Hitachi ZX250LC-7 / ZX250LCN-7 Hydraulic Excavator Workshop Manual (Part No. WDFY50-EN-00)

Hitachi ZX250LC-7 / ZX250LCN-7 Hydraulic Excavator — Workshop Manual

This workshop manual is dedicated to the Hitachi ZX250LC-7 and ZX250LCN-7 hydraulic excavators. It is designed as a hands-on service reference, focusing on disassembly, assembly, inspection, and adjustment procedures used in real workshop conditions.

The manual follows the structure used by Hitachi Construction Machinery for professional service documentation, starting with safety and general information and moving through complete machine systems such as the upperstructure, undercarriage, hydraulic components, and front attachment.

Related Manuals in This Series

This workshop manual is part of a complete service documentation set for the Hitachi ZX250LC-7 and ZX250LCN-7 hydraulic excavators. Depending on the task, technicians may need to refer to additional manuals from the same series, each focusing on a specific aspect of machine operation, diagnostics, or engine service.

Using these manuals together provides a clearer understanding of machine systems, from operational principles and fault diagnosis to detailed repair procedures and engine-specific service information.

Item Details

Machine Models: ZX250LC-7, ZX250LCN-7
Machine Type: Hydraulic Excavator
Manual Type: Workshop Manual
Part Number: WDFY50-EN-00
Language: English
Format: Digital manual (PDF)
Publisher: Hitachi Construction Machinery Co., Ltd.

This manual is intended for service technicians, mechanics, and workshops that require detailed, model-specific procedures rather than general operational guidance.

Manual Structure and Scope

The workshop manual is organized to support step-by-step service work. Early sections establish terminology, symbols, safety rules, and reference conventions used throughout the document. Later sections move into detailed procedures for each major machine system.

Introduction and Reference Information

Introduction and notes to the reader
Manual composition and page numbering system
Units used, trademarks, symbols, and abbreviations
Contrasting list of part names between technical manual and parts catalog

Safety Information

A significant portion of the manual is dedicated to safety. These sections explain how to recognize safety information, understand signal words, and apply precautions during operation, transport, maintenance, and repair.

General safety rules and emergency preparation
Operator protection and cab-related precautions
Safe machine operation, travel, and worksite awareness
Fire prevention, fluid handling, and battery safety
Welding, grinding, and high-pressure system precautions
Environmental and waste disposal guidelines

General Service and Maintenance Standards

Before diving into component-level work, the manual defines general rules for disassembling, assembling, tightening, painting, bleeding air, and preparing components for service. Maintenance standards are outlined for the upperstructure, undercarriage, and front attachment.

Upperstructure

The upperstructure section covers the cab, engine, cooling components, fuel and hydraulic systems, and major structural elements. Procedures are presented in logical sequences to reduce the risk of damage during removal and installation.

Cab structure, glass, interior and exterior components
Counterweight and main frame
Engine removal, installation, and related components
Radiator, intercooler, oil cooler, and hydraulic oil tank
Fuel tank and pump device

Detailed disassembly and assembly instructions are provided for the control valve, including A-side and B-side components, spools, relief valves, check valves, and flow control valves. These sections are especially valuable for hydraulic troubleshooting and overhaul work.

Hydraulic and Control Systems

A large portion of the manual is dedicated to hydraulic control systems, covering pilot valves, swing devices, travel systems, and auxiliary circuits. Each procedure focuses on safe handling, correct reassembly, and functional verification after service.

Pilot valves and travel pilot valve assemblies
Swing device, reduction gear, and swing motor
Solenoid valves and signal control valves
Aftertreatment device and DEF-related components

Undercarriage and Front Attachment

The undercarriage section includes service procedures for the swing bearing, travel device, center joint, track adjuster, rollers, and track assembly. The front attachment section focuses on cylinders, hose rupture valves, and related hydraulic components.

Additional Documentation ELECTRICAL CIRCUIT DIAGRAM

Electrical circuit diagram
Connectors overview
Cab harness
Main harness
Pump harness
NOx harness
Monitor harness
Console harness
Control valve harness
Wiper harness
Wiper motor harness
Pilot shut-off solenoid valve harness
Engine stop switch harness
Cigar lighter sub harness
Radiator sub harness
Hydraulic circuit diagram (mono boom)
Hydraulic circuit diagram (option: 2-piece boom, AFL 1ch)
Hydraulic circuit diagram (option: 2-piece boom, AFL 2ch)

Delivery (Instant Download)

This workshop manual is supplied as a digital PDF file and is available for instant download after purchase. No physical items are shipped. For practical use, many technicians keep the file accessible on a workshop computer or tablet and maintain a backup copy for reference.

References

Hitachi ZX250LC-7 / ZX250LCN-7 Hydraulic Excavator Workshop Manual (Part No. WDFY50-EN-00)

Hitachi ZX250LC-7 / ZX250LCN-7 Hydraulic Excavator Workshop Manual (Part No. WDFY50-EN-00)