeasy.
Centralized service station
koMtraX Plus
Toensureconvenientmaintenance,thetransmission
Aspartofacompleteserviceandsupportprogram,
andtorqueconverteroilfiltersarebotharrangednextto
Komatsuequipseveryminingandquarrysizedmachine
thepowertrainoillevelgauge.
withKOMTRAXPlus.Byusingasatellite-based
communicationsystem,KOMTRAXPlusoffersanew
Multi-Monitor with self-diagnostic Function
visionofmonitoringyourvaluableassetsbyproviding
Variousmeters,gauges,andwarningfunctionsare
insighttocriticaloperatingmetricsandinformationthatcan
centrallyarrangedonthemulti-monitor.Thisofferseaseof
beusedtoincreaseavailability,lowerowningand
start-upinspectionandpromptlywarnstheoperatorwitha
operatingcostsandmaximizefuelefficiency.
lampandbuzzerifanyabnormalitiesshouldoccur.In
TheKOMTRAXPlusinformationavailableon
addition,countermeasuresareindicatedin4-stagecodes
MyKomatsu.comallowsservicepersonnelandasset
tohelppreventthemachinefromincurringmajor
ownerstoreviewcautions,operationaldata,fuel
problems.Replacementtimesforoilandfiltersarealso
consumption,payloadsandkeycomponentmeasurements
indicated.
providedinformsoftrends.WithKOMTRAXPlus,
Maintenance warning screen
abnormality warning screen
Maintenance list screen for
replacement time display
gull-Wing engine side Covers
Dualinsulatedgull-wingenginesidecoversfacilitate
enginemaintenanceandfilterreplacement.Sidecovers
arethicktwo-piecestructureswithbolt-onlatchesto
improvedurabilityandrepairability.
oil Pressure Checking Ports
Pressurecheckingportsforpowertraincomponentsare
centralizedtopromotequickandsimplediagnosis.
enlarged engine Compartment
Enginecompartmentspaceisenlargedbyincreased
engine
hoodheight,facilitatingmaintenanceoftheengineand
relatedequipment.Solidenginehoodpreventsdust
andrainfromenteringandhelpskeepstheengineclean.
8
knowledgebecomesthepowertofuelyourproductivity.
C r aW l e r d o z e r
D375A-6
Low Maintenance Costs
track link with Wedge ring
NewD375A-6tracklinksfeaturereducedpress-fitforce
Flat Face o-ring seals
andawedgering.Conventionaltrackpinsareretained
FlatfaceO-ringsealsareusedtosecurelysealall
onlywithalargepress-fitforce.(Thenewtracklinkdivides
hydraulichoseconnections.
pinforcesbetweenthewedgeringandpress-fitforce.)
Thisenableseasierservicewithreducedpindamage
enclosed Hydraulic Piping
whenturningpinsandbushings.Theresultisimproved
Hydraulicpipingforthebladetiltcylinderiscompletely
undercarriagelifeandreducedmaintenancecostthrough
housedinthepusharmprotectingitfromdamage.
reducedwear,greaterpinreusability,andreduced
maintenanceman-hours.
Modular Power train design
Powertraincomponentsaresealedinamodulardesign
thatallowsthecomponentstoberemovedandreplaced
withoutoilspillage,makingservicingworkclean,smooth,
andeasy.
Maintenance-Free disc Brakes
Wetdiscbrakesareadjustmentfreeandprovide
excellentservicelife.
Highly reliable electric Circuits
Theelectricalcircuitreliabilityisincreasedbyutilizingdust,
vibrationandcorrosionresistant"DTconnectors".The
reinforcedelectricalwiringharnessesincludecircuit
breakersandarecoveredwithaheat-resistantmaterialto
increasemechanicalstrength,providelongerlife,and
protectthesystemfromdamage.
9
D375A-6
CraWler dozer
Working enVironMent
Photomayincludeoptionalequipment.
Photomayincludeoptionalequipment.
