FOREWORD

 GENERAL

   1. Safety hints

   2. Specifications

 STRUCTURE AND FUNCTION

   1. Pump device

   2. Main control valve

   3. Swing device

   4. Travel device

   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

 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. Pump device

   4. Main control valver

   5. Swing device

   6. Travel device

   7. RCV lever

   8. Turning joint

   9. Boom, arm, bucket and dozer cylinders

  10. Undercarriage

  11. Work equipment