Part of the Hitachi Repair Manuals.
Matched to the wheeled ZX140W-3 hydraulic excavator, this Hitachi ZX140W-3 workshop manual PDF carries factory document number WCEB-E-00 across 602 pages of removal, disassembly and assembly work. Undercarriage repair fills about a quarter of the book, taking the swing bearing, travel motor, center joint, transmission, axles and axle lock cylinder apart and back together. Above the turntable, the pump and regulator rebuild sits beside the 4-spool and 5-spool control valves, the swing motor, and the steering and brake valves only a wheeled machine carries; boom and arm cylinders and hose rupture valves close it out. Replace the fuel, oil filter and heater hoses every 2 years, and torque the engine cushion rubber mounting bolts to 235 N·m (175 lbf·ft). Nobody wants to split a brake valve twice. Bookmarks and a searchable text layer let you confirm the disassembly sequence before ordering, so the seal kit you buy matches your unit the first time.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 3-4 | Additional References, Manual Composition, Page Numbering, Safety Alert Symbols, Unit Conversion |
| Safety | 5-34 | Emergency Procedures, Protective Clothing, Cab Safety, Machine Inspection, Fire Prevention, Maintenance Safety |
| General Information | 35-64 | Precautions for Disassembling and Assembling, Tightening, Painting, Bleeding Air From Hydraulic Oil Tank |
| Cab and Counterweight | 65-96 | Cab Removal and Installation, Counterweight Removal and Installation, Main Frame Removal and Installation |
| Pump Device | 97-148 | Pump Device Removal and Installation, Disassembly of Pump Device, Assembly of Pump Device, Disassembly of Regulator, Assembly of Regulator, Structure of Pilot Pump |
| Control Valve | 149-196 | Control Valve Removal and Installation, Disassembly of 4-Spool Control Valve, Disassembly of 5-Spool Control Valve, Assembly of Control Valve, Positioning Control Valve |
| Swing Device | 197-234 | Swing Device Removal and Installation, Disassembly of Swing Device, Assembly of Swing Device, Disassembly of Swing Motor, Assembly of Swing Motor, Swing Dampener Valve |
| Pilot Valve | 235-274 | Pilot Valve Removal and Installation, Disassembly of Front/Swing Pilot Valves, Assembly of Front/Swing Pilot Valves, Electric Lever Removal and Installation |
| Signal Control Valve and Solenoid Valve | 275-312 | Signal Control Valve Removal and Installation, Solenoid Valve Unit Removal and Installation, Pilot Shut-Off Solenoid Valve, Structure of Signal Control Valve |
| Steering and Brake Valves | 313-340 | Steering Valve Removal and Installation, Brake Valve Removal and Installation, Disassembly of Brake Valve, Assembly of Brake Valve, Accumulator Charge Valve |
| Undercarriage | 341-498 | Group 1 Swing Bearing, Group 2 Travel Motor, Group 3 Center Joint, Group 4 Transmission, Group 5 Axle, Group 6 Axle Lock Cylinder, Group 7 Operate Check Valve |
| Front Attachment | 499-602 | Cylinder, Hose Rupture Valve, Operate Check Valve |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| ORS and metal face seal fittings for hydraulic hoses and piping (17 mm) | 24.5 N·m | p. 47 |
| ORS and metal face seal fittings for hydraulic hoses and piping (19 mm) | 30 N·m | p. 47 |
| Pressure sensor (68) removal tool size | 27 mm | p. 115 |
| Engine cushion rubber mounting nut torque | 140 N·m (14.0 kgf·m, 103 lbf·ft) | p. 47 |
| Engine cushion rubber mounting bolt torque | 235 N·m (24 kgf·m, 175 lbf·ft) | p. 47 |
| Hydraulic oil tank mounting bolt torque | 210 N·m (21.5 kgf·m, 155 lbf·ft) | p. 47 |
| Fuel tank mounting bolt torque | 210 N·m (21.5 kgf·m, 155 lbf·ft) | p. 47 |
| Swing device mounting bolt torque | 500 N·m (51 kgf·m, 370 lbf·ft) | p. 47 |
| Cab mounting nut torque | 210 N·m (21.5 kgf·m, 155 lbf·ft) | p. 47 |
| Swing bearing mounting bolt to upperstructure torque | 400 N·m (41.0 kgf·m, 295 lbf·ft) | p. 47 |
| Swing bearing mounting bolt to chassis torque | 270 N·m (27.5 kgf·m, 200 lbf·ft) | p. 47 |
| Transmission mounting bolts torque | 550 N·m (56.0 kgf·m, 410 lbf·ft) | p. 47 |
