HYDRAULIC EXCAVATOR PC490HRD -11E0 Shop Manual

00 INDEX AND FOREWORD
INDEX
ABBREVIATION LIST
01 SPECIFICATIONS
CONTENTS
SPECIFICATIONS – PC490HRD-11E0 UQBC
10 STRUCTURE AND FUNCTION
CONTENTS
ABBREVIATION LIST
CONTROL SYSTEM
HYDRAULIC SYSTEM – PC490HRD-11E0 UQBC
LS OVERRIDE VALVE
HYDRAULIC LOCK VALVE
SWING LOCK VALVE
BOOM RAISE LOCK VALVE
DEPRESSURISATION VALVE
MECHANICAL PIN LOCK/UNLOCK VALVE
PRESSURE INTENSIFIER SYSTEM
20 STANDARD VALUE TABLE
CONTENTS
STANDARD VALUE TABLE FOR MACHINE – PC490HRD-11E0 UQBC
30 TESTING AND ADJUSTING
CONTENTS
ABBREVIATION LIST
HYDRAULIC SYSTEM – PC490HRD-11E0 ULTRA QUICK BOOM CHANGE SYSTEM
ELECTRICAL SYSTEM – PC490HRD-11E0 UQBC BOOM CHANGE SYSTEM
40 TROUBLESHOOTING
CONTENTS
ABBREVIATION LIST
FAILURE CODE TABLE
TROUBLESHOOTING FOR ULTRA QUICK BOOM CHANGE SYSTEM
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE)
60 MAINTENANCE STANDARD
CONTENTS
ABBREVIATION LIST
S AND A VALVES MAINTENANCE SCHEDULE
GREASING PROCEDURE OF S VALVE ASSEMBLY LOCKING PINS (RECOMMENDED EVERY 1000 HOURS/1 YEAR WHICH EVER OCCURS FIRST OR IF DIFFICULTY CONNECTING/DISCONNECTING OCCURS
JACKING BOLTS FOR VALVE LOCKING CYLINDER ASSEMBLY REMOVAL
MAINTENANCE STANDARD OF SWING CIRCLE
MAINTENANCE STANDARD OF COUNTERWEIGHT BOLTS
MAINTENANCE STANDARD OF WORKSTAND
80 APPENDIX
AUXILLARY CONNECTIONS
WORKSTAND BRACKET
90 CIRCUIT DIAGRAMS
CONTENTS
ABBREVIATION LIST
HYDRAULIC CIRCUIT DIAGRAM
ELECTRICAL CIRCUIT DIAGRAM
INDEX