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Sơ đồ thủy lực máy đào CAT 345
RENR7356-0130 Page, DGM©2005 CaterpillarAll Rights ReservedPrinted in U.S.A.RENR7356-01February 2005345C ExcavatorHydraulic SystemKBA1-UPTBA1-UPMDC1-UPWDE1-UPGBH1-UPRFN1-UPDHP1-UPGJR1-UPJAR1-UPPJW1-UPBWY1-UPCPX1-UPWithout Heavy Lift and Fine SwingONE POSITIONTWO POSITIONTHREE POSITIONVENTEDPRESSURIZEDRETURN ABOVE FLUID LEVELRETURN BELOW FLUID LEVELLINES CROSSINGLINES JOININGTWO-WAYTHREE-WAYFOUR-WAYSPRINGCONTROL VALVESRESTRICTIONLINE RESTRICTION(FIXED)2-SECTION PUMPMAINAUX.SPRING(ADJUSTABLE)VARIABILITYLINE RESTRICTION(VARIABLE)LINE RESTRICTIONVARIABLE and PRESSURECOMPENSATEDPRESSURECOMPENSATIONPUMP: VARIABLE andPRESSURE COMPENSATEDENERGY TRIANGLESHYDRAULIC PNEUMATICMEASUREMENTPRESSURETEMPERATUREFLOWROTATING SHAFTSUNIDIRECTIONAL BIDIRECTIONALPUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRINGMANUAL CONTROL SYMBOLSHYDRAULIC MOTORSFIXEDDISPLACEMENTVARIABLE DISPLACEMENTNON-COMPENSATEDUNIDIRECTIONALBIDIRECTIONALHYDRAULIC PUMPSFLUID STORAGE RESERVOIRSCROSSING AND JOINING LINESVALVE ENVELOPESVALVE PORTSBASIC COMPONENT SYMBOLSFLUID CONDITIONERPUMP or MOTORFLUID POWER SYMBOLSFIXEDDISPLACEMENTVARIABLE DISPLACEMENTNON-COMPENSATEDUNIDIRECTIONALBIDIRECTIONALVALVESPILOT CONTROL SYMBOLSRELEASED PRESSUREEXTERNAL RETURNINTERNAL RETURNREMOTE SUPPLY PRESSURESIMPLIFIEDCOMPLETEINTERNALSUPPLY PRESSUREACCUMULATORSSPRING LOADEDGAS CHARGEDSOLENOIDor MANUALSOLENOIDand PILOTSOLENOID andPILOT or MANUALCOMBINATION CONTROLSSOLENOIDSERVOTHERMALDETENTHYDRAULIC AND PNEUMATIC CYLINDERSDOUBLE ACTINGSINGLE ACTINGBASICSYMBOLSPRINGLOADEDCHECK VALVESTWOPOSITIONINFINITEPOSITIONINGFLOW IN ONEDIRECTIONFLOW ALLOWED INEITHER DIRECTIONTHREEPOSITIONCROSSFLOWPARALLELFLOWINTERNAL PASSAGEWAYSNORMAL POSITIONABPTABPTSHIFTED POSITIONINFINITE POSITIONCONTROL VALVESATTACHMENTMANUAL SHUTOFFSHUTTLE PILOTCONTROLLEDHydraulic Symbols (Electrical)Electrical Symbols Table325-AG135 PK-14Circuit IdentificationNumberWire ColorWire GaugeHarness identification codeThis example indicateswire 135 in harness "AG".325-PK-14Wire GaugeWire ColorCircuit NumberIdentificationWire Number Identification CodesCurrent StandardPrevious StandardElectrical Schematic ExampleHydraulic Schematic Example325-PKWire ColorCircuit NumberIdentificationBAWireWire(EXAMPLE VALVE)Current StandardTransducer(Fluid)Transducer(Gas / Air)GGeneratorElectrical WirePressure SwitchMElectric MotorPressure Switch(Adjustable)Temperature SwitchTPressureSymbolTemperatureSymbolLevelSymbolFlowSymbolElectrical Symbols (Electrical)DescriptionPartNumberMachineLocationSchematicLocationAccumulator Gp - Pilot Manifold 164-6981 B-6 29Cooler Gp - Oil 210-8164 B-8 22Cylinder Gp - Boom Note A E-1 9Cylinder Gp - Bucket Note A E-2 8Cylinder Gp - Stick Note A E-8 7Filter