Hitachi Ex1200-5D Excavator Technical Operational Principle Manual (TO18F-E-00)
File Details:
Hitachi Ex1200-5D Excavator Technical Operational Principle Manual (TO18F-E-00)
- Manual Language:English
- Pages: 244
- Size: 5.51 MB
- Downloadable:Yes
- Format:PDF
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Description:
Hitachi Ex1200-5D Excavator Technical Operational Principle Manual (TO18F-E-00)
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 redelivery 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 Ex1200-5D Excavator Technical Operational Principle Manual (TO18F-E-00)
COVER..................................................................................... 1 INTRODUCTION.............................................................................. 3 CONTENTS.................................................................................. 7 SECTION 1 GENERAL......................................................................... 9 Specifications........................................................................ 11 SPECIFICATIONS.................................................................... 11 WORKING RANGE (BACKHOE)........................................................... 13 WORKING RANGE (BE BACKHOE)........................................................ 14 WORKING RANGE (LOADING SHOVEL).................................................... 15 ENGINE............................................................................ 16 ENGINE ACCESSORIES................................................................ 19 HYDRAULIC DEVICES................................................................. 19 ELECTRICAL EQUIPMENT.............................................................. 22 Component Layout...................................................................... 25 MAIN COMPONENTS................................................................... 25 ELECTRICAL SYSTEM COMPONENTS (1).................................................. 26 ELECTRICAL SYSTEM COMPONENTS (2).................................................. 27 ELECTRICAL SYSTEM COMPONENTS (3).................................................. 32 ELECTRICAL SYSTEM COMPONENTS (4).................................................. 33 ON AND AROUND PUMPS............................................................... 34 OTHERS............................................................................ 35 SECTION 2 SYSTEM.......................................................................... 39 Control System........................................................................ 41 OUTLINE........................................................................... 41 ENGINE CONTROL.................................................................... 42 PUMP CONTROL...................................................................... 52 VALVE CONTROL..................................................................... 56 OIL COOLER AND FUEL COOLER FAN MOTOR CONTROL...................................... 64 AUTO-LUBRICATION CONTROL.......................................................... 66 Hydraulic System...................................................................... 69 OUTLINE........................................................................... 69 PILOT CIRCUIT..................................................................... 70 MAIN CIRCUIT...................................................................... 88 PUMP TRANSMISSION OIL COOLING CIRCUIT.............................................116 OIL COOLER FAN MOTOR CIRCUIT......................................................116 Electrical System.....................................................................117 OUTLINE...........................................................................117 POWER SOURCE CIRCUIT..............................................................118 BULB CHECK CIRCUIT................................................................119 ENGINE START CIRCUIT..............................................................120 CHARGING CIRCUIT..................................................................122 ACCESSORY CIRCUIT.................................................................124 SURGE VOLTAGE PREVENTION CIRCUIT..................................................126 SECTION 3 COMPONENT OPERATION.............................................................131 Pump Device...........................................................................133 OUTLINE...........................................................................133 MAIN PUMP, OIL COOLER FAN MOTOR DRIVE PUMP........................................134 REGULATORS........................................................................137 3-UNIT PUMP.......................................................................158 Swing Device..........................................................................159 OUTLINE...........................................................................159 SWING MOTOR.......................................................................160 VALVE UNIT........................................................................162 SWING PARKING BRAKE...............................................................164 SWING REDUCTION GEAR..............................................................165 Control Valve.........................................................................167 OUTLINE...........................................................................167 HYDRAULIC CIRCUIT.................................................................176 FLOW COMBINER VALVE...............................................................178 MAIN RELIEF VALVE.................................................................180 OVERLOAD RELIEF VALVE.............................................................181 MAKE-UP VALVE.....................................................................181 HOLDING VALVE.....................................................................182 ARM REGENERATIVE VALVE............................................................184 BOOM OVERLOAD RELIEF PRESSURE SWITCH VALVE........................................186 Pilot Valve...........................................................................189 OUTLINE...........................................................................189 OPERATION.........................................................................190 Travel Device.........................................................................197 OUTLINE...........................................................................197 TRAVEL REDUCTION GEAR.............................................................198 TRAVEL MOTOR......................................................................199 TRAVEL BRAKE VALVE................................................................201 TRAVEL MOTOR DISPLACEMENT ANGLE CHANGE............................................206 PARKING BRAKE.....................................................................208 Signal Control Valve..................................................................211 OUTLINE...........................................................................211 PILOT PORT........................................................................212 SHUTTLE VALVE.....................................................................216 SHOCKLESS VALVE...................................................................220 PUMP 1 AND 2 FLOW RATE CONTROL VALVE..............................................224 ARM FLOW RATE CONTROL VALVE, FLOW COMBINER VALVE CONTROL SPOOL, PRIORITY VALVE....226 Others (Upperstructure)...............................................................227 PILOT SHUT-OFF VALVE..............................................................227 SHOCKLESS VALVE...................................................................228 SOLENOID VALVE....................................................................232 OIL COOLER FAN MOTOR..............................................................234 ACCUMULATOR.......................................................................235 AUTO-LUBRICATION SYSTEM...........................................................236 Others (Undercarriage)................................................................237 SWING BEARING.....................................................................237 CENTER JOINT......................................................................238 TRACK ADJUSTER....................................................................239 SERVICE MANUAL REVISION REQUEST FORM......................................................243
Please Note:
⦁ This is the same manual used by the dealers to diagnose and troubleshoot your vehicle
⦁ You will be directed to the download page as soon as the purchase is completed. The whole payment and downloading process will take anywhere between 2-5 minutes
⦁ Need any other service / repair / parts manual, please feel free to contact [email protected] . We still have 50,000 manuals unlisted
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