Part of the Hitachi Repair Manuals.
An hour from now you could have this Hitachi ZX170W-3, ZX190W-3 shop manual PDF (OEM WCGB-E-00, 605 pages) open at the bench, tracing a pump device teardown on your wheeled hydraulic excavator. Disassembly and assembly procedures carry the book: control valve on both the 4-spool and 5-spool sides, swing device and swing motor, travel motor, transmission, front and rear axles, and the boom, arm, and bucket cylinders, each sequence closing on maintenance standards. Front attachment work gets its own section, from hydraulic pressure release procedures through hose rupture valve service to standard pin dimensions for arm and bucket connections. Rig the ZX170W-3 counterweight at its listed 3600 kg, and pull a weeping 22 mm union nut to 69 N·m instead of snugging it by feel. A parked excavator burns payroll by the hour. Print what you need; these pages can take grease, while the bookmarked, text-indexed file stays clean on your laptop.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 3-4 | Additional References, Manual Composition, Page Number, Safety Alert Symbol and Headline Notations, Units Used |
| Safety | 5-34 | Recognize Safety Information, Understand Signal Words, Follow Safety Instructions, Prepare for Emergencies, Wear Protective Clothing, Protect Against Noise, Inspect Machine |
| General Information | 35-64 | Precautions for Disassembling and Assembling, Maintenance Standard Terminology, Tightening Torque Specifications, Torque Chart, Piping Joint, Periodic Replacement of Parts, Painting, Bleeding Air From Hydraulic Oil Tank |
| Upperstructure, Cab and Counterweight | 65-96 | Removal and Installation of Cab, Dimensions of Cab Glass, Removal and Installation of Counterweight |
| Upperstructure, Main Frame and Pump Device | 97-146 | Removal and Installation of Main Frame, Removal and Installation of Pump Device, Disassembly and Assembly of Pump Device, Disassembly and Assembly of Regulator, Structure of Pilot Pump |
| Upperstructure, Control Valve | 147-198 | Removal and Installation of Control Valve, Disassembly of Control Valve 4-Spool Side, Disassembly of Control Valve 5-Spool Side, Assembly of Control Valve |
| Upperstructure, Swing Device | 199-234 | Removal and Installation of Swing Device, Disassembly and Assembly of Swing Device, Disassembly and Assembly of Swing Motor |
| Upperstructure, Pilot Valve and Electric Controls | 235-282 | Removal and Installation of Pilot Valve, Travel Pilot Valve, Assembly of Front/Swing Pilot Valves, Auxiliary/Positioning Pilot Valves, Electric Lever, Signal Control Valve |
| Upperstructure, Solenoid, Steering and Brake Valves | 283-334 | Shockless Valve, 3-Spool Solenoid Valve Unit, Pilot Shut-Off Solenoid Valve, Steering Valve, Brake Valve, Accumulator Charge Valve |
| Undercarriage, Swing Bearing, Travel Motor and Center Joint | 335-379 | Removal and Installation of Swing Bearing, Disassembly and Assembly of Travel Motor, Disassembly and Assembly of Brake Valve, Center Joint |
| Undercarriage, Transmission, Axles and Propeller Shaft | 380-488 | Removal and Installation of Transmission, Disassembly and Assembly of Transmission, Disassembly and Assembly of Front Axle, Disassembly and Assembly of Rear Axle, Axle Lock Cylinder, Operate Check Valve, Outrigger/Blade Solenoid Valve Unit, Propeller Shaft |
| Front Attachment | 489-605 | Hydraulic Circuit Pressure Release Procedure, Front Attachment (Monoblock Boom), Front Attachment (2-Piece Boom), Removal and Installation of Cylinder, Disassembly and Assembly of Positioning Cylinder, Hose Rupture Valve, Operate Check Valve (for Blade and Outrigger) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Light load operation time | 10 to 15 minutes | p. 41 |
| Tightening Torque for Union Nut (19 mm) | 29.5 N·m (3.0 kgf·m, 21.5 lbf·ft) | p. 53 |
| Tightening Torque for Union Nut (22 mm) | 69 N·m (7.0 kgf·m, 51 lbf·ft) | p. 53 |
| Gear oil drain amount | 1.0 L (0.3 US gal) | p. 111 |
| Upperstructure weight | 4800 kg | p. 98 |
| Pump device weight | 195 kg | p. 104 |
| Swing device weight | 225 kg | p. 200 |
| Front axle weight | 650 kg | p. 418 |
| Rear axle weight | 600 kg | p. 422 |
| Axle casing weight | 96 kg | p. 433 |
| ZX170W-3 | ||
| Counterweight weight | 3600 kg | p. 92 |
| ZX190W-3 | ||
| Counterweight weight | 4200 kg | p. 92 |
