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Shop manual máy đào HuynDai R170W-9 (Phần 1) Phần thủy lực
3-5The pilot circuit consists of suction circuit, delivery circuit and return circuit.The pilot pump is provided with relief valve, receives the oil from the hydraulic tank through the suction filter.The discharged oil from the pilot pump flows to the remote control valve, EPPR valve, solenoid valve assemblies, swing parking brake, main control valve and safety lock solenoid valve through line filter.GROUP 3 PILOT CIRCUITGROUP 3 PILOT CIRCUITRelief valve40kgf/cmRemote control valve(LH lever)Remote control valve(RH lever)Safety locksolenoid valveSwing parking brakePilot pumpSuction filterControl valvePower boost solenoid valveMain pump2Line filterMax flow cut off solenoid valveDozer & outriggerleverTravel forward solenoid valveTravel reverse solenoid valveDozer & outriggerselector valveArm regeneration cut offsolenoid valve14W73CI03Adjust boom solenoid valveBreaker solenoid valveCreep travel solenoid valveArm regeneration cut solenoid valveSwing reduce EPPR valve 3-6Pi1Pi2DR#, dr#B1A1A2B2B1S2 S1P2P1P1B3A3A2A1T(dr1)Pd6Pc6T2,T3,T4PO3(MCV)PT2T4(TGP)ACC1GPBR1BR2ACC2ACC1CT4PPGPCT3CT1CT2dr3dr2ENGHYDTANKACCELERATORPEDALBRAKE VALVEARMCYLINDERBUCKETCYLINDERTRAVEL MOTORFRONT AXLEREAR AXLEOSCILLATINGCYLINDERTRANSMISSIONSWING MOTORTURNINGJOINTMAIN PUMPBOOM CYLINDERTPM2PTPTMKBAC1T3P1P1P2SWING ARMBUCKET BOOMPTPT(1)cPc3PSPd40Pa5Pb5Pc2Pd2Pc40Pa20Pb20PSd1h1(3)PS12PDOZER LEVERPc1(FW)T(4) (3) (1) (2) (4)(2)Pd1(BW)PTRCV LEVER(LH)RCV LEVER(RH)Pb4(MCV)X1(T/Motor)Pu(MCV)PSL RM1Pn1(MCV)Pn2(MCV)PSPSPuPc42Pb3Pd41Pb20Pa20Pb1Pa1T1Pc3Pa21V3Pd2D2C2Pc1D1C1Pd1AiB4B5A5Pa5Pb5Pa4Pb4C5D5D4C4Pc40Pd40DR3Pc5Pd5RsC6D6P03PSP1P2P3P0PattP02PSPn1Pi1(Pump)Pi2(Pump)Pn2PSPSPd6Pc6PSPc2P05PuoPc41DR5DR2DR4DR0SH(S/Motor)ARM 1BOOM 2SWINGTRAVELOPT-CBOOM 1ARMREGENBUCKETOPT-BDOZERARM 2SAFETYSOLENOIDVALVEP1P4P3P2PO(MCV)PG(S/M)LINE FILTERPILOTRELIEF VALVEDOZER/ OUTRIGGER CYLINDERPb21DR1P04The pilot pump receives oil from the hydraulic tank. The discharged oil from the pilot pump flows to the safety solenoid valve through the line filter. The oil is filtered by the line filter. The pilot relief valve is provided in the pilot pump for limiting the pilot circuit pressure.The oil filtered by line filter flows remote control valve through safety solenoid valve.The return oil from remote control valve is returned to the hydraulic tank. 1. SUCTION, DELIVERY AND RETURN CIRCUIT1. SUCTION, DELIVERY AND RETURN CIRCUIT17W93HC02 