This manual contains maintenance and repair procedures for the Hyundai Crawler Excavator R55-7A. It provides step-by-step instructions, highly detailed exploded pictures, and diagrams to assist both professional mechanics and DIY enthusiasts in maintaining, servicing, diagnosing, and repairing the excavator correctly and efficiently.
The manual covers the following:
SECTION 1
GENERAL
Safety Hints
Specifications
SECTION 2
STRUCTURE AND FUNCTION
Pump Device
Main Control Valve
Swing Device
Travel Motor
RCV Lever
SECTION 3
HYDRAULIC SYSTEM
Hydraulic Circuit
Main Circuit
Pilot Circuit
Single Operation
Combined Operation
SECTION 4
ELECTRICAL SYSTEM
Component Location
Monitoring System
Electrical Circuit
Electrical Component Specification
Connectors
SECTION 5
TROUBLESHOOTING
Before Troubleshooting
Hydraulic and Mechanical System
Electrical System
SECTION 6
MAINTENANCE STANDARD
Operating Performance Test
Major Components
Track and Work Equipment
SECTION 7
DISASSEMBLY AND ASSEMBLY
Precaution
Tightening Torque
Pump Device
Main Control Valve
Swing Device
Travel Device
RCV Lever
Turning Joint
Boom, Arm, Bucket Cylinder
Undercarriage
Work Equipment
SECTION 8
COMPONENT MOUNTING TORQUE
Introduction guide
Engine system
Electric system
Hydraulic system
Undercarriage
Structure
Work equipment
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