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 FOREWORD

 GENERAL

   1. Safety hints

   2. Specifications

 STRUCTURE AND FUNCTION

   1. Pump device

   2. Main control valve

   3. Swing device

   4. Travel motor

   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. Monitoring system

    3. Electric circuit

    4. Electrical component specification

    5. Connectors

    6. Fault codes

 TROUBLESHOOTING

   1. Before troubleshooting

   2. Hydraulic and mechanical system

   3. Electrical system

 MAINTENANCE STANDARD

   1. Operational performance test

   2. Major component

   3. Track and work equipment

 DISASSEMBLY AND ASSEMBLY

   1. Precaution

   2. Tightening torque

   3. Pump device

   4. Main control valve

   5. Swing device

   6. Travel device

   7. RCV Lever

   8. Turning joint

   9. Boom, arm and bucket cylinders

  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