Hitachi Ex1900-5 Excavator Technical Operational Principle Manual (T18C-01-01-003)
File Details:
Hitachi Ex1900-5 Excavator Technical Operational Principle Manual (T18C-01-01-003)
- Manual Language:English
- Pages: 206
- Size: 3.75 MB
- Downloadable:Yes
- Format:PDF
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Description:
Hitachi Ex1900-5 Excavator Technical Operational Principle Manual (T18C-01-01-003)
TO THE READER
• This manual is written for an experienced technician to provide technical information needed to maintain and repair this machine.
• Be sure to thoroughly read this manual for correct product information and service procedures.
• If you have any questions or comments, at if you found any errors regarding the contents of this manual, please contact using “Service Manual Revision Request Form at the end of this manual.
ADDITIONAL REFERENCES
• Please refer to the materials listed below in addition to this manual.
• The Operator’s Manual
• The Parts Catalog
• Operation Manual of the Engine
• Parts Catalog of the Engine
• Hitachi Training Material
MANUAL COMPOSITION
• This manual consists of three portions: the Technical Manual (Operational Principle), the Technical Manual (Troubleshooting) and the Workshop Manual.
• Information included in the Technical Manual (Operational Principle): technical information needed for redeliver and delivery, operation and activation of all devices and systems.
• Information included in the Technical Manual (Troubleshooting): technical information needed for operational performance tests, and troubleshooting procedures.
• Information included in the Workshop Manual: technical information needed for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal/installation and assemble/ disassemble procedures.
Table of Contents:
Hitachi Ex1900-5 Excavator Technical Operational Principle Manual (T18C-01-01-003)
INTRODUCTION............................................................................ 1 ALL CONTENTS............................................................................ 3 SECTION 1 GENERAL....................................................................... 5 Specifications...................................................................... 7 SPECIFICATIONS.................................................................. 7 WORKING RANGE (BE Backhoe)...................................................... 8 WORKING RANGE (Loading Shovel).................................................. 9 ENGINE.......................................................................... 10 ENGINE ACCESSORIES.............................................................. 12 HYDRAULIC COMPONENT............................................................. 13 ELECTRICAL EQUIPMENT............................................................ 16 FILTER.......................................................................... 18 OTHERS.......................................................................... 18 Component Layout.................................................................... 19 MAIN COMPONENTS (Overall Layout)................................................ 19 ELECTRICAL COMPONENTS (Overall Layout).......................................... 20 ELECTRICAL COMPONENTS (Engine and Components)................................... 21 ELECTRICAL COMPONENTS (Engine).................................................. 22 ELECTRICAL COMPONENTS (Electrical Equipment Box)................................ 24 RELAY LAYOUT.................................................................... 25 ELECTRICAL COMPONENT LAYOUT IN THE CAB.......................................... 26 ELECTRICAL COMPONENTS (Battery Compartment)..................................... 28 ELECTRICAL COMPONENTS (ECM Equipment Box)....................................... 30 PUMP AND COMPONENTS............................................................. 31 CONTROL VALVE................................................................... 32 PILOT PANEL (Control Valve Behind Side)......................................... 34 PILOT PANEL (Rear Side)......................................................... 36 UNDERCARRIAGE................................................................... 37 SWING DEVICE.................................................................... 38 TRAVEL DEVICE................................................................... 39 AUTO-LUBRICATION SYSTEM......................................................... 40 SECTION 2 SYSTEM........................................................................ 43 Control System...................................................................... 45 OUTLINE......................................................................... 45 ENGINE CONTROL.................................................................. 47 PUMP CONTROL.................................................................... 60 OIL COOLER FAN MOTOR SPEED CONTROL.............................................. 66 WIPER CONTROL................................................................... 68 ELECTRICAL / HYDRAULIC COMBINED CIRCUIT CONTROL................................. 70 AUTO LUBRICAITION CONTROL....................................................... 74 Hydraulic System.................................................................... 79 OUTLINE......................................................................... 79 PILOT CIRCUIT................................................................... 80 MAIN CIRCUIT.................................................................... 88 OIL COOLER FAN MOTOR CIRCUIT.................................................... 99 AIR CONDITIONER COMPRESSOR MOTOR CIRCUIT....................................... 99 PUMP TRANSMISSION OIL COOLER CIRCUIT............................................ 99 TRAVEL SHOCK DAMPER AND TRAVEL STOP CIRCUIT....................................100 Electrical System...................................................................103 OUTLINE.........................................................................103 POWER SOURCE CIRCUIT (KEY SWITCH:OFF)...........................................104 ACCESSORY CIRCUIT (KEY SWITCH: in ACC position)................................116 ENGINE START CIRCUIT............................................................118 CHARGING CIRCUIT (WITH KEY SWITCH ON)..........................................122 SURGE VOLTAGE PREVENTION CIRCUIT................................................124 ENGINE STOP CIRCUIT.............................................................126 ENGINE STOP CIRCUIT BY EMERGENCY ENGINE STOP SWITCH AND ENGINE STOP SWITCH....128 SECTION 3 COMPONENT OPERATION...........................................................133 Pump Device.........................................................................135 OUTLINE.........................................................................135 MAIN PUMP.......................................................................136 REGULATOR.......................................................................138 4-UNIT PUMP.....................................................................164 Swing Device........................................................................165 OUTLINE.........................................................................165 SWING MOTOR.....................................................................166 SWING PARKING BRAKE.............................................................168 SWING REDUCTION GEAR............................................................169 VALVE UNIT......................................................................170 Control Valve.......................................................................173 OUTLINE.........................................................................173 PILOT PORT LOCATION.............................................................174 HYDRAULIC CIRCUIT...............................................................175 MAIN RELIEF VALVE AND OVERLOAD RELIEF VALVE....................................177 MAKEUP VALVE....................................................................178 Pilot Valve.........................................................................179 OUTLINE.........................................................................179 CONSTRUCTION....................................................................180 FUNCTION........................................................................181 OPERATION.......................................................................182 Travel Device.......................................................................185 OUTLINE.........................................................................185 TRAVEL MOTOR....................................................................186 TRAVEL MODE CONTROL.............................................................188 BRAKE VALVE.....................................................................190 PARKING BRAKE...................................................................191 TRAVEL REDUCTION GEAR...........................................................192 Others (Upperstructure).............................................................193 PILOT SHUT-OFF VALVE............................................................193 AIR CONDITIONER.................................................................194 AUTO-LUBRICATION SYSTEM.........................................................196 OIL COOLER FAN MOTOR............................................................197 ACCUMULATOR.....................................................................198 Others (Undercarriage)..............................................................199 SWING BEARING...................................................................199 ADJUSTER CYLINDER...............................................................200 ACCUMULATOR.....................................................................201 CENTER JOINT....................................................................202 REVISION REQUEST FORM...................................................................205
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