This is the most complete service repair manual for the Hyundai Robex 450LC-7 Crawler Excavator. This manual contains service,repair procedures,assembling,disassembling, wiring diagrams and everything you need to know. Service Repair Manual Covers: SECTION 1 GENERAL Group 1 Safety Hints Group 2 Specifications SECTION 2 STRUCTUREND FUNCTION Group 1 Pump Device Group 2 Main Control Valve Group 3 Swing Device Group 4 Travel Device Group 5 RCV Lever Group 6 RCV Pedal SECTION 3 HYDRAULIC SYSTEM Group 1 Hydraulic Circuit Group 2 Main Circuit Group 3 Pilot Circuit Group 4 Single Operation Group 5 Combined Operation SECTION 4 ELECTRICAL SYSTEM Group 1 Component Location Group 2 Electrical Circuit Group 3 Electrical Component Specification Group 4 Connectors SECTION 5 MECHATRONICS SYSTEM Group 1 Outline Group 2 Mode selection System Group 3 Automatic Deceleration System Group 4 Power Boost System Group 5 Travel Speed Control System Group 6 Automatic Warming Up Function Group 7 Engine Overheat Prevention Function Group 8 Anti-Restart System Group 9 Self-Diagnostic System Group 10 Engine Control System Group 11 EPPR(Electro Proportional Pressure Reducing) Valve Group 12 Monitoring system SECTION 6 TROUBLESHOOTING Group 1 Before troubleshooting Group 2 Hydraulic and Mechanical System Group 3 Electrical System Group 4 Mechatronics System SECTION 7 MAINTENANCE STANDARD Group 1 Operational Performance Test Group 2 Major Components Group 3 Track and Work Equipment SECTION 8 DISASSEMBLY AND ASSEMBLY Group 1 Precaution Group 2 Tightening Torque Group 3 Pump Device Group 4 Main Control Valve Group 5 Swing Device Group 6 Travel Device Group 7 RCV Lever Group 8 Turning Joint Group 9 Boom, Arm and Bucket Cylinder Group 10 Undercarriage Group 11 Work Equipment SECTION 9 COMPONENT MOUNTING TORQUE Group 1 Introduction guide Group 2 Engine system Group 3 Electric system Group 4 Hydraulic system Group 5 Undercarriage Group 6 Structure Group 7 Work equipment ================================================== High Quality PDF Manual,All pages are printable. Instant Download No Shipping Cost No Need to Wait For A CD-ROM File Format: PDF Language: English Compatible: All Versions of Windows & Mac Requirements: Adobe PDF Reader & WinZip Thanks for visiting.