Hexagonal Pressurized Cab
Thecab’shexagonaldesignandlargetintedglasswindows
Comfortable ride with Cab damper Mounting
and k-Bogie undercarriage
provideexcellentfront,sideandrearvisibility.Airfiltersanda
TheD375A-6’scabmountusesacabdamper
higherinternalairpressurecombinetohelppreventdust
mountingwhich providesexcellentshockandvibration
fromenteringthecab.
absorptioncapacitywithitslongstroke.Thecabdamper
mounting,combinedwiththeK-bogieundercarriage,
Fresh air intake from rear of engine Hood
softensshocksandvibrationswhiletravelingoveradverse
Theairconditionerairintakeportislocatedattherearofthe
conditions.Thisisotherwiseimpossibletoabsorbwith
enginehoodwherethereisminimaldust.Thecleaning
conventionalcabmountingmethods.Thesoftspringcab
intervalofthefilterisgreatlyextended,anduseofanew
damperisolatesthecabfromthemachinebody,
structurefilterelementfacilitatescleaningandreplacement.
suppressingvibrationsandprovidingaquiet,comfortable
operatingenvironment.
large Multi-lingual lCd Color Monitor
Anewlargeuser-friendlycolormonitorenablesaccurateand
smoothwork.Improvedscreenvisibilityisachievedbythe
useofaThinFilmTransistor(TFT)liquidcrystaldisplaythat
Cab damper Mounting
Rubber Boot
Rubber
caneasilybereadatvariousanglesandlightingconditions.
Simpleandeasytooperateswitches.Functionkeysfacilitate
multi-functionoperations.Capableofdisplayingdatain10
Silicone Oil
languagestogloballysupportoperatorsaroundtheworld.
Spring
simple, durable Hydraulic system
UtilizingavariablepistonpumpandClosed-centerLoad
SensingSystem(CLSS),thehydraulicsystemhasbeen
greatlysimplified.Thevariablepistonpumpsuccessfully
applieshydraulicpowerasneededtothebladeandripper.
Theamountofserviceablepartsandopportunityfor
additionalmaintenanceorfailuresaregreatlyreduced.
10
oPtional sPeCiFiCations
High Mounted Headlights
isolator Box
Illuminatetheplacesinfrontofthe
Batteryandstartingmotorisolatorsarehousedintheisolator
machinemoreeffectively.Useofoptional
boxontheleftsideofthemachinetofacilitatecut-offofthe
HIDlampsfurtherimprovesvisibility.
batterycircuitformaintenanceofthe
machine.Jump-startconnectorsarealso
rear View Camera
providedintheboxincaseofpower
A
Improvesrearvisibilityandiseasily
failure.
B
viewableonthemulti-monitor.
A:Starterisolator
C
Machineiscapableofmounting
Rearviewcamera
B:Jumpstartreceptacle
3externalcameras.
C:Batteryisolator
Manual engine shutdown
switches
Canister-type Breathers
B A
Canister-typebreathersareremotely
Incaseofurgentneedtostopthe
engine,twoshutdownswitchesare
C
arrangedinsidetheleftexteriorcoverto
Switchlocation(insidethecab)
facilitatecheckandcleaningofthe
provided,inthecabandattheright
breatherofeachcomponent.
rearofthemachine.
A:Powertraincase B:Flywheelhousing
C:Dampercase
Switchlocation(attherear)
Maintenance service Center
uninterrupted Power source
Couplings(madebyWiggins)
Uninterruptedpowersourceallowsfor2-wayradio
installedattherearleftofthe
communicationatanytime.(Interiorlightscanbeturnedon
machineenablequickdrainand
withthestartingswitchatOFFposition.)
changeofoilandcoolant.TheFast
access lights
E
D C A
Fuelfill(alsobyWiggins)enablesrefuelingfromground
level.Theservicecentereliminatestheneedtogeton/offthe
Accesslightsareinstalledatthefront
machineandtoremove/installcoverstoperformfluid
(2,rightandleft)and(1)attherearof
maintenance.
themachine.
B
A:Engineoil
B:Radiatorcoolant
C:Transmissionoil D:HydraulicoilE:FastFuelFill
Concentrated sampling Points
Work light for the engine Compartment
Concentratedsamplingpointsare
Aworklightisinstalledinsidethe
remotelyarrangedinthetoolbox
enginehood(leftside)tofacilitate
storageareatofacilitatesamplingof
night-timeinspectionandmaintenance.
theoilandcoolantfromeach
C A
D B
component.
A:Engineoil
Provision for Platforms
B:Radiatorcoolant
C:Transmissionoil D:Hydraulicoil
Provisionforplatformseliminatestheneedtomodifythe
machineforfutureinstallationofplatforms.
Platforms with Handrails and
Foot Barriers
Centralized grease Points for
Blade Cylinder yoke and
ripper Mount Pin
Centralizedgreasepointsenable
Optionalplatformscanbeorderedto
lubricationofbothbladeandripper
giveaccesstothesidefacesandthe
fromgroundlevel.
rearofthemachine.
