FOREWORD

 GENERAL

   1. Safety hints

   2. Specifications

 STRUCTURE AND FUNCTION

   1. Pump device

   2. Main control valve

   3. Swing device

   4. Travel device

 HYDRAULIC SYSTEM AND ELECTRICAL SYSTEM

    1. Hydraulic circuit

    2. Monitoring system

    3. Electrical circuit

    4. Error codes

 TROUBLESHOOTING

   1. Before troubleshooting

   2. Hydraulic and mechanical system

   3. Electrical system 

 MAINTENANCE STANDARD

   1. Operational performance test

   2. Major components

   3. Track and work equipment

 DISASSEMBLY AND ASSEMBLY

   1. Precaution

   2. Tightening torque

   3. Main control valve

   4. Swing device

   5. Travel device

   6. RCV lever

   7. Turning joint

   8. Boom, arm and bucket cylinder

   9. Undercarriage

  10. Work equipment