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Case 590ST Manual de serviço
SECTION 35 - HYDRAULIC SYSTEM
HYDRAULIC DIAGRAMS ................................................................................................................................. 3
HYDRAULIC DIAGRAM - 2WS SIDESHIFT MECHANICAL MODELS ....................................................... 3
HYDRAULIC DIAGRAM - 2WS SIDESHIFT PILOT MODELS .................................................................... 9
HYDRAULIC DIAGRAM - 4WS SIDESHIFT MECHANICAL MODELS ..................................................... 11
HYDRAULIC DIAGRAM - 4WS SIDESHIFT PILOT MODELS .................................................................. 13
HYDRAULIC DIAGRAM - 4WS CENTER PIVOT PILOT MODELS .......................................................... 15
HYDRAULIC PUMP ........................................................................................................................................ 17
HYDRAULIC FIXED-FLOW-RATE GEAR PUMP...................................................................................... 17
HYDRAULIC VARIABLE-FLOW-RATE PISTON PUMP............................................................................ 28
CONTROL VALVES........................................................................................................................................ 43
LOADER CONTROL VALVE ..................................................................................................................... 52
BACKHOE ATTACHMENT CONTROL VALVE......................................................................................... 56
RELIEF VALVES........................................................................................................................................ 68
BACKHOE ATTACHMENT CONTROL VALVE PILOT SOLENOID VALVE .................................................. 77
ACCUMULATOR "GLIDE RIDE" PARKER..................................................................................................... 80
TECHNICAL SPECIFICATIONS................................................................................................................ 80
MAINTENANCE ......................................................................................................................................... 80
SAFETY ..................................................................................................................................................... 80
CHECKING AND ADJUSTING THE PRECHARGE PRESSURE ............................................................. 81
HYDRAULIC SWING SYSTEM ...................................................................................................................... 83
OPERATION .............................................................................................................................................. 83
HYDRAULIC CYLINDERS.............................................................................................................................. 86
LOADER ATTACHMENT BOOM CYLINDER............................................................................................ 87
LOADER BUCKET CYLINDER.................................................................................................................. 93
4X1 LOADER BUCKET CYLINDER .......................................................................................................... 97
BACKHOE BOOM CYLINDER ................................................................................................................ 100
BACKHOE ATTACHMENT DIPPER CYLINDER .................................................................................... 104
BACKHOE BUCKET CYLINDER............................................................................................................. 108
TELESCOPIC CYLINDER ....................................................................................................................... 112
STABILIZER CYLINDER - CENTER PIVOT (695ST).............................................................................. 115
STABILIZER CYLINDER - SIDESHIFT ................................................................................................... 119
SWING CYLINDER.................................................................................................................................. 123
BACKHOE ATTACHMENT LOCK CYLINDER - SIDESHIFT .................................................................. 127
SPECIAL TOOLS..................................................................................................................................... 128
HYDRAULIC CONTROL LEVERS................................................................................................................ 129
TECHNICAL SPECIFICATIONS.............................................................................................................. 129
CONTROLS AND OPERATION .............................................................................................................. 130
COMPONENTS ....................................................................................................................................... 131
DISASSEMBLY AND ASSEMBLY........................................................................................................... 133
CONTROL LEVER VALVE ...................................................................................................................... 136
TROUBLESHOOTING .................................................................................................................................. 138
PRELIMINARY CHECKS......................................................................................................................... 138
TROUBLESHOOTING (WITH "REXROTH" CONTROL VALVES).......................................................... 139
SWING ..................................................................................................................................................... 141
HYDRAULIC PUMP ................................................................................................................................. 142
INDEX