Complete workshop & service manual with electrical wiring diagrams for Hyundai Construction Crawler Excavator HX300L. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Hyundai Construction Crawler Excavator HX300L service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

EXCERPT:
CONTENTS
SECTION 1 GENERAL
Group 1 Safety Hints - - - - - - 1-1
Group 2 Specifications - - - - - - - - - 1-10
SECTION 2 STRUCTURE AND FUNCTION
Group 1 Pump Device - - - - 2-1
Group 2 Main Control Valve - - - - - - - 2-20
Group 3 Swing Device - - - - 2-60
Group 4 Travel Device - - - - 2-71
Group 5 RCV Lever - - - - - - - - 2-85
Group 6 RCV Pedal - - - - - - - - 2-92
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 - - - - 3-14
Group 5 Combined Operation - - - - - - - - - 3-24
SECTION 4 ELECTRICAL SYSTEM
Group 1 Component Location - - - - - - - - - 4-1
Group 2 Electric Circuit - - - - - - - - 4-3
Group 3 Electrical Component Specification - - - - - - - - - 4-23
Group 4 Connectors - - - - - - - 4-32
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 Variable Power Control System - - - - 5-11
Group 9 Attachment Flow Control System - - - - - - - 5-12
Group 10 Boom Floating Control System - - - - 5-13
Group 11 Intelligent Power Control System - - - - - - - 5-14
Group 12 Anti-Restart System - - - - - 5-16
Group 13 Self-Diagnostic System - - - - - 5-17
Group 14 Engine Control System - - - - - 5-53
Group 15 EPPR (Electro Proportional Pressure Reducing) Valve - - - - - - 5-54
Group 16 Monitoring System - - - - - - - 5-59
Group 17 Fuel Warmer System - - - - - - - - - 5-94
SECTION 6 TROUBLESHOOTING
Group 1 Before Troubleshooting - - - - - - 6-1
Group 2 Hydraulic and Mechanical System - - - - - 6-4
Group 3 Electrical System - - - - - - - - - 6-24
Group 4 Mechatronics System - - - - - - - - 6-40
SECTION 7 MAINTENANCE STANDARD
Group 1 Operational Performance Test - - - - - - 7-1
Group 2 Major Components - - - - - - 7-21
Group 3 Track and Work Equipment - - - - - 7-32
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 - - - - 8-56
Group 6 Travel Device - - - - 8-80
Group 7 RCV Lever - - - - - - - - 8-113
Group 8 Turning Joint - - - - - 8-127
Group 9 Boom, Arm and Bucket Cylinder - - - - - - - - 8-132
Group 10 Undercarriage - - - - - - - - 8-149
Group 11 Work Equipment - - - - 8-161
SECTION 9 COMPONENT MOUNTING TORQUE
Group 1 Introduction guide - - - - - - - - 9-1
Group 2 Engine system - - - - - - - 9-2
Group 3 Electric system - - - - - - - 9-4
Group 4 Hydraulic system - - - - - - - - - 9-6
Group 5 Undercarriage - - - - - - - - 9-9
Group 6 Structure - - - - - 9-10
Group 7 Work equipment - - - - - 9-15
Group 9 Attachment Flow Control System - - - - - - - 5-12
Group 10 Boom Floating Control System - - - - 5-13
Group 11 Intelligent Power Control System - - - - - - - 5-14
Group 12 Anti-Restart System - - - - - 5-16
Group 13 Self-Diagnostic System - - - - - 5-17
Group 14 Engine Control System - - - - - 5-53
Group 15 EPPR (Electro Proportional Pressure Reducing) Valve - - - - - - 5-54
Group 16 Monitoring System - - - - - - - 5-59
Group 17 Fuel Warmer System - - - - - - - - - 5-94
SECTION 6 TROUBLESHOOTING
Group 1 Before Troubleshooting - - - - - - 6-1
Group 2 Hydraulic and Mechanical System - - - - - 6-4
Group 3 Electrical System - - - - - - - - - 6-24
Group 4 Mechatronics System - - - - - - - - 6-40
SECTION 7 MAINTENANCE STANDARD
Group 1 Operational Performance Test - - - - - - 7-1
Group 2 Major Components - - - - - - 7-21
Group 3 Track and Work Equipment - - - - - 7-32
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 - - - - 8-56
Group 6 Travel Device - - - - 8-80
Group 7 RCV Lever - - - - - - - - 8-113
Group 8 Turning Joint - - - - - 8-127
Group 9 Boom, Arm and Bucket Cylinder - - - - - - - - 8-132
Group 10 Undercarriage - - - - - - - - 8-149
Group 11 Work Equipment - - - - 8-161
SECTION 9 COMPONENT MOUNTING TORQUE
Group 1 Introduction guide - - - - - - - - 9-1
Group 2 Engine system - - - - - - - 9-2
Group 3 Electric system - - - - - - - 9-4
Group 4 Hydraulic system - - - - - - - - - 9-6
Group 5 Undercarriage - - - - - - - - 9-9
Group 6 Structure - - - - - 9-10
Group 7 Work equipment - - - - - 9-15
…
GROUP 2 MAIN CIRCUIT
The main hydraulic circuit consists of suction circuit, delivery circuit, return circuit and drain circuit.
The hydraulic system consists of one main pump, one control valve, one swing motor, four cylinders and two travel motors.
The swash plate type variable displacement tandem axial piston pump is used as the main pump and is driven by the engine at ratio 1.0 of engine speed.
1. SUCTION AND DELIVERY CIRCUIT
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