Hyundai HX480,520L Crawler Excavator Service Repair Manual
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Hyundai HX480,520L Crawler Excavator Service Repair Manual
FOREWORD
GENERAL 1. Safety hints 2. Specifications
STRUCTURE AND FUNCTION 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. Electric 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. Variable power control system 9. Attachment flow control system 10. Boom floating control system 11. Intelligent power control system
| 12. Anti-restart system 13. Self-diagnostic system 14. Engine control system 15. EPPR valve 16. Monitoring system 17. 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 valver 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
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Hyundai HX480,520L Crawler Excavator Service Repair Manual
STRUCTURE
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. Make sure you understand the contents of this manual and
use it to full effect at every opportunity.
This service manual mainly contains the necessary technical information for operations performed in
a service workshop.
For ease of understanding, the manual is divided into the following sections.
SECTION 1 GENERAL
This section explains the safety hints and gives the specification of the machine and major
components.
SECTION 2 STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an
understanding of the structure, but also serves as reference material for troubleshooting.
SECTION 3 HYDRAULIC SYSTEM
This section explains the hydraulic circuit, single and combined operation.
SECTION 4 ELECTRICAL SYSTEM
This section explains the electrical circuit, monitoring system and each component. It serves not
only to give an understanding electrical system, but also serves as reference material for trouble
shooting.
SECTION 5 MECHATRONICS SYSTEM SECTION 5 MECHATRONICS SYSTEM
This section explains the computer aided power optimization system and each component.
SECTION 6 TROUBLESHOOTING
This section explains the troubleshooting charts correlating problems problems to causes.
SECTION 7 MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts.
SECTION 8 DISASSEMBLY AND ASSEMBLY
This section explains the order to be followed when removing, installing, disassembling or
assembling each component, as well as precautions to be taken for these operations.
SECTION 9 COMPONENT MOUNTING TORQUE SECTION 9 COMPONENT MOUNTING TORQUE
This section shows bolt specifications and standard torque values needed when mounting
components to the machine.
The specifications contained in this shop manual are subject to change at any time and without any
advance notice. Contact your HYUNDAI distributor for the latest information.
Please Note:
⦁ This is the same manual used by the DEALERSHIPS to SERVICE your vehicle.
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