Pi1Pi2DR#, dr#B1A1A2B2B1S2 S1P2P1P1B3A3A2A1T(dr1)Pd6Pc6T2,T3,T4PO3(MCV)PT2T4(TGP)ACC1GPBR1BR2ACC2ACC1CT4PPGPCT3CT1CT2dr3dr2ENGHYDTANKACCELERATORPEDALBRAKE VALVEARMCYLINDERBUCKETCYLINDERTRAVEL MOTORFRONT AXLEREAR AXLEOSCILLATINGCYLINDERTRANSMISSIONSWING MOTORTURNINGJOINTMAIN PUMPBOOM CYLINDERTPM2PTPTMKBAC1T3P1P1P2SWING ARMBUCKET BOOMPTPT(1)cPc3PSPd40Pa5Pb5Pc2Pd2Pc40Pa20Pb20PSd1h1(3)PS12PDOZER LEVERPc1(FW)T(4) (3) (1) (2) (4)(2)Pd1(BW)PTRCV LEVER(LH)RCV LEVER(RH)Pb4(MCV)X1(T/Motor)Pu(MCV)PSL RM1Pn1(MCV)Pn2(MCV)PSPSPuPc42Pb3Pd41DR1Pb21Pb20Pa20Pb1Pa1T1Pc3Pa21V3Pd2D2C2Pc1D1C1Pd1AiB4B5A5Pa5Pb5Pa4Pb4C5D5D4C4Pc40Pd40DR3Pc5Pd5RsC6D6P03PSP1P2P3P0PattP02PSPn1Pi1(Pump)Pi2(Pump)Pn2PSPSPd6Pc6PSPc2P05PuoPc41DR5DR2DR4DR0SH(S/Motor)ARM 1BOOM 2SWINGTRAVELOPT-CBOOM 1ARMREGENBUCKETOPT-BDOZERARM 2P1P4P3P2PO(MCV)PG(S/M)LINE FILTERSAFETY SOLENOIDVALVELEVER UPLEVER DOWNDOZER/ OUTRIGGER CYLINDERP043-7When the lever of the safety solenoid valve is moved upward, oil flows into the remote control valve through solenoid valve and line filter.When the lever of the safety solenoid valve moved downward, oil does not flows into the remote control valve, because of blocked port.2. SAFETY SOLENOID VALVE2. SAFETY SOLENOID VALVE (SAFETY LEVER)17W93HC03 3-8When the power boost switch on the left control lever is pushed ON, the power boost solenoid valve is actuated, the discharged oil from the pilot pump flows into PuPu port of the main relief valve in main control valve ; then the setting pressure of the main relief valve is raises from 350 kgf/cm2 to 380kgf/cm2 for increasing the digging power. And even when press continuously, it is canceled after 8 seconds. When the auto power boost function is selected to enable on the cluster, the pressure of the main relief pressure is automatically increased to 380 kgf/cm2 as working condition by the MCU. It is also operated max 8 seconds.3. MAIN RELIEF PRESSURE CHANGE SYSTEM3. MAIN RELIEF PRESSURE CHANGE SYSTEMPi1Pi2DR#, dr#B1A1A2B2B1S2 S1P2P1P1B3A3A2A1T(dr1)Pd6Pc6T2,T3,T4PO3(MCV)PT2ENGHYDTANKACCELERATORPEDALARMCYLINDERBUCKETCYLINDERTRAVEL MOTORFRONT AXLEREAR AXLEOSCILLATINGCYLINDERTRANSMISSIONSWING MOTORTURNINGJOINTMAIN PUMPBOOM CYLINDERP1P2SWING ARMBUCKET BOOMPTPT(1)cPc3PSPd40Pa5Pb5Pc2Pd2Pc40Pa20Pb20PSd1h1(3)PS12PDOZER LEVERPc1(FW)T(4) (3) (1) (2) (4)(2)Pd1(BW)PTRCV LEVER(LH)RCV LEVER(RH)Pb4(MCV)X1(T/Motor)Pu(MCV)PSL RPn1(MCV)Pn2(MCV)PSPSPuPc42Pb3Pd41DR1Pb21Pb20Pa20Pb1Pa1T1Pc3Pa21V3Pd2D2C2Pc1D1C1Pd1AiB4B5A5Pa5Pb5Pa4Pb4C5D5D4C4Pc40Pd40DR3Pc5Pd5RsC6D6P03PSP1P2P3P0PattP02PSPn1Pi1(Pump)Pi2(Pump)Pn2PSPSPd6Pc6PSPc2P05PuoPc41DR5DR2DR4DR0SH(S/Motor)ARM 