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WA470-6R | SN: DZAS0003-UP | Komatsu | Heavy Equipment Manual PDF

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Noticeofrevision

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90-47(07) 1(07) 2(07) 3(07) 4(07) 5(07) 6(07) 7(07) 8(07) 9(07) qColophon(09)

00Indexandforeword

Tableofcontents1

00Indexandforeword

Tableofcontents..................................................................................................................................00-2

Forewordandgeneralinformation.....................................................................................................00-15

Safetynotice...................................................................................................................................00-15

Howtoreadtheshopmanual.........................................................................................................00-20

Explanationoftermsformaintenancestandard.............................................................................00-22

Handlingofelectricequipmentandhydrauliccomponent..............................................................00-24

Handlingofconnectorsnewlyusedforengines.............................................................................00-33

Howtoreadelectricwirecode........................................................................................................00-36

Precautionswhencarryingoutoperation........................................................................................00-39

Methodofdisassemblingandconnectingpush-pulltypecoupler...................................................00-42

Standardtighteningtorquetable.....................................................................................................00-45

Conversiontable.............................................................................................................................00-49

01Specification

Specificationandtechnicaldata....................................................................................................01-3

Specificationdimensiondrawing.................................................................................................01-3

Specifications..............................................................................................................................01-4

Weighttable................................................................................................................................01-8

Tableoffuel,coolantandlubricants...........................................................................................01-10

10Structure,functionandmaintenancestandard

Engineandcoolingsystem............................................................................................................10-4

Enginemountandtransmissionmount.......................................................................................10-4

Coolingsystem...........................................................................................................................10-5

Coolingfanpump........................................................................................................................10-6

Coolingfanmotor........................................................................................................................10-14

Powertrain.....................................................................................................................................10-21

Powertrain..................................................................................................................................10-21

Powertrainsystemdiagram.......................................................................................................10-22

Driveshaft...................................................................................................................................10-24

Powertrainpipingdiagram.........................................................................................................10-25

Torqueconverter.........................................................................................................................10-26

Transmission...............................................................................................................................10-34

Transmissioncontrolvalve.........................................................................................................10-52

ECMV..........................................................................................................................................10-56

Mainreliefvalveandtorqueconverterreliefvalve......................................................................10-68

Axle.............................................................................................................................................10-70

Differential...................................................................................................................................10-74

Limitedslipdifferential................................................................................................................10-79

Finaldrive...................................................................................................................................10-86

Steeringsystem.............................................................................................................................10-92

Steeringcomponentlayoutdrawing............................................................................................10-92

Steeringcolumn..........................................................................................................................10-93

Steeringpump.............................................................................................................................10-94

Steeringvalve.............................................................................................................................10-107

Orbit-rollvalve.............................................................................................................................10-124

Stopvalve...................................................................................................................................10-132

Steeringreliefvalve....................................................................................................................10-133

Steeringcylinder.........................................................................................................................10-134

Emergencysteeringmotor..........................................................................................................10-136

Emergencysteeringpump..........................................................................................................10-137

00-2WA470-6R,WA480-6R

Joysticksteeringleverlinkage....................................................................................................10-138

Electricalsteeringlever...............................................................................................................10-139

JoystickEPCvalve.....................................................................................................................10-140

Brakesystem.................................................................................................................................10-142

Brakecomponentlayoutdrawing...............................................................................................10-142

Componentlayoutofbrakecoolingsystem.............................................................................10-142-1

Brakecoolingcontrolsystem...................................................................................................10-142-2

Chargevalve...............................................................................................................................10-143

Brakevalve.................................................................................................................................10-150

Accumulator(forbrake)..............................................................................................................10-155

Slackadjuster.............................................................................................................................10-156

Brake..........................................................................................................................................10-158

Parkingbrakecontrol..................................................................................................................10-163

Parkingbrake..............................................................................................................................10-164

Parkingbrakesolenoidvalve......................................................................................................10-166

Emergencyparkingbrakereleasevalve.....................................................................................10-168

Brakecoolingoilcooler...............................................................................................................10-169

Brakecoolingpumpmotor......................................................................................................10-169-1

Brakecoolingfan....................................................................................................................10-169-2

Undercarriageandframe...............................................................................................................10-170

Axlemountandcenterhingepin................................................................................................10-170

Tires............................................................................................................................................10-174

Hydraulicsystem...........................................................................................................................10-176

Hydrauliccomponentlayoutdrawing..........................................................................................10-176

Workequipmentcontrolleverlinkage.........................................................................................10-179

Hydraulictank.............................................................................................................................10-182

Powertrainpump........................................................................................................................10-184

Workequipmentpump................................................................................................................10-186

Workequipmentcontrolvalve....................................................................................................10-206

