CONTENTS
SECTION 1 GENERAL
Group 1 Safety Hints
1-1
Group 2 Specifications
1-9
SECTION 2 STRUCTURE AND FUNCTION
Group 1 Pump Device
2-1
Group 2 Main Control Valve
2-21
Group 3 Swing Device
2-43
Group 4 Travel Device
2-54
Group 5 RCV Lever
2-60
Group 6 Accelerator Pedal
2-67
Group 7 Brake Pedal
2-68
Group 8 Transmission
2-71
Group 9 Transmission control valve
2-78
Group 10 Steering Valve
2-80
Group 11 Axle
2-82
SECTION 3 HYDRAULIC SYSTEM
Group 1 Hydraulic Circuit
3-1
Group 2 Main Circuit
3-2
Group 3 Pilot Circuit
3-5
Group 4 Single Operation
3-13
Group 5 Combined Operation
3-28
SECTION 4 ELECTRICAL SYSTEM
Group 1 Component Location
4-1
Group 2 Electrical Circuit
4-3
Group 3 Electrical Component Specification
4-22
Group 4 Connectors
4-31
SECTION 5 MECHATRONICS SYSTEM
Group 1 Outline
5-1
Group 2 Mode Selection System
5-3
Group 3 Automatic Deceleration System
5-6
Group 4 Power Boost System
5-7
Group 5 Travel Speed Control System
5-8
Group 6 Automatic Warming Up Function
5-9
Group 7 Engine Overheat Prevention Function
5-10
Group 8 Anti-Restart system
5-11
Gropu 9 Self-Diagnostic System
5-12
Group 10 Engine Control System
5-15
Group 11 EPPR(Electro Proportional Pressure Reducing) Valve
5-22
Group 12 Monitoring system
5-25
SECTION 6 TROUBLESHOOTING
Group 1 Before Troubleshooting
6-1
Group 2 Hydraulic and Mechanical System
6-4
Group 3 Electrical System
6-23
Group 4 Mechatronics System
6-39
SECTION 7 MAINTENANCE STANDARD
Group 1 Operational Performance Test
7-1
Group 2 Major Components
7-19
Group 3 Work Equipment
7-28
SECTION 8 DISASSEMBLY AND ASSEMBLY
Group 1 Precaution
8-1
Group 2 Tightening Torque
8-4
Group 3 Pump Device
8-7
Group 4 Main Control Valve
8-30
Group 5 Swing Device
8-44
Group 6 Travel Motor
8-67
Group 7 Transmission
8-91
Group 8 Steering Valve
8-146
Group 9 Front Axle
8-171
Group 10 Rear Axle
8-239
Group 11 RCV Lever
8-282
Group 12 Turning Joint
8-297
Grou