B3: To boom cylinder head
B4: To swing motor
B5: To right travel motor
B6: To arm cylinder bottom
B-1: To arm cylinder bottom
B-2: To attachment
BP1: From LS select solenoid valve
BP5: From machine push-up solenoid valve
BP6: From attachment selector solenoid valve
P1: From R.H. work equipment PPC valve (bucket
CURL)
P2: From R.H work equipment PPC valve (bucket
DUMP)
P3: From travel PPC valve (left travel REVERSE)
P4: From travel PPC valve (left travel FORWARD)
P5: From R.H work equipment PPC valve (boom
RAISE)
P6: From R.H work equipment PPC valve (boom
LOWER)
P7: From L.H work equipment PPC valve (swing
LEFT)
P8: From L.H work equipment PPC valve (swing
RIGHT)
P9: From travel PPC valve (right travel REVERSE)
P10: From travel PPC valve (right travel FORWARD)
P11: From L.H work equipment PPC valve (arm OUT)
P12: From L.H work equipment PPC valve (arm IN)
P-3: From R.H. attachment PPC valve
P-4: From R.H. attachment PPC valve
PLS1: To front pump LS valve
PLS2: To rear pump LS valve
PLSC: LS pressure pickup port
PP1: From front pump
PP2: From rear pump
PPC: Pilot source pressure pickup port
PP1S: Front pump oil pressure sensor mounting port
PP2S: Rear pump oil pressure sensor mounting port
PPS1: To front pump LS valve
PPS2: To rear pump LS valve
PR: To solenoid valve, PPC valve, and EPC valve
PST: From travel junction solenoid valve
PX1: From 2-stage relief solenoid valve
PX2: From 2-stage relief solenoid valve
T: To tank
T1: To tank
TS: To tank
TSW: From swing motor
IS1: Merge-divider EPC valve (main spool) drive sig-
nal
IS2: Merge-divider EPC valve (LS spool) drive signal
IS3: Variable back pressure solenoid valve drive signal
1: Variable back pressure valve
2: Variable back pressure solenoid valve
3: Merge-divider EPC valve (for LS spool)
4: Merge-divider EPC valve (for main spool)
5: Arm check valve
6: Boom hydraulic drift prevention valve
7: Boom Hi-valve, arm Hi-valve
8: Boom Hi check valve
9: 6-spool valve
10: Cover A
11: Service valve
12: Arm quick return valve
13: Cover B
14: Merge-divider valve
COMPONENT PARTS OF HYDRAULIC SYSTEM
10 STRUCTURE AND FUNCTION
10-136
PC500LC-10R
Summary of Contents for PC500LC-10R
Page 1: ...HYDRAULIC EXCAVATOR SEN06722 00 PC500LC 10R SERIAL NUMBERS 100001 and up...
Page 2: ......
Page 3: ...00 INDEX AND FOREWORD PC500LC 10R 00 1...
Page 76: ......
Page 77: ...01 SPECIFICATIONS PC500LC 10R 01 1...
Page 94: ......
Page 95: ...10 STRUCTURE AND FUNCTION PC500LC 10R 10 1...
Page 177: ...When balanced 10 STRUCTURE AND FUNCTION CLSS PC500LC 10R 10 83...
Page 178: ...When lever is returned to fine control state CLSS 10 STRUCTURE AND FUNCTION 10 84 PC500LC 10R...
Page 179: ...When lever is pulled at a stroke 10 STRUCTURE AND FUNCTION CLSS PC500LC 10R 10 85...
Page 180: ...When lever is in stroke end CLSS 10 STRUCTURE AND FUNCTION 10 86 PC500LC 10R...
Page 377: ...20 STANDARD VALUE TABLE PC500LC 10R 20 1...
Page 407: ...30 TESTING AND ADJUSTING PC500LC 10R 30 1...
Page 583: ...30 TESTING AND ADJUSTING METHOD FOR STARTING UP KOMTRAX TERMINAL PC500LC 10R 30 177...
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Page 605: ...60 MAINTENANCE STANDARD PC500LC 10R 60 1...
Page 636: ...MAINTENANCE STANDARD OF MAIN PUMP 60 MAINTENANCE STANDARD 60 32 PC500LC 10R...
Page 638: ...MAINTENANCE STANDARD OF SWING MOTOR 60 MAINTENANCE STANDARD 60 34 PC500LC 10R...
Page 641: ...60 MAINTENANCE STANDARD MAINTENANCE STANDARD OF TRAVEL MOTOR PC500LC 10R 60 37...
Page 644: ...MAINTENANCE STANDARD OF CONTROL VALVE 60 MAINTENANCE STANDARD 60 40 PC500LC 10R...
Page 646: ...MAINTENANCE STANDARD OF CONTROL VALVE 60 MAINTENANCE STANDARD 60 42 PC500LC 10R...
Page 648: ...MAINTENANCE STANDARD OF CONTROL VALVE 60 MAINTENANCE STANDARD 60 44 PC500LC 10R...
Page 650: ...MAINTENANCE STANDARD OF CONTROL VALVE 60 MAINTENANCE STANDARD 60 46 PC500LC 10R...
Page 652: ...MAINTENANCE STANDARD OF CONTROL VALVE 60 MAINTENANCE STANDARD 60 48 PC500LC 10R...
Page 658: ...MAINTENANCE STANDARD OF TRAVEL PPC VALVE 60 MAINTENANCE STANDARD 60 54 PC500LC 10R...
Page 668: ...MAINTENANCE STANDARD OF WORK EQUIPMENT LINKAGE 60 MAINTENANCE STANDARD 60 64 PC500LC 10R...
Page 679: ...90 CIRCUIT DIAGRAMS PC500LC 10R 90 1...
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Page 704: ...Symbol Content Buzzer Antenna SYMBOLS USED IN ELECTRICAL CIRCUIT DIAGRAM 90 26 PC500LC 10R...
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