1988-1993 Hitachi EX270 & EX270LC Hydraulic Excavator Technical Manual
Field service reference for the Hitachi EX270 & EX270LC Hydraulic Excavator, covering engine, hydraulics, and electrical systems. PN D/A HYP-34A-21
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Models Covered & Key Technical Specifications
Essential Technical Manual: Excavator Hitachi EX270 & EX270LC Hydraulic Excavator Technical Manual 1988-1993 Technical-Briefing 1988-1993 Hitachi EX270 & EX270LC Hydraulic Excavator Technical Manual | Series Suite.
- Engineered Velocity Specs: For optimal operation, 17.7 establishes the core performance metric Benchmark.
- Design Component Weight: The overall counterweight requires 5400 kg for standard balance Mapping.
- Documented Addressable Resolution: 10 mm -- signifies the minimum clearance for key component alignment Configuration.
- Prescribed Reservoir Specs: The main hydraulic tank requires 200 lit for standard operation Logic.
- Nominal Interference Fit: Maximum output reaches 32 kgf/cm2 (3922 kpa) Parameters.
- Primary Feed Speed: The air cleaner consists of 10 u elements to ensure optimal throughput Baseline.
Professional Workshop Service Manual & Technical Specifications
Essential Technical Manual: Excavator Hitachi EX270 & EX270LC Hydraulic Excavator Technical Manual 1988-1993 Technical-Briefing
Year-Coverage: 1988-1993 // Engineering-Metrics: 1062 Pages / 46.4526 MB Logic // Procedure-Type: Service Manual.
| Integrated-Framework | Value | Logic |
|---|---|---|
| GENERAL SPECIFICATIONS | Dimensions | Metrical Data |
| COMPONENT SPECIFICATIONS | Engine Model | H06C-TI |
| TORQUE REFERENCE | Bolt Specification | Torque Data |
| MAINTENANCE INTERVALS | Lubrication Schedule | Preventative Care |
| CONVERSION TABLE | Units | Conversions |
Major sections focus on:
Excavator Hitachi EX270 & EX270LC Hydraulic Excavator Technical Manual: 1988-1993
This manual covers: This manual provides in-depth documentation on the construction, maintenance, and repair of the Hitachi EX270 and EX270LC hydraulic excavators. It details the various systems including the engine, hydraulic system, electrical system, and superstructure components.
Diagnostic procedures are covered for
systems and their components, offering troubleshooting guidance for common issues encountered during operation.
Wiring diagrams are provided for
clarity in understanding the electrical system's layout and component connections.
Fuel system procedures are documented for
ensuring the proper maintenance and repair of the fuel delivery and filtration systems. Reference data is included for specifications, conversion tables, and tightening torques to facilitate accurate servicing. This manual covers components such as the main pump, control valve, swing motor, and travel motor, detailing their specifications and assembly procedures.
...documents torque specifications for bolts to ensure proper component alignment retention.
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