Part of the Hitachi Repair Manuals.
Wrenching on a Hitachi EX45? This 568-page Hitachi EX45 service manual PDF (OEM #KM510E-01) combines the full Technical Manual and Workshop Manual for the compact excavator, and it covers the EX12, EX15, EX22, EX25, and EX30 too. You get complete wiring diagrams and hydraulic schematics, a full troubleshooting section for electrical and hydraulic faults, and torque tables for the upperstructure, undercarriage, front attachment, and engine. Page after page of teardown procedures and exploded views walk you through pump, swing, and travel work bolt by bolt. Before you condemn a pump, run the operational performance test: measure relief valve pressure, cylinder cycle times, and swing speed against the factory tables. No more chasing wiring faults with a multimeter and a prayer. Bookmarked and text-searchable; download it, pull it up on your phone next to the machine, and get to work.
Complete the set for your EX45
- Parts Catalog: Hitachi EX45 Parts Catalog
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 6-19 | Safety Alert Symbols, Emergency Procedures, Operating and Maintenance Precautions, Decals |
| Technical Manual - Specifications | 20-45 | Machine Specifications, Working Ranges, Component Layout, Weights and Dimensions, Serial Numbers |
| Technical Manual - Upperstructure | 46-95 | Hydraulic Pump and Regulator, Control Valve, Swing Device, Pilot Valves, Cylinders, Swivel Joint Operation |
| Technical Manual - Undercarriage | 96-117 | Travel Device and Reduction Gear, Track Frame, Rollers and Idlers, Track Adjuster Operation |
| Technical Manual - Electrical and Hydraulic Systems | 118-125 | Electrical Component Layout, Monitor and Sensors, Wiring Schematics, Hydraulic Main and Pilot Circuits |
| Operational Performance Test | 126-153 | Engine Speed, Compression Pressure, Hydraulic Pressure and Flow Tests, Cycle Times, Standard Values and Adjustment |
| Technical Manual - Troubleshooting | 154-215 | Diagnosing Procedure, Engine Faults, Hydraulic and Electrical Troubleshooting Charts, Sensor Checks |
| Workshop Manual - Specifications and Precautions | 216-225 | Disassembly and Assembly Precautions, Tightening Torques, Sealants and Adhesives |
| Workshop Manual - Upperstructure | 226-309 | Counterweight and Canopy, Hydraulic Pump, Control Valve, Swing Motor and Reduction Gear, Cylinders, Swivel Joint Disassembly and Assembly |
| Workshop Manual - Undercarriage | 310-365 | Travel Motor and Reduction Gear Disassembly, Track Frame, Rollers, Idler and Track Adjuster, Wear Limits |
| Workshop Manual - Front Attachment | 366-395 | Boom, Arm and Bucket Removal, Pins and Bushings, Wear Limits and Clearances |
| Workshop Manual - Special Tools | 396-401 | Special Tool List, Puller and Press Fixtures, Measuring Equipment |
| Engine and Accessories - Full Repair Section (Bundled Engine Manual) | 402-568 | Engine Specifications, Disassembly and Reassembly, Cylinder Head and Valves, Piston, Rod and Crankshaft, Lubrication and Cooling Systems, Fuel Injection Pump and Nozzles, Starter and Alternator, Wear Limits and Torque Values |
Every system also includes contents, an index, specifications, undercarriage, and upperstructure.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydraulic System | SECTION 05 | p. 2 |
| Engine Test | Group 02 | p. 4 |
| Replace full-flow filter element | 1 | p. 38 |
| Fuel filter | monthly | p. 89 |
| Main relief pressure | 23 ± 0.98 MPa (235 ± 10 kgf/cm²) | p. 150 |
| Clearance between the outside diameter of the piston and the inside diameter of the rotor | D-d≤0.050 mm | p. 247 |
| Clearance between the piston and the shoe | δ≤0.2 mm | p. 247 |
| Clearance between the piston and piston shoe | δ≤0.2 mm | p. 334 |
| Point A Standard | 135 (5.31) | p. 375 |
