Part of the Hitachi Repair Manuals.
This 267-page Hitachi EX25, EX35, EX40 Excavator Technical Manual (OEM #KM581E-01, T581-01) breaks down every upperstructure, undercarriage, electrical, and hydraulic group your machine runs on. Inside you get full wiring circuit diagrams, a complete hydraulic circuit section, and a dedicated troubleshooting chapter covering diagnosing procedure, hydraulic faults, and electrical faults side by side. You also open to a full operational performance test section: engine test, excavator test, and hydraulic component test, plus torque and fluid data pulled straight from the factory sheets. Change your hydraulic oil every 1000 hours, and swap the coolant twice a year, spring and autumn, per the soft-water spec. No more chasing a jerky boom or a hot engine with guesswork and forum threads. Bookmarked by section and fully text-searchable, so you can jump straight to Group 09 Solenoid Valve or the wiring circuit without scrolling through 267 pages by hand.
Complete the set for your EX25, EX35, EX40
- Parts Catalog: Hitachi EX35 Hydraulic Excavator Parts Catalog
- Parts Catalog: Hitachi EX25 Excavator Parts Catalog
- Parts Catalog: Hitachi EX40 Excavator Parts Catalog
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-18 | |
| Specifications | 19-64 | Group 01 General Information, Group 02 Dimensions and Weights, Group 03 Fuels and Lubricants, Group 04 Interchangeability |
| Upperstructure | 65-130 | Group 02 Tanks, Group 03 Pump Device, Group 04 Swing Device, Group 05 Pipings, Group 06 Control Valve, Group 07 Pilot Valve, Group 08 Pilot Shut-Off Valve, Group 09 Solenoid Valve |
| Undercarriage | 131-160 | Group 02 Swing Bearing, Group 03 Center Joint, Group 04 Travel Device, Group 05 Adjuster, Group 01 Outline |
| Electrical System | 161-166 | Group 01 Electrical Circuit |
| Hydraulic System | 167-172 | Group 01 Hydraulic Circuit |
| Operational Performance Test | 173-208 | Group 01 Introduction, Group 02 Engine Test, Group 03 Excavator Test, Group 04 Hydraulic Component Test |
| Troubleshooting | 209-267 | Group 01 Diagnosing Procedure, Group 02 Hydraulic System, Group 03 Electrical System |
Every system also includes contents.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Hydraulic System | SECTION 05 | p. 2 |
| Engine Test | Group 02 | p. 3 |
| Hydraulic oil replacement interval | 1000 (Hours) | p. 57 |
| Coolant change interval (Soft water) | Twice a year in spring and autumn | p. 60 |
| Air cleaner system | electronic indicator system | p. 118 |
| Fuel filter | 11 | p. 117 |
| Gradeability | 30° | p. 24 |
| EX25 | ||
| Engine Output Power, EX25 | 25 PS / 2400 rpm | p. 117 |
| EX35 | ||
| Engine Output Power, EX35 | 26 PS / 2200 rpm | p. 117 |
| EX40 | ||
| Engine Output Power, EX40 | 33 PS / 2200 rpm | p. 117 |