11
D375A-6
C r aW l e r d o z e r
sPeCiFiCations
ENGINE
STEERING SYSTEM
Model ............................KomatsuSAA6D170E-5*
Type ................... 4-cycle,water-cooled,directinjection
Aspiration ......Turbocharged,air-to-airaftercooled,cooledEGR
Numberofcylinders .................................... 6
Borexstroke................ 170mmx170mm 6.69" x 6.69"
Pistondisplacement ...................... 23.15ltr 1,413 in3
Governor .................All-speedandmid-range,electronic
Horsepower
SAEJ1995 ........................Gross474kW 636 HP
ISO9249/SAEJ1349 .................Net455kW 610 HP
Hydraulicfanatmaximumspeed.........Net433kW 580 HP
Ratedrpm ................................... 1800rpm
Fandrivetype ..................................Hydraulic
Lubricationsystem
Method ......................Gearpump,forcelubrication
Filter .........................................Full-flow
*EPATier3andEUStage3Aemissionscertified.
TORQFLOW TRANSMISSION
KomatsuTORQFLOWtransmissionconsistsofawater-cooled,
3-element,1-stage,1-phasetorqueconverterwithlockupclutch
andaplanetarygear,multiple-discclutchtransmissionwhichis
hydraulicallyactuatedandforce-lubricatedforoptimumheat
dissipation.Gearshiftlockleverandneutralsafetyswitchhelp
preventaccidentalstarts.
Gear
1st
2nd
3rd L
3rd
Forward
3.5 km/h
2.2 mph
6.8 km/h
4.2 mph
8.0 km/h
5.0 mph
11.8 km/h
7.3 mph
US ton
kN
130
1100
120
Drawbar Pull
110
1000
100
900
90
800
80
700
70
600
Reverse
4.6 km/h
2.9 mph
8.9 km/h
5.5 mph
9.7 km/h
6.0 mph
15.8 km/h
9.8 mph
ton
120
D375A-6
Power Shift
110
100
DRAWBAR PULL VS. SPEED
MAXIMUM USABLE PULL
DEPENDS ON TRACTION AND
WEIGHT OF TRACTOR
INCLUDING MOUNTED
EQUIPMENT
90
80
70
F1
Minimumturningradius ........................ 4.2m 13'9"
UNDERCARRIAGE
Suspension............Oscillatingequalizerbarandpivotshaft
Trackrollerframe .............Cylindrical,high-tensile-strength
steelconstruction
Rollersandidlers ....................Lubricatedtrackrollers
K-Bogieundercarriage
.Lubricatedtrackrollersareresilientlymountedtothetrack
framewithabogiesuspensionsystemwhoseoscillatingmotion
iscushionedbyrubberpads.
Extremeservicetrackshoes
.Lubricatedtracks.Uniquesealsprevententryofforeign
abrasivesintopintobushingclearancestoprovideextended
servicelife.Tracktensioniseasilyadjustedwithgreasegun.
Numberofshoes(eachside) ........................... 41
Grouserheight:
Singlegrouser ............................. 93mm 3.7"
Shoewidth(standard) ........................ 610mm 24"
Groundcontactarea ................... 48560cm2 7,527 in2
Groundpressure(tractor) ........ 108kPa1.10kg/cm2 15.6 psi
Numberoftrackrollers ................................. 8
Numberofcarrierrollers................................ 2
Extreme
service shoes
Additional
weight
Ground
contact area
610 mm
24"
0 kg
0 lb
48560 cm2
7,527 in2
710 mm
28"
680 kg
1,500 lb
56520 cm2
8,760 in2
810 mm
32"
1360 kg
3,000 lb
64480 cm2
9,990 in2
Ground **
pressure
145 kPa
1.48 kgf/cm2
21.0 psi
126 kPa
1.28 kgf/cm2
18.2 psi
111 kPa
1.13 kgf/cm2
16.0 psi
60
Automatic
gearshift mode
Manual
gearshift mode
60
500
PCCS,joystickcontrolled,wetmultiple-discsteeringclutchesare
spring-loadedandhydraulicallyreleased.Wetmultiple-disc,
pedal/levercontrolledsteeringbrakesarespring-actuated
hydraulicallyreleasedandrequirenoadjustment.Steeringclutches
andbrakesareinterconnectedforeasy,responsivesteering.
50
F1
50
400
40
300
30
F2
**Groundpressurebasedontractor,Semi-Utiltdozer,giantripper,cab,
ROPS,operator,standardequipment,ratedcapacityoflubricant,coolant,and
fullfueltank.