CLSS..........................................................................................................................................10-217

Eachfunctionandoperationofeachvalve.................................................................................10-222

PPCvalve...................................................................................................................................10-236

Accumulator(forPPCcircuit).....................................................................................................10-244

Accumulator(forpowertraincircuit)...........................................................................................10-245

Accumulator(forECSS).............................................................................................................10-246

WorkequipmentPPCcut-offsolenoidvalve..............................................................................10-247

Workequipment.............................................................................................................................10-250

Workequipmentlinkage.............................................................................................................10-250

Bucket.........................................................................................................................................10-253

Bucketpositionerandboomkick-out..........................................................................................10-254

Workequipmentcylinder............................................................................................................10-260

Cabanditsattachments................................................................................................................10-261 Cab.............................................................................................................................................10-261

Airconditioner.............................................................................................................................10-262

Electricalsystem............................................................................................................................10-280 Machinemonitorsystem.............................................................................................................10-280 Machinemonitor.........................................................................................................................10-284

Electricalsystem(Transmissioncontrollersystem)....................................................................10-316

Transmissioncontroller...............................................................................................................10-356

Electricalsystem(Workequipmentcontrollersystem)...............................................................10-358

Workequipmentcontroller..........................................................................................................10-364

Electrictransmissioncontrol.......................................................................................................10-366

Kickdownswitchandholdswitch................................................................................................10-370

Loadmetercancelswitchandloadmetersubtotalswitch..........................................................10-370

WA470-6R,WA480-6R00-3 (07)

Multi-functionknob......................................................................................................................10-371

Joysticksteeringknob.................................................................................................................10-372

KOMTRAXsystem......................................................................................................................10-374

Enginestartingcircuit..................................................................................................................10-376

Enginestoppingcircuit................................................................................................................10-378

Preheatingcircuit........................................................................................................................10-379

Enginepowermodeselectorcircuit............................................................................................10-380

Engineoutputderatingfunction..................................................................................................10-381

Automaticwarm-upfunction.......................................................................................................10-381

Parkingbrakecircuit...................................................................................................................10-382

Sensor.........................................................................................................................................10-384

20Standardvaluetable

Standardservicevaluetable..........................................................................................................20-3

Standardvaluetableforengine..................................................................................................20-3

Standardvaluetableforchassis.................................................................................................20-4

30Testingandadjusting

Relatedinformationontestingandadjusting.................................................................................30-4

Toolsfortesting,adjusting,andtroubleshooting........................................................................30-4

Testingenginespeed..................................................................................................................30-9

Engineandcoolingsystem............................................................................................................30-9

Testingexhaustgascolor...........................................................................................................30-11

Testingexhausttemperature......................................................................................................30-13

Adjustingvalveclearance...........................................................................................................30-15

Testingcompressionpressure....................................................................................................30-17

Testingblow-bypressure............................................................................................................30-18

Testingengineoilpressure.........................................................................................................30-19

Testingintakeair(boost)pressure.............................................................................................30-20

Handlingfuelsystemequipment.................................................................................................30-21

Releasingresidualpressureinfuelsystem................................................................................30-21

Testingfuelpressure..................................................................................................................30-22

Testingfuelreturnandleakamount...........................................................................................30-23

Bleedingairfromfuelcircuit........................................................................................................30-26

Testingfuelcircuitforleakage....................................................................................................30-28

Handlingofreducedcylindermodeoperation............................................................................30-29

Handlingofnoinjectioncrankingoperation................................................................................30-29

Handlingofcontrollervoltagecircuit...........................................................................................30-30

Checkofmufflerandmufflerstackforloosenessanddamage..................................................30-31

Checkofmufflerfunction............................................................................................................30-31

Checkofinstalledconditionofcylinderheadandmanifolds......................................................30-32

Checkofenginepipingfordamageandlooseness....................................................................30-32

Testingandadjustingairconditionercompressorbelttension...................................................30-33

Testingandadjustingalternatorbelttension..............................................................................30-34

Powertrain.....................................................................................................................................30-35

Adjustingtransmissionspeedsensor.........................................................................................30-35

Adjustingdirectionalleverlength................................................................................................30-36

Adjustinggearshiftleverlength..................................................................................................30-36

TestingFNRleverandgearshiftlever.......................................................................................30-37

Testingandadjustingpowertrainoilpressure...........................................................................30-38

Procedureforflushingtorqueconverterandtransmissionhydrauliccircuit................................30-52

Methodofmovingmachinewhentransmissionvalveisbroken.................................................30-54

Checkofaxlefinaldriveforoilleakage......................................................................................30-57

Checkofdriveshaftsforlooseness,playanddamage..............................................................30-57

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