Hitachi ZW 180 Wheel Loader Operational Principle Technical Manual (TO4GD-E-00)
File Details:
Hitachi ZW 180 Wheel Loader Operational Principle Technical Manual (TO4GD-E-00)
- Manual Language:English
- Pages: 374
- Size: 15.2 MB
- Downloadable:Yes
- Format:PDF
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Description:
Hitachi ZW 180 Wheel Loader Operational Principle Technical Manual (TO4GD-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
• The Engine Manual
• 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 ZW 180 Wheel Loader Operational Principle Technical Manual (TO4GD-E-00)
ZW180_TO4GD-E-00.............................................................................. 1 INTRODUCTION.................................................................................. 3 SECTION AND GROUP CONTENTS.................................................................... 5 SECTION 1 GENERAL............................................................................. 7 Group 1 Specifications.................................................................... 9 Specifications........................................................................ 9 Group 2 Component Layout.................................................................. 11 Main Component (Overview)............................................................. 11 Main Component (Upperstructure)....................................................... 12 Main Component Layout (Travel System)................................................. 13 Electrical System (Overview).......................................................... 14 Electrical System (In Cab)............................................................ 15 Engine and Fan Pump................................................................... 20 Pump Device........................................................................... 21 Drive Unit............................................................................ 21 Control Valve......................................................................... 22 Ride Control Valve(Optional).......................................................... 23 Charging Block........................................................................ 23 Fan Motor............................................................................. 23 Steering Valve........................................................................ 24 Emergency Steering Pump (Optional).................................................... 24 Group 3 Component Specifications.......................................................... 25 Engine................................................................................ 25 Engine Accessories.................................................................... 29 Hydraulic Component................................................................... 31 Electrical Component.................................................................. 36 SECTION 2 SYSTEM.............................................................................. 41 Group 1 Control System.................................................................... 43 General............................................................................... 43 Engine Control........................................................................ 48 Pump Control.......................................................................... 57 Transmission Control.................................................................. 62 Other Controls........................................................................ 83 Control by Electric and Hydraulic Combined Circuit.................................... 93 Group 2 ECM System........................................................................107 Outline...............................................................................107 Fuel Injection Control................................................................108 Engine Start Control..................................................................110 Other Controls........................................................................111 Group 3 Hydraulic System..................................................................117 Outline...............................................................................117 Main Circuit..........................................................................118 Pilot Circuit.........................................................................129 Steering Circuit......................................................................142 Hydraulic Drive Fan Circuit...........................................................148 Group 4 Electrical System.................................................................151 Outline...............................................................................151 Main Circuit..........................................................................152 Electric Power Circuit................................................................153 Indicator Light Check Circuit.........................................................154 Accessory Circuit.....................................................................155 Preheat Circuit.......................................................................156 Starting Circuit......................................................................158 Charging Circuit......................................................................162 Serge Voltage Prevention Circuit......................................................166 Engine Stop Circuit...................................................................168 Lamplight Circuit.....................................................................169 Head Light Circuit....................................................................170 Turn Signal Circuit...................................................................174 Brake Light Circuit...................................................................175 Hazard Light Circuit..................................................................176 Horn Circuit..........................................................................177 Reverse Light/Buzzer Circuit..........................................................178 Parking Brake Circuit.................................................................180 Emergency Steering Check Circuit (Optional)...........................................182 SECTION 3 COMPONENT OPERATION.................................................................187 Group 1 Pump Device.......................................................................189 Outline...............................................................................189 Main Pump.............................................................................190 Regulator.............................................................................192 Priority Valve........................................................................206 Pilot Pump............................................................................207 Pump Delivery Pressure Sensor.........................................................207 Steering Main Relief Valve............................................................208 Group 2 Control Valve.....................................................................209 Outline...............................................................................209 Hydraulic Circuit.....................................................................216 Main Relief Valve.....................................................................220 Overload Relief Valve.................................................................222 Restriction Valve.....................................................................227 Negative Control Valve................................................................228 Flow Rate Control Valve...............................................................230 Group 3 Hydraulic Fan Motor...............................................................233 Outline...............................................................................233 Operation.............................................................................236 Flow Rate Control Valve...............................................................238 Reverse Rotation Control Valve........................................................240 Fun Pump..............................................................................242 Group 4 Steering Pilot Valve..............................................................243 Outline...............................................................................243 Construction..........................................................................244 Operation.............................................................................245 Group 5 Steering Valve....................................................................249 Outline...............................................................................249 Operation.............................................................................252 Steering Overload Relief Valve........................................................256 Group 6 Pilot Valve.......................................................................259 Outline (Standard Lever Type Pilot Valve for Front Attachment)........................259 Operation.............................................................................260 Electromagnetic Detent................................................................264 Outline (Joystick Type Pilot Valve for Front Attachment)..............................265 Operation.............................................................................266 Electromagnetic Detent................................................................270 Outline (Two-Derectional Lever Type Pilot Valve for Additional Circuit) (Optional)....271 Operation.............................................................................272 Outline (Joystick Type Pilot Valve for Additional Circuit) (Optional).................275 Operation.............................................................................276 Group 7 Charging Block....................................................................283 Outline...............................................................................283 Priority Valve........................................................................288 Pilot Relief Valve....................................................................289 Pump Torque Control Proportional Solenoid Valve.......................................290 Service Brake Accumulator / Pilot Accumulator.........................................291 Parking Brake Solenoid Valve..........................................................292 Service Brake Pressure Sensor.........................................................294 Parking Brake Pressure Sensor.........................................................294 Group 8 Ride Control Valve................................................................295 Outline...............................................................................295 Operation.............................................................................298 Charge-Cut Spool......................................................................300 Overload Relief Valve.................................................................302 Ride Control Accumlator...............................................................304 Drain Plug............................................................................305 Group 9 Drive Unit........................................................................307 Outline...............................................................................307 Torque Converter......................................................................308 Transmission..........................................................................310 Transmisson Regulator Valve...........................................................332 Transmission Control Valve............................................................334 Manual Spool (Emergency Travel Spool).................................................342 Proportional Solenoid Valve...........................................................344 Parking Brake.........................................................................346 Group 10 Axle.............................................................................349 Outline...............................................................................349 Differential..........................................................................350 Torque Proportioning Differential (TPD)...............................................354 Limited Slip Differential (LSD) (Optional)............................................356 Service Brake.........................................................................358 Final Drive / Axle Shaft..............................................................360 Group 11 Brake Valve......................................................................361 Outline...............................................................................361 Operation.............................................................................364 Group 12 Others...........................................................................367 Pilot Shut-Off Valve..................................................................367 Propeller Shaft.......................................................................368 Emergency Steering Check Block........................................................369 Emergency Steering Pump (Optional)....................................................370 SERVICE MANUAL REVISION REQUEST FORM..........................................................373
Please Note:
⦁ This is the SAME exact manual used by your dealers to fix your vehicle.
⦁ The same can be yours in the next 2-3 mins as you will be directed to the download page immediately after paying for the manual.
⦁ Any queries / doubts regarding your purchase, please feel free to contact [email protected]
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