40
30
20
10
COOLANT AND LUBRICANT
F2
F3
200
20
100
10
CAPACITY
F3
F3L
0
0
0
0
0
2
1
4
2
6
3
8
4
5
10
6
12
7
14 km/h
8
mph
Travel Speed
(REFILL)
Fueltank .......................... 1200ltr
Coolant ............................ 120ltr
Engine .............................. 86ltr
Torqueconverter,transmission,
bevelgear,andsteeringsystem ....... 150ltr
Finaldrive(eachside).................. 65ltr
317.0 u.s. gal
31.7 u.s. gal
22.7 u.s. gal
39.6 u.s. gal
17.1 u.s. gal
FINAL DRIVES
Double-reductionfinaldriveofspurandplanetarygearsetsto
increasetractiveeffortandreducegeartoothstressesforlong
finaldrivelife.Segmentedsprocketteetharebolt-onforeasy
replacement.
12
D375A-6
C r aW l e r d o z e r
DIMENSIONS
SEMI-U DOZER WITH GIANT RIPPER
A
B
C
D
E
F
2500 mm
4695 mm
4265 mm
2265 mm
3980 mm
10485 mm
8'2"
15'5"
14'0"
7'5"
13'1"
34'5"
G
H
I
J
3460 mm
1485 mm
1100 mm
4285 mm
11'4"
4'10"
3'7"
14'1"
C
J
D
I
G.L
A
B
E
G
H
F
GroundClearance:610mm2'0"
OPERATING WEIGHT
Tractorweight ...........................53200kg 117,290 lb
Includingratedcapacityoflubricant,coolant,fullfueltank,
operator,andstandardequipment.
Operatingweight .........................71640kg 157,940 lb
IncludingSemi-Utiltdozer,giantripper,cab,
ROPS,operator,standardequipment,ratedcapacityof
lubricant,coolant,andfullfueltank.
Groundpressure..................145kPa1.48kg/cm2 21.0 psi
HYDRAULIC SYSTEM
Hydrauliccontrolunit:
Closed-centerloadsensingsystem(CLSS)designedforpreciseand
responsivecontrol,andforefficientsimultaneousoperation.
Hydrauliccontrolunit:
Allspoolcontrolvalvesexternallymountedbesidethehydraulictank.
Variablepistonpumpwithcapacity(dischargeflow)of
366ltr/min 96.7 u.s. gal/min forimplement atratedenginerpm.
Reliefvalvesetting...forimplement27.5MPa280kg/cm2 3,980 psi
Controlvalves:
SpoolcontrolvalvesforSemi-UtiltdozerandFull-Utiltdozer.
Positions:Bladelift ...............Raise,hold,lower,andfloat
Bladetilt ......................Right,hold,andleft
Additionalcontrolvalverequiredforvariablediggingangle
multi-shankripperandgiantripper.
Positions:Ripperlift ...................Raise,hold,andlower
Rippertilt..............Increase,hold,anddecrease
Hydrauliccylinders .......................Double-acting,piston
Number of cylinders
2
1
2
2
Blade lift
Blade tilt
Ripper lift
Ripper tilt
Bore
140 mm
180 mm
200 mm
180 mm
5.5"
7.1"
7.9"
7.1"
Hydraulicoilcapacity(refill):
Semi-UdozerorUdozer ...............130ltr 34.4 u.s. gal
Ripperequipment(additionalvolume):
Giantripper(variable) ...................45ltr 11.9 u.s. gal
Multi-shankripper(variable) ..............45ltr 11.9 u.s. gal
DOZER EQUIPMENT
BladecapacitiesarebasedontheSAErecommendedpracticeJ1265.
Overall
length with
Blade
dozer
capacity
Strengthened 7780 mm
Dual tilt
25'6"
Semi-U dozer
Strengthened
8140 mm
dual tilt U dozer 26'8"
with spill guard
Weight
Dozer
Hydraulic
equipment
oil
Blade
length x height
(with spill guard height)
Maximum
lift above
ground
Maximum
drop below
ground
Maximum
tilt
adjustment
18.5 m3
24.2 yd3
4695 mm x 2265 mm
15'5" x 7'5"
1690 mm
5'7"
735 mm
2'5"
1185 mm
3'11"
11570 kg
25,510 lb
50 kg
110 lb
22.0 m3
28.8 yd3
5140 mm x 2265 mm (2525 mm)
16'10" x 7'5" (8'3")
1690 mm
5'7"
735 mm
2'5"
1300 mm
4'3"
12600 kg
27,780 lb
50 kg
110 lb
Ground
Pressure*
146 kPa
1.49 kgf/cm2
21.2 psi
148 kPa
1.51 kgf/cm2
21.4 psi
*Groundpressureshowstractorwithcab,ROPS,variablegiantripper,standardequipmentandapplicableblade.
