Hitachi ZW550-6 Wheel Loader Service Manual

Product Overview

The comprehensive service manual for the Hitachi ZW550-6 Wheel Loader provides essential information to ensure the maintenance and efficient operation of this equipment. This manual is in PDF format and available in English.

Key Features

• Service Manual (Troubleshooting): 504 pages
• Operation Manual: 489 pages
• Workshop Manual: 828 pages
• Circuit Diagram: 17 pages

Benefits

• Provides detailed technical information needed for operation, maintenance, troubleshooting, and repair tasks.
• Includes guidance on the use of tools and devices necessary for repair and maintenance.
• Outlines operational performance tests and troubleshooting procedures vital for optimal functioning.

Usage Recommendations

• Ideal for operators and technicians involved in the maintenance and repair of the Hitachi ZW550-6 Wheel Loader.
• Recommended for thorough understanding and execution of machine troubleshooting and repairs.

Contents Overview

Workshop Manual Table of Contents

The comprehensive workshop manual includes sections on:

• Section 1: General Information
• Section 2: Maintenance Standard
• Section 3: Body
• Details on specific components such as cab, counterweight, engine, and hydraulic systems.

Operation Manual Table of Contents

The operation manual is divided into key sections such as:

• Section 1: General Specifications
• Section 2: System Control
• Includes engine, hydraulic, and electrical systems.

Troubleshooting Insights

• Address actuator speed issues of the front attachment and steering.
• Follow detailed procedures to diagnose potential faults in components and systems.

Procedure	Inspection Method	Condition	Evaluation	Cause
1	Monitor Main Pump Delivery Pressure	No steering or loading operation Engine: High idling	The measured value exceeds 3.5 ~ 5.0 MPa (508 ~ 725 psi)	Faulty bleed-off compensation spool (stuck)
2	Measure steering time (full turn) and lift arm raising time (fully up)	Disconnect the connector of torque control solenoid valve	Both times out of range (Full turn: 4.70.5 sec, Lift arm: 8.00.3 sec)	Faulty torque control solenoid valve, Faulty main pump, Faulty main pump regulator
			Only steering time out of range: 4.70.5 sec (full turn)	Faulty steering valve, Circuit issue after steering pilot valve
			Only lift arm raising time out of range: 8.0 0.3 sec (fully up)	Faulty multiple control valve, Pilot circuit issue after pilot valve
			Both times within normal range	Faulty torque control solenoid valve, Faulty Main Controller (SC)