Hyundai R80-7a Crawler Excavator Workshop Service Repair Manual
FILE DETAILS:
LANGUAGE:ENGLISH
PAGES:500+
DOWNLOADABLE:YES
FILE TYPE:PDF
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DESCRIPTION:
Hyundai R80-7a Crawler Excavator Workshop Service Repair Manual
1.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:
This section explains the computer aided power optimization system and each component.
SECTION 6 TROUBLESHOOTING:
This section explains the troubleshooting charts correlating 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:
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.
TABLE OF CONTENTS:
Hyundai R80-7a Crawler Excavator Workshop Service Repair Manual
SECTION 1 GENERAL
Group 1 Safety Hints 11
Group 2 Specifications 19
SECTION 2 STRUCTURE AND FUNCTION
Group 1 Pump Device 21
Group 2 Main Control Valve29
Group 3 Swing Device 228
Group 4 Travel Device238
Group 5 RCV Lever245
Group 6 RCV Pedal252
SECTION 3 HYDRAULIC SYSTEM
Group 1 Hydraulic Circuit 31
Group 2 Main Circuit 32
Group 3 Pilot Circuit35
Group 4 Single Operation310
Group 5 Combined Operation 322
SECTION 4 ELECTRICAL SYSTEM
Group 1 Component Location 41
Group 2 Electrical Circuit 43
Group 3 Electrical Component Specification 425
Group 4 Connectors 433
SECTION 5 MECHATRONICS SYSTEM
Group 1 Outline 51
Group 2 Mode Selection System53
Group 3 Travel Speed Control System 54
Group 4 Automatic Warming Up Function 55
Group 5 Engine Overheat Prevention Function 56
Group 6 AntiRestart System57
Group 7 SelfDiagnostic System 58
Group 8 Engine Control System 510
Group 9 Monitoring system 512
SECTION 6 TROUBLESHOOTING
Group 1 Before Trobleshooting 61
Group 2 Hydraulic and Mechanical System 64
Group 3 Electrical System 624
Group 4 Mechatronics System 640
SECTION 7 MAINTENANCE STANDARD
Group 1 Operational Performance Test71
Group 2 Major Components 720
Group 3 Track and Work Equipment 728
SECTION 8 DISASSEMBLY AND ASSEMBLY
Group 1 Precaution 81
Group 2 Tightening Torque 84
Group 3 Pump Device 87
Group 4 Main Control Valve 825
Group 5 Swing Device 837
Group 6 Travel Device 858
Group 7 RCV Lever883
Group 8 Turning Joint898
Group 9 Boom, Arm and Bucket Cylinder 8103
Group 10 Undercarriage 8121
Group 11 Work Equipment8133
SECTION 9 COMPONENT MOUNTING TORQUE
Group 1 Introduction Guide91
Group 2 Engine System 92
Group 3 Electric System 94
Group 4 Hydraulic System 96
Group 5 Undercarriage 98
Group 6 Structure99
Group 7 Work Equipment913
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