Part of the Hitachi Repair Manuals.
The ZX210W-3 and ZX220W-3 run a sensor-heavy control system that no parts catalog or forum thread explains end to end. This factory set does: 1764 pages holding three books - the Workshop Manual for teardown and assembly, Troubleshooting with the Operational Performance Test, and the Technical Manual on operating principle.
When a pump pressure sensor drops out of range and the machine cuts torque, guessing gets expensive. The troubleshooting flowcharts trace each code to a wire, a sensor, or a valve. The workshop chapters cover the pump device, swing device, transmission, and axles, with tightening torques printed where you need them.
Nobody stands beside you when a wheeled excavator quits and the crew waits. These pages do. Print the job you are on and let the copies get dirty.
What's Inside This Hitachi ZX210W-3, ZX220W-3 Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction and Safety | 1-38 | Manual Composition, Page Number System, Safety Alert Symbols, Recognize Safety Information, Follow Safety Instructions |
| Workshop - General | 39-66 | Precautions for Disassembling and Assembling, Tightening Torque Specifications, Painting, Bleeding Air From Hydraulic Oil Tank |
| Workshop - Upperstructure | 67-344 | Cab, Counterweight, Main Frame, Pump Device, Control Valve, Swing Device, Pilot Valve, Solenoid and Steering Valves, Accumulator Charge Valve |
| Workshop - Undercarriage | 345-499 | Swing Bearing, Travel Motor, Center Joint, Transmission, Front and Rear Axle, Axle Lock Cylinder, Propeller Shaft |
| Workshop - Front Attachment | 500-598 | Front Attachment, Cylinder, Hose Rupture Valve, Operate Check Valve |
| Troubleshooting - Introduction and Safety | 599-634 | Manual Composition, Safety Alert Symbols, Precautions Before Troubleshooting |
| Operational Performance Test | 635-725 | Introduction, Standard, Engine Test, Excavator Test, Component Test |
| Troubleshooting | 726-1234 | Monitor Unit, Troubleshooting a, Troubleshooting B, Electrical System Inspection |
| Technical - General | 1235-1285 | Specifications, Working Ranges, Component Specifications |
| Technical - System | 1286-1534 | Controller, Control System, ECM System, Electrical System |
| Technical - Component Operation | 1535-1764 | Pump Device, Control Valve, Swing Device, Travel Device, Steering Valve, Others |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine cushion rubber mounting bolt (Pump Upper) torque | 360 N-m | p. 47 |
| Engine cushion rubber mounting bolt (Pump Lower) torque | 210 N-m | p. 47 |
| Engine cushion rubber mounting nut (Fan Side) torque | 140 N-m | p. 47 |
| Engine bracket mounting bolt and nut torque | 50 N-m | p. 47 |
| Hydraulic oil tank mounting bolt torque | 210 N-m | p. 47 |
| Fuel tank mounting bolt torque | 210 N-m | p. 47 |
| ORS and metal face seal fittings for hydraulic hoses and piping torque | 24.5 N-m | p. 47 |
| Pump mounting bolt torque | 50 N-m | p. 47 |
Hitachi ZX210W-3, ZX220W-3 Common Problems This Manual Covers
Pump torque reduction alarm or sudden loss of digging power with a pressure sensor code on the monitor
Start with the pump delivery pressure sensor charts in Troubleshooting A, then move to Electrical System Inspection for the sensor voltage and connector checks. Most of these faults turn out to be a corroded plug or a dead sensor, not a worn pump.
Manual Section: Troubleshooting - Troubleshooting A / Electrical System Inspection p. 599Engine cranks but will not start, or starts intermittently
Work the no-start symptom charts in Troubleshooting B before buying parts. Electrical System Inspection shows how to test the engine sensors and their harness connectors, and the ECM System section in Technical - System explains what the controller expects to see during cranking.
Manual Section: Troubleshooting - Troubleshooting B / Technical - System, ECM System p. 599Weak, slow, or noisy hydraulics on boom, arm, or swing
Run the excavator and component checks in the Operational Performance Test book and compare readings against the Standard tables. If a pump is down, Workshop - Upperstructure covers pump device removal, and Technical - Component Operation explains the regulator so adjustments land right.
Manual Section: Operational Performance Test / Workshop - Upperstructure, Pump Device p. 635Sluggish travel or steering trouble on the wheeled undercarriage
Verify performance first with the Component Test procedures, then open Workshop - Undercarriage, which covers the travel motor, transmission, front and rear axles, propeller shaft, and axle lock cylinder, with the tightening values needed to put everything back together.
Manual Section: Workshop - Undercarriage / Technical - Component Operation, Steering Valve p. 39Frequently Asked Questions
Why is my Hitachi ZX210W-3 showing an error code and losing power?
Usually a sensor reading out of range, and the machine derates to protect itself. A known fault on these models is low voltage from a pump delivery pressure sensor, which triggers pump torque reduction. Troubleshooting A works from the code on the monitor, and Electrical System Inspection gives the actual voltage and connector checks. One correctly traced sensor fault pays for the book. p. 726
Can I clear or reset error codes on the ZX220W-3?
A code that keeps returning has a live fault behind it. The Monitor Unit section of the Troubleshooting book explains the display and code readout. Troubleshooting A then traces each code to the sensor, wiring, or valve causing it. Fix that, and the code stops coming back. p. 726
Does the manual list torque specs for the ZX210W-3 and ZX220W-3?
Yes. The Workshop - General section carries the standard tightening torque tables, and each removal and installation job lists its own values. For example: hydraulic oil tank mounting bolts at 210 N-m, pump mounting bolts at 50 N-m, ORS hose fittings at 24.5 N-m. p. 39
Is this one manual or several?
Three factory books in one 1764-page PDF. The Workshop Manual covers disassembly and assembly of the upperstructure, undercarriage, and front attachment. The Troubleshooting book includes the full Operational Performance Test standards. The Technical Manual explains how the pump, control valve, swing, travel, and steering systems actually work. Both models are covered throughout. p. 635
Is the PDF searchable by keyword?
No. It is a scan of the factory paper manual with no text layer, so keyword search will not work. Navigate by the section structure and the page number system explained in the introduction. It prints cleanly, so print the pages for the job and take them to the machine. p. 1
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