Case CX490D - Page 55

INTRODUCTION
Control-related
Controlvalve
ManufacturerKYBCorporation
Maximumow364L/min(96.159USgpm)(at2000RPM)
Overloadsetpressure24.5MPa(3553.725psi),boomdown
36.3MPa(5265.315psi)boomup,arm,bucket
Mainreliefsetpressure31.4MPa(4555psi)
(Uponpressure
boost)
34.3MPa(4975psi)
Footreliefsetpressure3.38MPa(490psi)
Function
Straighttravelcircuit
Boom-upandarm-out/in2pumpsinternalow
Boom-downregenerativecircuit
Boom-downandarm-inloadholdingcircuit
Swingpriorityvariableorice(duringarmoperation)
Boom-uppriorityvariableorice(duringarmoperation)
Pressureboostcircuit
2pumpsinternalow
Bucket-close2pumpsinternalow
Weight
422kg(930.351lb)
Solenoidvalve(5stack)
ManufacturerYukenKogyoCo.,Ltd.
Valvespecications
MaximumowSP:30L/min(7.925USgpm),Others:5L/min(1.321USgpm)
Ratedpressure
4.5MPa(652psi)
G3/8
PortP0,P1,D1,D2
Portsize
G1/4PortC1,C3,C12
Solenoidspecications
Operatingvoltage20-32VDC
Powerconsumption17Worless
Weight
7kg(15.432lb)
RemotecontrolvalveforLeft/Rightoperations
Manufacturer
KawasakiHeavyIndustries,Ltd.
Operatingpressure3.92MPa(569psi)
Secondarypressure0.49-2.89MPa(71.074-419.195psi),primarypressureshort
type
port1,3
19°
Operatingangle
port2,4
25°
Weight
1.9kg(4.1888lb)
Remotecontrolvalvefortraveloperation
Manufacturer
KawasakiHeavyIndustries,Ltd.
Operatingpressure3.92MPa(569psi)
Secondarypressure0.49-2.89MPa(71.074-419.195psi),primarypressureshorttype
Operatingangle12.4°
Weight
4.1kg(9.039lb)
4793781129/02/2016
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