Hyundai R250LC-7A Repair Manual [Crawler Excavator]

Factory Service Repair Manual For Hyundai R250LC-7A. Step by step Instructions, illustrations, diagrams. This service manual has been prepared as an aid to improve the quality of repairs by giving the
serviceman an accurate understanding of the product and by showing him the correct way to
perform repairs and make judgements.

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Models

Hyundai R250LC-7A Crawler Excavator

Contents

FOREWORD
CONTENTS
GENERAL
1 Safety Hints
2 Specifications
STRUCTURED
1 Pump Device
2 Main Control Valve
3 Swing Device
4 Travel Device
5 RCV Lever
6 RCV Pedal
HYDRAULIC SYSTEM
1 Hydraulic Circuit
2 Main Circuit
3 Pilot Circuit
4 Single Operation
5 Combined Operation
ELECTRICAL SYSTEM
1 Component Location
2 Electrical Circuit
3 Electrical Component Specification
4 Connectors
MECHATRONICS SYSTEM
1 Outline
2 Mode selection System
3 Automatic Deceleration System
4 Power Boost System
5 Travel Speed Control System
6 Automatic Warming Up Function
7 Engine Overheat Prevention Function
8 Anti-Restart System
9 Self-Diagnostic System
10 Engine Control System
11 EPPR(Electro Proportional Pressure Reducing) Valve
12 Monitoring System
13 Fuel warmer System
TROUBLESHOOTING
1 Before troubleshooting
2 Hydraulic and Mechanical System
3 Electrical System
4 Mechatronics System
MAINTENANCE STANDARD
1 Operational Performance Test
2 Major Components
3 Track and Work Equipment
DISASSEMBLY AND ASSEMBLY
1 Precaution
2 Tightening Torque
3 Pump Device
4 Main Control Valve
5 Swing Device
6 Travel Device
7 RCV Lever
8 Turning Joint
9 Boom, Arm and Bucket Cylinder
10 Undercarriage
11 Work Equipment
COMPONENT MOUNTING TORQUE
1 Introduction guide
2 Engine system
3 Electric system
4 Hydraulic system
5 Undercarriage
6 Structure
7 Work equipment