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9KomatsuTier4FinalHM300-5ArticulatedDumpTruckPOWERFULCOST-EFFICIENTPERFORMANCEKKomatsuhasintroducedtheTier4FinalHM300-5anarticulateddumptruckwithapayloadof30.9tonsandfeaturesdesignedtoprovidedependableperformanceandhighproductivity.Theredesignedtruckbodyhasbeenoptimizedforincreasedcapacityandpayloadoverpreviousversions.Theloadingheightonthetruckis9-feet-2-inchesanoptimalheightfor30-to60-tonexcavatorsor5-to7.5-cubic-footwheelloaders.Thetwosingle-stagedbodyliftcylindersprovidea70-degreedumpanglewhenunloading.Operatorscanselectaworkingmodethatmatchestheapplicationorworkconditionsensuringthetruckwilloperateefficientlyandsmoothlyinallconditions.AdditionallytheKomatsuTractionControlSystemautomaticallyadjuststoprovideoptimumtractioninsoftgroundconditions.Whenspeedsensorsonfourwheelsdetecttireslippagetheinter-axlelockisapplied.Ifslippagecontinuesfourindependentbrakescanbeappliedtoregaintraction.The324-horsepowerHM300-5alsofeaturesKomatsusadvancedtransmissionsystemK-ATOMICSasix-speedfully-automatictransmissionthateliminatesshiftshockandtorquecut-off.Thesystemautomaticallyselectsthebestgearbasedonvehiclespeedenginerpmandshiftpositionresultinginpowerfulaccelerationsmoothdownshiftsandsynchronizedenginespeedwhenclimbingslopes.Anautomaticretarderallowstheoperatortoselecttheoperatingspeedwhengoingdownaslope.AnintegratedpayloadmetercomesstandardontheHM300.Thetruckoperatorcanseetheloadedmaterialweightonamonitorinthecabandexternaldisplaylampsprovidetheinformationtotheloaderoperatoreliminatingguesswork.Serviceaccesstothetruckhasalsobeenimproved.Theenginehoodismadeoflightweightfiberglassandiseasiertoopenandthecabtiltsrearwardtoprovideaccesstothetransmission.Anelectricpowertiltfunctionisalsostandard.Twohydraulically-drivenauto-reversingfanshelpkeeptheradiatorandchargeaircoolerclean.Regularserviceisthekeytomaximumuptime.AsaresultKomatsuincludesKomatsuCAREonallofitsTier4equipment.KomatsuCAREprovidescom-plimentaryscheduledmaintenanceforthefirstthreeyearsorfirst2000hoursofusewhichevercomesfirst.TheHM300isalsoequippedwiththeKOMTRAXvehiclemonitoringsystemwithseveralnewfeaturesincludinganautoidleshutdownfunctiontohelpownersloweroperatingcostsandequipmentwearbyreducingunnecessaryidletime.Theloadingheightonthetruckis9-feet-2-inchesanoptimalheightfor30-to60-tonexcavatorsor5-to7.5-cubic-footwheelloaders.PRODUCTNEWS