1BOOM 2SWINGTRAVELOPT-CBOOM 1ARMREGENBUCKETOPT-BDOZERARM 2P1P4P3P2PO(MCV)PG(S/M)LINE FILTERMAIN RELIEFVALVEPOWER BOOSTSOLENOID VALVEAuto power boostDOZER/ OUTRIGGER CYLINDERP0417W93HC04 4. SWING PARKING BRAKE RELEASE4. SWING PARKING BRAKE RELEASEPi1Pi2DR#, dr#B1A1A2B2B1S2 S1P2P1P1B3A3A2A1T(dr1)Pd6Pc6T2,T3,T4PO3(MCV)PT2T4(TGP)ACC1GPBR1BR2ACC2ACC1CT4PPGPCT3CT1CT2dr3dr2ENGHYDTANKACCELERATORPEDALBRAKE VALVEARMCYLINDERBUCKETCYLINDERTRAVEL MOTORFRONT AXLEREAR AXLEOSCILLATINGCYLINDERTRANSMISSIONTURNINGJOINTMAIN PUMPBOOM CYLINDERTPM2PTPTMKBAC1T3P1P1P2SWING ARMBUCKET BOOMPTPT(1)cPc3PSPd40Pa5Pb5Pc2Pd2Pc40Pa20Pb20PSd1h1(3)PS12PDOZER LEVERPc1(FW)T(4) (3) (1) (2) (4)(2)Pd1(BW)PTRCV LEVER(LH)RCV LEVER(RH)Pb4(MCV)X1(T/Motor)Pu(MCV)PSL RM1Pn1(MCV)Pn2(MCV)PSPSPuPc42Pb3Pd41DR1Pb21Pb20Pa20Pb1Pa1T1Pc3Pa21V3Pd2D2C2Pc1D1C1Pd1AiB4B5A5Pa5Pb5Pa4Pb4C5D5D4C4Pc40Pd40DR3Pc5Pd5RsC6D6P03PSP1P2P3P0PattP02Pn1Pi1(Pump)Pi2(Pump)Pn2PSPSPd6Pc6PSPc2P05PuoPc41DR5DR2DR4DR0ARM 1BOOM 2SWINGTRAVELOPT-CBOOM 1ARMREGENBUCKETOPT-BDOZERARM 2P1P4P3P2PO(MCV)PG(S/M)LINE FILTERSWING MOTORSHB(cw)DrA(ccw)PGPSSH(S/Motor)DOZER/ OUTRIGGER CYLINDERP043-9When one of the RCV lever is tilted, the pilot oil flows into SH port through main control valve. This pressure move spool so, discharged oil from pilot pump flows into swing motor PG port.This pressure is applied to swing motor disc, thus the brake released. When the all of the RCV lever are set in the neutral position, oil in the swing motor disc cylinder is drained, thus the brake is applied. 17W93HC05 3-10When RH multifunction switch was placed in high or low speed position, the pressure oil from pilot pump flows to travel speed solenoid valve through travel control valve, thus the transmission is changed into high (P1) or low (P2) speed condition.5. TRAVEL SPEED SELECTION SYSTEM5. TRAVEL SPEED SELECTION SYSTEMPi1Pi2DR#, dr#B1A1A2B2B1S2 S1P2P1P1B3A3A2A1T(dr1)Pd6Pc6T2,T3,T4PO3(MCV)PT2T4(TGP)ACC1GPBR1BR2ACC2ACC1CT4PPGPCT3CT1CT2dr3dr2ENGHYDTANKACCELERATORPEDALBRAKE VALVEARMCYLINDERBUCKETCYLINDERTRAVEL MOTORFRONT AXLEREAR AXLEOSCILLATINGCYLINDERTRANSMISSIONSWING MOTORTURNINGJOINTMAIN PUMPBOOM CYLINDERTPM2PTPTMKBAC1T3P1P1P2SWING ARMBUCKET BOOMPTPT(1)cPc3PSPd40Pa5Pb5Pc2Pd2Pc40Pa20Pb20PSd1h1(3)PS12PDOZER LEVERPc1(FW)T(4) (3) (1) (2) (4)(2)Pd1(BW)PTRCV LEVER(LH)RCV LEVER(RH)Pb4(MCV)X1(T/Motor)Pu(MCV)PSL