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

 HYDRAULIC SYSTEM

    1. Hydraulic circuit

    2. Main circuit

    3. Pilot circuit

 ELECTRICAL SYSTEM

    1. Component location

    2. Monitoring system

    3. Electric circuit

    4. Electrical component specification

    5. 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. Swing device

   4. Travel motor

   5. Gear box

   6. Steering valve

   7. Axle

   8. RCV Lever

   9. Turning joint

  10. Boom, arm and bucket cylinders

  11. Work equipment