Gp - Return (Inside Hydraulic Tank) 173-3434 A-5 and A-6 42Filter Gp - Drain Return 126-2075 A-4 and A-6 41 and 44Filter Gp - Pilot 158-8987 A-4 39Motor Gp - Cooling Fan 242-6904 A-6 23Motor Gp - Left Swing 225-4506 F-7 1Motor Gp - Left Travel 232-6180 F-5 3Motor Gp - Right Swing 225-4506 F-6 2Motor Gp - Right Travel 232-6180 F-4 4Pump Gp - Cooling 259-0814 B-1 32Pump Gp - Drive / Idler / Pilot 259-0818 A-3 33Sensor Gp - Drive Pump Pressure 221-8869 B-2 36Sensor Gp - Idler Pump Pressure 221-8869 A-2 38Switch As - Implement Pressure 106-1079 D-3 13Switch As - Travel Pressure 106-1079 D-3 14Swivel Gp - Joint 225-4547 E-5 10Tank Gp - Hydraulic 227-0431 A-6 43Valve Gp - Boom / Swing Priority 232-4102 B-4 31Valve Gp - Boom Drift Reduction 153-5233 D-1 15Valve Gp - Check Boom / Stick 2 239-8902 D-1 12Valve Gp - Check Boom 2 239-8906 D-6 12Valve Gp - Check Cooler Bypass 123-2505 B-8 21Valve Gp - Check Slow Return 185-0384 B-8 20Valve Gp - Check Stick 239-8904 D-5 12Valve Gp - Left Swing Motor 107-7056 E-7 1Valve Gp - Left Travel / Brake 165-9338 E-5 5Valve Gp - Lock Solenoid 121-1491 B-5 28Valve Gp - Main Control 230-2760 D-1 12Valve Gp - Pilot Control Bucket / Boom 232-4158 C-7 19Valve Gp - Pilot Control Stick / Swing 232-4157 C-8 18Valve Gp - Pilot Control Travel 165-9522 D-8 17Valve Gp - Pilot Manifold 215-5037 B-6 30Valve Gp - Power Shift Control 225-4518 B-2 33Valve Gp - Right Travel / Brake 165-9338 E-4 6Valve Gp - Stick Drift Reduction 153-5233 D-5 11Valve Gp - Swing Brake Solenoid 121-1491 B-6 26Valve Gp - Travel Speed Solenoid 121-1491 B-6 25Note A: See the Parts manual for specific cylinder part number.Component Locations7825262829301112 131464531239 41 42 4433363832439101718 192120 2223DR2 T-OUT2DR1PSA1PSA2P-INPi 1P2PACDR6DR5DR4 DR3Pi 2T-OUT1HLAPi2HRDrPATA ACBVIEW A-AVIEW B VIEW CAL4BL4 AL3 AL2 AL1 AR1BL3 BL2 BL1PTAPSWXBR2AR4AR3BR3BR1AR2R3R1aL5 aL4 bL3 aL2 bL1bR1 bR2 aR3aR4Pp2Pp1dL5dR5PLPRbL4 aL3 bL2 aL1 dST1 aR1 aR2 aR3BpiBDrPp2Pp1ApiADrdsW PiLR2TANKdR4STICK (2)BOOMBUCKETATTTRAVEL (R) STR TRAVELTRAVEL (L)SWINGSTICKBOOM (2)1115Machine Component LocationsMain Control ValvePilot Manifold Control ValveLOCK SWING TRAVEL RENR7356-0130 Page, Color 2, DGMDRAIN / RETURN LINELINES GROUP COLOR DESCRIPTIONSDRIVE PUMP OUTPUTIDLER PUMP OUTPUTPOWER SHIFT CONTROL CIRCUITPILOT PUMP OUTPUTHYDRAULIC OIL COOLING PUMP OUTPUTATTACHMENT CONTROL CIRCUITSUPPLY LINEBUCKET CONTROL & BUCKET CYLINDER CIRCUITRIGHT TRAVEL CONTROL & RIGHT TRAVEL MOTOR CIRCUITTRAVEL SPEED CONTROL CIRCUITSTICK CONTROL & STICK CYLINDER CIRCUITBOOM CONTROL & BOOM CYLINDER CIRCUITHEAVY LIFT CONTROL CIRCUITLEFT TRAVEL CONTROL & LEFT TRAVEL MOTOR CIRCUITSWING CONTROL & SWING MOTOR CIRCUITSWING BRAKE CONTROL CIRCUITTHIS SCHEMATIC IS FOR THE 345CPart #: 230-2696 HE 05Components are