Hyundai Robex 80CR-9 Service Manual
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Hyundai Robex 80CR-9 Service Manual

Crawler excavator
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Robex 80CR-9
CRAWLER EXCAVATOR
SERVICE MANUAL

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  • Page 1 Robex 80CR-9 CRAWLER EXCAVATOR SERVICE MANUAL...

  • Page 2: Table Of Contents

    Table of Content FOREWORD SECTION 1 GENERAL Group 1 Safety Group 2 Specifications 1. Major Component 2. Specifications 3. Working Range 4. Weight 5. Lifting Capacities 6. Bucket Selection Guide 7. Undercarriage 8. Specifications For Major Components 9. Recommended Oils SECTION 2 STRUCTURE AND FUNCTION Group 1 Hydraulic Pump 1.
  • Page 3 1. Suction And Delivery Circuit 2. Return Circuit 3. Drain Circuit Group 3 Pilot Circuit 1. Suction, Delivery And Return Circuit 2. Safety Valve (safety Lever) 3. Travel Speed Control System 4. Swing Parking Brake Release Group 4 Single Operation 1.
  • Page 4 6. Wiper And Washer Circuit Group 4 Electrical Component Specification Group 5 Connectors 1. Connector Destination 2. Connection Table For Connectors SECTION 5 TROUBLESHOOTING Group 1 Before Troubleshooting 1. Introduction 2. Diagnosing Procedure Group 2 Hydraulic And Mechanical System 1. Introduction 2.
  • Page 5 3. Swing Device 4. Travel Device 5. Turning Joint 6. Cylinder Group 3 Track And Work Equipment 1. Track 2. Work Equipment SECTION 7 DISASSEMBLY AND ASSEMBLY Group 1 Precautions 1. Removal Work 2. Install Work 3. Completing Work Group 2 Tightening Torque 1.
  • Page 6 2. Disassembly And Assembly Group 9 Boom, Arm And Bucket Cylinders 1. Removal And Install 2. Disassembly And Assembly Group 10 Undercarriage 1. Track Link 2. Carrier Roller 3. Track Roller 4. Idler And Recoil Spring Group 11 Work Equipment 1.

  • Page 7: Foreword

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  • Page 15: Section 1 General

    SECTION 1 GENERAL SECTION 1 GENERAL Group 1 Safety Hints ---------------------------------------------------------------------------------------------------- 1-1 Group 2 Specifications ------------------------------------------------------------------------------------------------- 1-9...

  • Page 16: Group 1 Safety

    SECTION 1 GENERAL SECTION 1 GENERAL GROUP 1 SAFETY GROUP 1 SAFETY FOLLOW SAFE PROCEDURE FOLLOW SAFE PROCEDURE Unsafe wor k practices are dangerous. Understand service procedure before doing work; Do not attempt shortcuts. WEAR PROTECTIVE CLOTHING WEAR PROTECTIVE CLOTHING Wear close fitting clothing and safety equipment appropriate to the job.
  • Page 17 PREPARE FOR EMERGENCIES PREPARE FOR EMERGENCIES Be prepared if a fire starts. Keep a first aid kit and fire extinguisher handy. Keep emergency numbers for doctors, ambulance ser vice, hospital, and fire department near your telephone. 13031GE04 PROTECT AGAINST FLYING DEBRIS PROTECT AGAINST FLYING DEBRIS Guard against injury from flying pieces of metal or debris;...
  • Page 18 KEEP RIDERS OFF EXCAVATOR KEEP RIDERS OFF EXCAVATOR Only allow the operator on the excavator. Keep riders off. Riders on excavator are subject to injury such as being struck by foreign objects and being thrown off the excavator. Riders also obstruct the operator's view resulting in the excavator being operated in an unsafe manner.
  • Page 19 SUPPORT MACHINE PROPERLY SUPPORT MACHINE PROPERLY Always lower the attachment or implement to the ground before you work on the machine. If you must work on a lifted machine or attachment, securely support the machine or attachment. Do not support the machine on cinder blocks, hollow tiles, or props that may crumble under continuous load.
  • Page 20 BEWARE OF EXHAUST FUMES BEWARE OF EXHAUST FUMES Prevent asphyxiation. Engine exhaust fumes can cause sickness or death. If you must operate in a building, be positive there is adequate ventilation. Either use an exhaust pipe extension to remove the exhaust fumes or open doors and windows to bring enough outside air into the area.
  • Page 21 SERVICE MACHINE SAFELY SERVICE MACHINE SAFELY Tie long hair behind your head. Do not wear a necktie, scarf, loose clothing or necklace when you work near machine tools or moving parts. If these items were to get caught, severe injury could result.
  • Page 22 AVOID HEATING NEAR PRESSURIZED AVOID HEATING NEAR PRESSURIZED FLUID LINES FLUID LINES Flammable spray can be generated by heating near pressurized fluid lines, resulting in severe burns to yourself and bystanders. Do not heat by welding, soldering, or using a torch near pressurized fluid lines or other flammable materials.
  • Page 23 USE TOOLS PROPERLY USE TOOLS PROPERLY Use tools appropriate to the work. Makeshift tools, parts, and procedures can create safety hazards. Use power tools only to loosen threaded tools and fasteners. For loosening and tightening hardware, use the c o r r e c t s i ze t o o l s. D O N OT u s e U. S. measurement tools on metric fasteners.

