Part of the Hitachi Repair Manuals.
This Hitachi ZAXIS30–ZAXIS50 Series Technical Manual PDF (OEM #T1LSE-00) packs 259 pages of factory service data for the ZAXIS 30, 35, 40, and 50 hydraulic excavators. Inside: full hydraulic schematics tracing the pilot and main circuits, wiring diagrams down to the preheat and charging circuits, and a full troubleshooting section built around Hitachi's own diagnosing procedure. You also get component operation breakdowns for the pump device, swing device, control valve, and travel device, plus a complete operational performance test section with standards and adjustments. Verify your main pumps flow 39.1 L/min on the 30 and 35, or 42.0 L/min on the 40 and 50, and check the return and pilot filters against the 30-micron spec. No more chasing pilot pressure faults on guesswork. Bookmarked, keyword-searchable, and ready on any device in the shop.
What's Inside This Hitachi ZAXIS30, ZAXIS35, ZAXIS40, ZAXIS50 Manual
| System | Pages | Key Topics |
|---|---|---|
| Technical Manual | 1 | Specifications, Component Layout, Component Specifications, Hydraulic System, Electrical System, Operational Performance Test |
| Introduction | 2-4 | To the Reader, Additional References, Manual Composition, Page Number, Safety Alert Symbol and Headline Notations, Units Used |
| Safety | 5-32 | Recognize Safety Information, Understand Signal Words, Follow Safety Instructions, Prepare for Emergencies, Wear Protective Clothing, Protect Against Noise, Inspect Machine |
| General | 33-58 | Group 1 Specification (Specifications, Working Ranges), Group 2 Component Layout (Main Component, Electrical System, Relays, Monitor and Switches) |
| System | 59-82 | Group 1 Hydraulic System (Outline, Pilot Circuit, Main Circuit) |
| Component Operation | 83-156 | Group 1 Pump Device, Group 2 Swing Device, Group 3 Control Valve, Group 4 Pilot Valve, Group 5 Travel Device, Group 6 Others, Group 7 Others |
| Operational Performance Test | 157-210 | Group 1 Introduction, Group 2 Standard, Group 3 Engine Test, Group 4 Excavator Test, Group 5 Component Test, Group 6 Adjustment |
| Troubleshooting | 211-256 | Group 1 Diagnosing Procedure, Group 2 Troubleshooting a, Group 3 Troubleshooting B, Group 4 Electrical System Inspection |
| Diagrams | 257-259 | Electrical Circuit Diagram, Zaxis 30, Hydraulic Circuit Diagram, Zaxis 40, 50 Hydraulic Circuit Diagram |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Main Pump 1, 2 Maximum Flow (Theoretical Value) ZAXIS30, 35 | 39.1 L/min | p. 51 |
| Main Pump 1, 2 Maximum Flow (Theoretical Value) ZAXIS40, 50 | 42.0 L/min | p. 51 |
| Air Filter Indicator Operation Pressure | -6.23 kPa ± 5% | p. 57 |
| Fuel Filter Filtration | 15 µm | p. 57 |
| Tightening torque for lock nut on 2-unit solenoid valve | 19.5 to 29.5 N·m | p. 197 |
| Tightening torque for lock nut on main relief valve | 28 to 31 N·m | p. 201 |
| ZAXIS30, 35 | ||
| Return Filter Filtration | 30 µm | p. 57 |
| Pilot Filter Filtration | 30 µm | p. 57 |
| Overload relief valve torque | 59 to 69 N·m | p. 236 |
| ZAXIS40, 50 | ||
| Overload relief valve lock nut torque | 27 to 31 N·m | p. 236 |
| ZAXIS30, ZAXIS35 | ||
| Rated Output (ZAXIS30, ZAXIS35) | 19.9 kW/2300 min-1 | p. 43 |
| ZAXIS40, ZAXIS50 | ||
| Rated Output (ZAXIS40, ZAXIS50) | 26.5 kW/2100 min-1 | p. 46 |