13
STANDARD EQUIPMENT FOR BASE MACHINE
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Accessorysockets,2x12V
Airconditionerwithheateranddefroster
Alternator,90ampere/24V
Back-upalarm
Batteries,2X12V,200Ah
Blowercoolingfan
Carstereo
Deceleratorpedal
Dry-typeaircleanerwithdustevacuator
anddustindicator
Dualtiltdozer
Eight-rollertrackframes
Engineoillevelsensor
Engineprelube
Finaldrivecasewearguard
Hingedfrontmask
Hingedunderguardwithfrontpullhook
Hydraulicsforripper
Hydraulictrackadjusters
K-BogieUndercarriageSystem
KOMTRAX Plus
Lockuptorqueconverter
● Lunchboxholder
● Mirror,rearview
● Monitor,largemulti-colorTFTLCDwith
self-diagnosticfunction
● Mufflerwithraincap
● PCCSpalmleversteeringcontrol
● Perforatedsidecovers
● Radiatorreservetank
● ROPS
● Seatbelt,78mm,3"
● Seat,airsuspension,fabric,highback,
fullyadjustable
● Shoes,610mm24" extremeservice,
single-grouser
● Segmentedsprockets
● SpillguardforFull-Udozer
● Startingmotors,2x7.5kW/24V
● Steps,heavy-dutyandhandles
● Sunvisor
● TORQFLOWtransmission
● Trackrollerguards
● Trackshoeslipcontrolsystem
● Vandalismprotectionkit
● Warninghorn
● Wetsteeringclutches
roPs:*
Weight .................700kg1,540 lb
Roofdimensions:
Width .................1980mm6'6"
Heightfrom
compartmentfloor .........1872mm6'2"
*MeetsISO3471andSAEJ1040APR88,ROPS
standards
steel cab:*
Weight .................570kg1,260 lb
Dimensions:
Length ................1875mm6'2"
Width .................1740mm5'9"
Heightfromcompartment
floortoceiling ..........1630mm5'4"
*MeetsISO3449FOPSstandard
OPTIONAL EQUIPMENT
●
●
●
●
●
●
●
●
●
●
●
Counterweight
Cushionpushblock
Hitch
Fastfuelfill
HIDworklights
Highmountedheadlights
Panelcover
Pusherplate
Rearviewcamera
SpillguardforSemi-Udozer
Shoes:
—710mm28"
—810mm32"
● StrengthenedSemi-Ublade
● StrengthenedFull-Ublade
Multi-shank ripper:
Hydraulicallycontrolledparallelogramripper
withthreeshanks.Rippingangleis
steplesslyadjustable.
Weight(includinghydraulic
controlunitandoil) ...6800kg14,900 lb
Beamlength..............2910mm9'7"
Maximumliftaboveground ..1135mm3'9"
Maximumdiggingdepth.....1140mm3'9"
Variable giant ripper:
Variable,parallelogramsingle-shankripper
idealforrippinguptoughmaterial.Ripping
angleisvariable.Rippingdepthisadjustable
inthreestagesbyahydraulicallycontrolled
pinpuller.
Weight(includinghydraulic
controlunitandoil) ...6200kg13,670 lb
Beamlength..............1453mm4'9"
Maximumliftaboveground ..1100mm3'7"
Maximumdiggingdepth ...1485mm4'10"
note: ProVisionHighPrecisionGPSgradelevelsystemavailablefromModularMining
OPTIONAL MINING SPECIFICATION PACKAGE
Must order all items in this group for Mining specification Package:
●
●
●
●
●
Additionalfrontandrearworklights
Batteriesandstarterisolaterbox
Cablightuninterruptedpowersource
Canister-typebreathers
Centralizedgreasepoints,rippermountpin
● Centralizedgreasepoints,blade
cylinderyoke
● Concentratedsamplingpointsforoil
andcoolant
● Fastfuelfill
● Highmountedheadlights
● Maintenanceservicecenterforoil
andcoolant
● Manualenginestopswitches
● Provisionforplatforms
● Rearviewcamera
● Worklightfortheenginecompartment
May order individually in addition to Mining specification Package:
● HIDworklights
● Platformswithhandrailsandfootbarriersrightandleftsides
AESS800-02
©2011KomatsuAmericaCorp.
www.komatsuamerica.com
PrintedinUSA
AD04(2.5M)OSP
04/11(EV-1)
KomatsuAmericaCorp.isanauthorizedlicenseeofKomatsuLtd.
Materialsandspecificationsaresubjecttochangewithoutnotice
isaregisteredtrademarkofKomatsuLtd.,Japan
KOMTRAXPlusisatrademarkofKomatsuAmericaCorp.