  • Page 24: Group 2 Specifications

    GROUP 2 SPECIFICATIONS GROUP 2 SPECIFICATIONS 1. MAJOR COMPONENT 1. MAJOR COMPONENT Main pump Engine Radiator Oil cooler Swing motor Hydraulic tank Fuel tank Turning joint Main control valve Tooth Bucket Arm cylinder Boom Boom cylinder Swing post Muffler Counterweight Travel motor Sprocket Idler...

  • Page 25: Specifications

    2. SPECIFICATIONS 2. SPECIFICATIONS 3.4 m m (11' 2") MONO BOOM, 1.67 (11' 2") MONO BOOM, 1.67 m m (5' 6") ARM (5' 6") ARM WITH BOOM SWING SYSTEM WITH BOOM SWING SYSTEM 1) 1) I(I') B(L) 80CR92SP02 Description Unit Specification Operating weight kg (lb)

  • Page 26: Working Range

    3. WORKING RANGE 3. WORKING RANGE 3.4 m (11' 2") MONO BOOM (11' 2") MONO BOOM 1) 1) 80CR92SP03 Description 1.67 m (5' 6") Arm Max digging reach 6960 mm (22'10") Max digging reach on ground 6820 mm (22' 5") Max digging depth 4140 mm (13' 7") Max digging depth (8ft level)

  • Page 27: Weight

    4. WEIGHT Item Upperstructure assembly 4090 9020 Main frame weld assembly 1590 Engine assembly Main pump assembly Main control valve assembly Swing motor assembly Hydraulic oil tank assembly Fuel tank assembly Boom swing post Counterweight 2050 Cab assembly Lower chassis assembly 2940 6480 Track frame weld assembly...

  • Page 28: Lifting Capacities

    5. LIFTING CAPACITIES 5. LIFTING CAPACITIES 3.4 m (11' 2") boom, 1.67m (5' 6") arm equipped with 0.28 m (SAE heaped) bucket and 450 mm (18") triple grouser shoe and dozer blade up with 930 kg (2050 lb) counterweight. Load radius At max.

  • Page 29: Bucket Selection Guide

    6. BUCKET SELECTION GUIDE 6. BUCKET SELECTION GUIDE GENERAL BUCKET GENERAL BUCKET 1) 1) 0.28 m SAE heaped bucket Recommendation Capacity Width 3.4 m (11' 2") Weight Mono boom 1.67 m arm CECE Without With heaped heaped side cutter side cutter (5' 6") Applicable for materials with density of 1600 kg/m 730 mm...

  • Page 30: Undercarriage

    7. UNDERCARRIAGE 7. UNDERCARRIAGE 1) 1) TRACKS TRACKS X-leg type center frame is integrally welded with reinforced box-section track frames. The design includes dry tracks, lubricated rollers, idlers, sprockets, hydraulic track adjusters with shock absorbing springs and assembled track-type tractor shoes with triple grousers. 2) 2) TYPES OF SHOES TYPES OF SHOES...

  • Page 31: Specifications For Major Components

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