RM1Pn1(MCV)Pn2(MCV)PSPSPuPc42Pb3Pd41DR1Pb21Pb20Pa20Pb1Pa1T1Pc3Pa21V3Pd2D2C2Pc1D1C1Pd1AiB4B5A5Pa5Pb5Pa4Pb4C5D5D4C4Pc40Pd40DR3Pc5Pd5RsC6D6P03PSP1P2P3P0PattP02PSPn1Pi1(Pump)Pi2(Pump)Pn2PSPSPd6Pc6PSPc2P05PuoPc41DR5DR2DR4DR0SH(S/Motor)ARM 1BOOM 2SWINGTRAVELOPT-CBOOM 1ARMREGENBUCKETOPT-BDOZERARM 2P1P4P3P2PO(MCV)PG(S/M)LINE FILTERLOW SPEEDTRAVELSPEEDVALVEHIGHSPEEDTRAVELCONTROLVALVEDOZER/ OUTRIGGER CYLINDERP0417W93HC06 3-11When the creep switch behind the accel dial is pushed ON, the creep travel solenoid valve is actuated.The discharged oil from the pilot pump flows into X1 port of travel motor through solenoid valve.Then, the machine speed is very low travelling more than 1st speed.6. 6. CREEP TRAVEL SYSTEMCREEP TRAVEL SYSTEMPi1Pi2DR#, dr#B1A1A2B2B1S2 S1P2P1P1B3A3A2A1T(dr1)Pd6Pc6T2,T3,T4PO3(MCV)PT2T4(TGP)ACC1GPBR1BR2ACC2ACC1CT4PPGPCT3CT1CT2dr3dr2ENGHYDTANKACCELERATORPEDALBRAKE VALVEARMCYLINDERBUCKETCYLINDERFRONT AXLEREAR AXLETRANSMISSIONSWING MOTORTURNINGJOINTMAIN PUMPBOOM CYLINDERTPM2PTPTMKBAC1T3P1P1P2SWING ARMBUCKET BOOMPTPT(1)cPc3PSPd40Pa5Pb5Pc2Pd2Pc40Pa20Pb20PSd1h1(3)PS12PDOZER LEVERPc1(FW)T(4) (3) (1) (2) (4)(2)Pd1(BW)PTRCV LEVER(LH)RCV LEVER(RH)Pb4(MCV)X1(T/Motor)Pu(MCV)PSL RM1Pn1(MCV)Pn2(MCV)PSPSPuPc42Pb3Pd41DR1Pb21Pb20Pa20Pb1Pa1T1Pc3Pa21V3Pd2D2C2Pc1D1C1Pd1AiB4B5A5Pa5Pb5Pa4Pb4C5D5D4C4Pc40Pd40DR3Pc5Pd5RsC6D6P03PSP1P2P3P0PattP02PSPn1Pi1(Pump)Pi2(Pump)Pn2PSPSPd6Pc6PSPc2P05PuoPc41DR5DR2DR4DR0SH(S/Motor)ARM 1BOOM 2SWINGTRAVELOPT-CBOOM 1ARMREGENBUCKETOPT-BDOZERARM 2P1P4P3P2PO(MCV)PG(S/M)LINE FILTERA(fw)B(bw)X2M3MAMBGext.X1TUGM2TTRAVEL MOTORCREEP SPEEDSOLENOID VALVEDOZER/ OUTRIGGER CYLINDERP0417W93HC07 3-12When the arm regeneration is selected to disable on the cluster, the arm regeneration solenoid valve is activated. The pilot oil from pilot pump flows into Pb4Pb4 port in main control valve through solenoid valve and the arm regeneration spool is shifted to right.Then, the oil from arm regeneration passage returns to tank and the arm regeneration function is deactivated.When the arm regeneration is selected to enable on the cluster, the arm regeneration function is activated and arm in operation speed is increased.Refer to page 2-37 for the arm regeneration function.7. ARM REGENERATION CUT SYSTEM7. ARM REGENERATION CUT SYSTEMPi1Pi2DR#, dr#B1A1A2B2B1S2 S1P2P1P1B3A3A2A1T(dr1)Pd6Pc6T2,T3,T4PO3(MCV)PT2ENGHYDTANKACCELERATORPEDALARMCYLINDERBUCKETCYLINDERTRAVEL MOTORFRONT AXLEREAR AXLEOSCILLATINGCYLINDERTRANSMISSIONSWING MOTORTURNINGJOINTMAIN PUMPBOOM CYLINDERP1P2SWING ARMBUCKET BOOMPTPT(1)cPc3PSPd40Pa5Pb5Pc2Pd2Pc40Pa20Pb20PSd1h1(3)PS12PDOZER LEVERPc1(FW)T(4) (3) (1) (2) (4)(2)Pd1(BW)PTRCV