shown installed on a fully operablemachine with the key and engine off and transmissionshifter in neutral.LINE PATTERNSDrain / Return LinesComponent GroupPilot / Load Sensing PressurePressure LineAttachmentAir Line12345678ACDEF12345678ABCDEFBSTICK CYLINDERSWING MOTORDB1M1PA1ABPG1SWING MOTORDB2M2PA2A1B1DE1PB1PG2PB2A2B2DE2TRAVEL(L) TRAVEL(R)SWIVEL GPJOINT225-4547TRAVEL MOTOR (LEFT)XAGBRT1T2LBRT1T2LABBGBGTRAVEL MOTOR (RIGHT)AGXBUCKET CYLINDERBOOMCYLINDERBOOMCYLINDERSTICKSWINGBUCKETBOOMOUTINLR OPEN CLOSE DOWNUPP1P2 Pi1 P-IN PSA2 DR1 PSA1T-OUT2 DR2DR3 DR4 Pi2 DR5 DR6T-OUT1B1A1A2B2OUTTPGPCINPi1PS1D0A4 B1 Dr1 Di PS2 PBPi2a2a5A2a3PSVA1a1a4aL5DrHLR2XdL5 (IN,OUT)(DOWN)(OPEN)bL2(FWD)Pp1PiHdST1(FWD)(L)dSWPiL(IN)dR5APi2dR4R1YAR4R3HR(UP)aL4ADrAPi(OUT)(R) (L)(R)(F)(B)(BACK)PSW PTA(BACK)(B) (F) PAT BL2 AL2aL2(CLOSE)(UP)BDrBPiSTICK(2)BOOMBUCKETATCHTRAVEL(R)TRAVEL(L)SWINGSTICKBOOM(2)ABP1P2TPp2TPTTBACKT1 T2FWDFWDT3 T4BACKJLPJLTJRPJRTJR1JR3JR2JR4JL4JL2JL3JL1A1B1A2B2A3B3A4B4A5B5A6B6A7B7A8B88176VALVE GPPILOTMANIFOLD215-5037FILTER GPRETURN173-3434FILTER GPDRAIN RETURN126-2075MOTOR GPCOOLING FAN242-6904VALVE GPCHECKSLOW RETURN185-0384VALVE GPCHECK COOLERBYPASS123-2505VALVE GPPILOT CONTROLSTICK/SWING232-4157MOTOR GPLEFT SWING225-4506VALVE GPBOOM/SWINGPRIORITY232-4102FILTER GPPILOT158-8987ACCUMULATOR GPPILOT MANIFOLD164-6981-µ-µ -µ-µ-µ-µ -µ-µNO.1(TRAVEL)NO.2(SWING)NO.3(LOCK)bR1 aR1 aL1 bL1aR3 bR3bR2 aR2aL3bL3 bL4aR4BR3 AR3AR2 BR2BR1 AR1 AL1 BL1BR3 AR3aR3BR2AR2BR1AR1bR2bR1bL1BL1AL1bL3bR3aR2 aR1PLPRaL1aL3 bL4PRPLaR4-µ-µ -µ-µDRDR1L2L3ABSLL1BXMUACV2MU1ACVMU2MU1AMU2CVPUMP GPCOOLING259-0814PUMP GPDRIVE/IDLER& PILOT259-0818DRIVEIDLERPILOTVALVE GPPOWER SHIFTCONTROL225-4518FILTER GPDRAIN RETURN126-2075VALVE GPPILOT CONTROLBUCKET/BOOM232-4158VALVE GPPILOT CONTROLTRAVEL165-9522MOTOR GPRIGHT SWING225-4506VALVE GPLEFT SWINGMOTOR116-3420MOTOR GPLEFT TRAVEL232-6180VALVE GPLEFTTRAVEL/BRAKE165-9338MOTOR GPRIGHT TRAVEL232-6180VALVE GPRIGHTTRAVEL/BRAKE165-9338VALVE GPMAIN CNTRL230-2760VALVE GPCHECKBOOM/STICK(2)239-8902VALVE GPCHECKSTICK239-8904VALVE GPCHECKBOOM(2)239-8906SWITCH AS.TRAVEL PRESS106-0179SWITCH AS.IMPLEMENTPRESSURE106-0179SENSOR GPPUMP DRIVEPRESSURE221-8869SENSOR GPPUMP DRIVENPRESSURE221-8869VALVE GPLOCK SOL121-1491VALVE GPSWINGBRAKE SOL121-1491VALVE GPTRAVELSPEED SOL121-1491FILTER GPRETURN173-3434TANK GPHYDRAULIC227-0431VALVE GPBOOM DRIFTREDUCTON153-5233VALVE GPSTICK DRIFTREDUCTON153-5233 . Symbols Table325-AG135 PK-14Circuit IdentificationNumberWire ColorWire GaugeHarness identification codeThis example indicateswire 135 in harness "AG".325-PK-14Wire. RENR7356-0130 Page, DGM©2005 CaterpillarAll Rights ReservedPrinted in U.S.A.RENR7356-01February 2005345C ExcavatorHydraulic SystemKBA1-UPTBA1-UPMDC1-UPWDE1-UPGBH1-UPRFN1-UPDHP1-UPGJR1-UPJAR1-UPPJW1-UPBWY1-UPCPX1-UPWithout