Part of the Hitachi Repair Manuals.
All 843 pages of this Hitachi EX 200-2 technical manual PDF cover one job: putting your hydraulic excavator back to factory spec, from the upperstructure pump device down to the last track bushing. You get full hydraulic schematics with circuit routing, wiring diagrams for the 24-volt electrical system, and a thick troubleshooting section built on performance checks instead of guesswork. Step-by-step procedures walk you through pump disassembly, control valve spool work, swing motor rebuilds, travel device teardown, and track link replacement, backed by tightening torque tables. When the oil pressure lamp comes on, pressure has fallen below 0.4 kgf/cm2 (5.7 psi); once coolant passes 101 C (213.8 F), the overheat buzzer sounds, and the diagnostic charts tell you why. An idle excavator earns nothing. Bookmarked and keyword-searchable: pull it up on your phone in the shop and start wrenching.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Technical Manual Hitachi Ex 200-2 | 1-235 | Introduction, Safety, Technical Manual Ex200-2 |
| Performance Check and Troubleshooting Hitachi Ex 200-2 | 236-459 | Technical Manual Ex200-2 |
| Specifications | 460-468 | Tightening Torque, Painting Standards |
| Upperstructure - Cab, Counterweight, Main Frame | 469-481 | Cab Removal, Counterweight Removal, Main Frame Installation |
| Upperstructure - Pump Device | 482-518 | Pump Device Disassembly, Pilot Gear Pump, Pump Assembly |
| Upperstructure - Control Valve | 519-564 | Control Valve Removal, Spool Assembly, Relief Valve Adjustment |
| Upperstructure - Swing Device and Dampener Valve | 565-712 | Swing Device Removal, Swing Motor, Swing Dampener Valve, Relief Valve |
| Undercarriage - Swing Bearing, Travel Device, Center Joint | 713-797 | Swing Bearing, Travel Device Disassembly, Travel Motor, Center Joint |
| Undercarriage - Track Adjuster, Front Idler, Rollers | 798-835 | Track Adjuster, Front Idler, Upper Roller, Lower Roller |
| Undercarriage - Track Link | 836-843 | Track Link Removal, Master Pin, Track Bushing, Grouser Shoe |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuse 11-20 | 20A | p. 133 |
| Battery voltage | 24 volts | p. 161 |
| Engine oil pressure | 0.4kgf/cm2 (5.7psi) | p. 172 |
| Overheat indicator coolant temperature | 101°C (213.8°F) | p. 172 |
| Swing speed | 11 min-1 | p. 17 |
| Travel speed (fast) | 5.5 km/h | p. 17 |
