Case CX500C, Service Manual

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INTRODUCTION
Straight travel circuit
Boom-up/arm 2 pumps internal flow
Boom and arm load holding circuit
Boom-down regenerative circuit
Bucket-close regenerative circuit
Arm-in forced regenerative circuit
Boom-up priority variable orifice (for arm operation)
Function
2 pumps flow
Weight
424 kg ( 934.760 lb )
Solenoid valve (5 stack)
Manufacturer Yuken Kogyo Co., Ltd.
Valve specifications
Maximum flow P→B 25 l/min ( 6.604 US gpm ) Other 5 l/min ( 1.321 US gpm )
Rated pressure 4.5 MPa ( 652 psi )
Port size P.T.B port G3/8
C1, C2, C3, C4 C5 ports G1/4
Solenoid specifications
Operating voltage DC 20 - 32 V
Power consumption 17 W max.
Weight 6.7 kg ( 14.7710 lb )
Remote control valve for left/right operations
Manufacturer Kawasaki Heavy Industries, Ltd.
Operating pressure 3.92 MPa ( 569 psi )
Secondary pressure 0.49 - 2.89 MPa ( 71.0745 - 419 psi ) primary short type
1,3 port 19 °
Operating angle
2,4 port 25 °
Weight 1.9 kg ( 4.1888 lb )
Remote control valve for travel operation
Manufacturer Kawasaki Heavy Industries, Ltd.
Operating pressure 3.92 MPa ( 569 psi )
Secondary pressure 0.49 - 2.89 MPa ( 71.0745 - 419 psi ) primary short type
Operating angle 12.4 °
Weight 4.1 kg ( 9.0390 lb )
Remote control valve characteristic diagram
Operation remote control valve control dia-
gram
A. Secondary pressure [MPa (psi)]
B. Push rod stroke [mm (in)]
C. Operating angle [deg.]
1
Secondary pressure
2 Independent operating torque (port 1)
3 Independent operating torque (port 3)
SMIL15CEXY883AB
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48032547 22/06/2016
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