LEVER(LH)RCV LEVER(RH)Pb4(MCV)X1(T/Motor)Pu(MCV)PSL RPn1(MCV)Pn2(MCV)PSPSPuPc42Pb3Pd41DR1Pb21Pb20Pa20Pb1Pa1T1Pc3Pa21V3Pd2D2C2Pc1D1C1Pd1AiB4B5A5Pa5Pb5Pa4Pb4C5D5D4C4Pc40Pd40DR3Pc5Pd5RsC6D6P03PSP1P2P3P0PattP02PSPn1Pi1(Pump)Pi2(Pump)Pn2PSPSPd6Pc6PSPc2P05PuoPc41DR5DR2DR4DR0SH(S/Motor)ARM 1BOOM 2SWINGTRAVELOPT-CBOOM 1BUCKETOPT-BDOZERARM 2P1P4P3P2PO(MCV)PG(S/M)LINE FILTERARM REGENERATIONSOLENOID VALVEARM REGENVALVEArm regenerationDOZER/ OUTRIGGER CYLINDERP0417W93HC08 3-138. BOOM PRIORITY SYSTEM8. BOOM PRIORITY SYSTEMBoom speedPi1Pi2DR#, dr#B1A1A2B2B1S2 S1P2P1P1B3A3A2A1T(dr1)Pd6Pc6T2,T3,T4P03(MCV)PT2ENGHYDTANKACCELERATORPEDALARMCYLINDERBUCKETCYLINDERTRAVEL MOTORFRONT AXLEREAR AXLEOSCILLATINGCYLINDERTRANSMISSIONSWING MOTORTURNINGJOINTMAIN PUMPBOOM CYLINDERP1P2SWING ARMBUCKET BOOMPTPT(1)cPc3PSPd40Pa5Pb5Pc2Pd2Pc40Pa20Pb20PSd1h1(3)PS12PDOZER LEVERPc1(FW)T(4) (3) (1) (2) (4)(2)Pd1(BW)PTRCV LEVER(LH)RCV LEVER(RH)Pb4(MCV)X1(T/Motor)Pu(MCV)PSL RPn1(MCV)Pn2(MCV)PSPSPuPc42Pb3Pd41DR1Pb21Pb20Pa20Pb1Pa1T1Pc3Pa21V3Pd2D2C2Pc1D1C1Pd1AiB4B5A5Pa5Pb5Pa4Pb4C5D5D4C4Pc40Pd40DR3Pc5Pd5RsC6D6P03PSP1P2P3P0PattP02PSPn1Pi1(Pump)Pi2(Pump)Pn2PSPSPd6Pc6PSPc2P05PuoPc41DR5DR2DR4DR0SH(S/Motor)ARM 1BOOM 2SWINGTRAVELOPT-CBOOM 1ARMREGENBUCKETOPT-BDOZERARM 2P1P4P3P2PO(MCV)PG(S/M)LINE FILTERBOOM PRIORITYEPPR VALVESwingreducingspoolDOZER/ OUTRIGGER CYLINDERP0417W93HC09When carrying out the combined operation of swing and boom up, the boom up operating speed is lowered then normal operation. To increase working efficiency, swing speed reducing system is used.The pilot oil from pilot pump flow into P03 P03 port in main control valve through boom priority EPPR valve. P03P03 oil pressure moves swing reducing spool to upper position and oil flow rate to the swing motor decreased.Then, the boom up speed is increased. This is called the boom priority system.The boom up speed can be adjusted by the cluster. Refer to page 3-12 of the operator's manual. . RM1Pn1(MCV)Pn2(MCV)PSPSPuPc42Pb3Pd41DR1Pb21Pb20Pa20Pb1Pa1T1Pc3Pa21V3Pd2D2C2Pc1D1C1Pd1AiB4B5A5Pa5Pb5Pa4Pb4C5D5D4C4Pc40Pd40DR3Pc5Pd5RsC6D6P03PSP1P2P3P0PattP02Pn1Pi1(Pump)Pi2(Pump)Pn2PSPSPd6Pc6PSPc2P05PuoPc41DR5DR2DR4DR0ARM 1BOOM 2SWINGTRAVELOPT-CBOOM 1ARMREGENBUCKETOPT-BDOZERARM 2P1P4P3P2PO(MCV)PG(S/M)LINE. high (P1) or low (P2) speed condition.5. TRAVEL SPEED SELECTION SYSTEM5. TRAVEL SPEED SELECTION SYSTEMPi1Pi2DR#, dr#B1A1A2B2B1S2 S1P2P1P1B3A3A2A1T(dr1)Pd6Pc6T2,T3,T4PO3(MCV)PT2T4(TGP)ACC1GPBR1BR2ACC2ACC1CT4PPGPCT3CT1CT2dr3dr2ENGHYDTANKACCELERATORPEDALBRAKE