Yanmar C12R (3WD) Excavator Service Manual

Description

• Model List:
  • C12R (3WD) Excavator

• 1. FOREWORD
• 2. CONTENTS
• 3. CHAPTER 1 GENERAL CAUTIONS FOR MAINTENANCE WORK
• 3.1. General Cautions for Maintenance Work
• 3.1.1. Correct Work
• 3.1.2. Safety Precautions
• 3.1.3. Preparations
• 3.1.4. Cautions for Disassembly and Reassembly
• 3.1.5. Cautions for Removal and Installation of Hydraulic Equipment
• 3.1.6. Cautions for Removal and Installation of Hydraulic Piping
• 3.1.7. Cautions for Handling Seals
• 3.1.8. Correct Installation of Hydraulic Hose
• 3.1.9. Specifications of Hydraulic Hose
• 3.1.10. Air Release Procedure for H.S.T. System
• 4. CHAPTER 2 TECHNICAL DATA
• 4.1. Technical Data
• 4.1.1. Specifications
• 4.1.2. Machine Dimensions
• 4.1.3. Hydraulic Circuit Schematic
• 4.1.4. Wiring Diagram
• 4.1.5. Weight of Components
• 5. CHAPTER 3 SERVICE STANDARDS
• 5.1. Service Standards
• 5.1.1. Machine Performance
• 5.1.2. Engine
• 5.1.3. Undercarriage
• 5.1.4. Control Devices
• 5.1.5. Hydraulic Cylinder
• 5.1.6. Work Implement
• 5.1.7. List of Tightening Torque
• 5.1.7.1. Machine
• 6. CHAPTER 4 ENGINE
• 6.1. Engine
• 6.1.1. Measurement, Inspection and Adjustment
• 6.1.1.1. Measuring the Compression Pressure
• 6.1.1.2. Adjusting the Valve Clearance
• 6.1.1.3. Checking the V-belt Tension
• 6.1.1.4. Checking the Fuel Injection Valve
• 6.1.1.5. Checking and Adjusting the Fuel Injection Timing
• 6.1.1.6. Adjusting the Maximum (or Minimum) Idling Speed
• 6.1.1.7. Checking the Cooling Water System and Radiator for Water Leakage
• 6.1.1.8. Checking the Sensors
• 6.1.2. Measurement Procedure, Service Data and Corrective Action
• 6.1.2.1. Cylinder Head
• 6.1.2.2. Cylinder Block
• 6.1.2.3. Valve Rocker Arm
• 6.1.2.4. Piston and Piston Rings
• 6.1.2.5. Connecting Rod
• 6.1.2.6. Cam Shaft
• 6.1.2.7. Crank Shaft
• 6.1.2.8. Gears
• 6.1.2.9. Trochoid Pump
• 6.1.3. Precautions for Reassembly
• 6.1.4. Fuel Injection System
• 6.1.4.1. Fuel Injection Pump
• 6.1.4.2. Fuel Injection Valve
• 6.1.4.3. Governor Mechanism
• 6.1.4.4. Specifications of Fuel Injection Pump
• 6.1.5. Electrical Equipment
• 6.1.5.1. Starter Motor
• 6.1.5.2. Alternator
• 6.1.5.3. Glow Plug
• 7. CHAPTER 5 STRUCTURE AND OPERATION
• 7.1. Structure and Operation
• 7.1.1. Component Parts
• 7.1.2. Mechanical Diagram of Power Transmission
• 7.1.3. Power Transmission
• 7.1.3.1. Outline of H.S.T.
• 7.1.3.2. Features of H.S.T.
• 7.1.4. Pulley and Velt
• 7.1.5. Transmission Case
• 7.1.5.1. Transmission Shaft and Gear
• 7.1.5.2. Side Clutch Hoke and Steering Brake
• 7.1.6. Track Frame
• 7.1.7. Idler and Track Roller
• 7.1.7.1. Idler, Track Roller and Carrier Roller
• 7.1.8. Hydraulic Equipment Layout
• 8. CHAPTER 6 HYDRAULIC EQUIPMENT
• 8.1. Hydraulic Equipment
• 8.1.1. Outline
• 8.1.2.
• 8.1.3. Control Valve
• 8.1.4. Pressure Measurement Procedure
• 8.1.4.1.
• 8.1.4.2. Control Valve
• 9. CHAPTER 7 STRUCTURE AND OPERATION
• 9.1. Structure and Operation
• 9.1.1. Electrical Equipment of Machine
• 9.1.1.1. Parts Layout of Electrical Equipment
• 9.1.1.2. Monitor and Alarm Systems
• 9.1.1.3. Wiring Diagram
• 9.1.1.4. Circuit Description of Engine Start and Stop
• 9.1.1.5. Circuit Description of Battery Charging
• 9.1.2. Undercarriage
• 9.1.2.1. Remove and Installation of Rubber Crawler
• 9.1.2.2. Inspection and Adjustment of Rubber Crawler
• 9.1.2.3. Disassembly and Reassembly of Idler
• 9.1.2.4. Disassembly and Reassembly of Track Roller (Carrier Roller)
• 9.1.3. Control Equipment
• 9.1.3.1. Structure and Comportment Parts
• 9.1.3.2. Inspection and Adjustment of Travel Pedal
• 9.1.3.3. Checking and Adjusting the Brake Pedal
• 9.1.3.4. Inspection and Adjustment of Parking Brake
• 9.1.3.5. Inspection and Adjustment of F/R Lever
• 9.1.3.6. Inspection and Adjustment of Accelerator Lever
• 9.1.3.7. Adjustment Procedure for Travel Speed Select Lever
• 9.1.4. Power Transmission
• 9.1.4.1. Removal and Reinstallation of Engine
• 9.1.4.2. Transmission
• 9.1.4.3. Replacement of Drive Belt
• 9.1.5. Hydraulic Equipment
• 9.1.5.1. Hydraulic Cylinder
• 9.1.5.2. Hydraulic Oil Tank
• 9.1.5.3. Hydraulic Piping
• 9.1.6. Wagon
• 10. CHAPTER 8 PERIODIC INSPECTION AND SERVICING
• 10.1. Periodic Inspection and Servicing
• 10.1.1. List of Periodic Inspection and Servicing
• 11. CHAPTER 9 FUEL, LUBE OIL AND GREASE RECOMMENDED
• 11.1. Fuel, Lube Oil and Grease Recommended
• 12. CHAPTER 10 TROUBLESHOOTING
• 12.1. Troubleshooting
• 12.1.1. Troubleshooting
• 12.1.1.1. Machine and Engine
• 12.1.1.2.
• 13. COLOPHON