Yanmar ViO33-7, ViO38-7 Excavator Service Manual

Description

• Model List:
  • ViO33-7, ViO38-7 Excavator

• 1. FOREWORD
• 2. CONTENTS
• 3. CHAPTER 1 – GENERAL CAUTIONS FOR MAINTENANCE WORK
• 3.1. Correct Work
• 3.2. Safety Precautions
• 3.3. Preparations
• 3.4. Cautions for Disassembly and Reassembly
• 3.5. Cautions for Removal and Installation of Hydraulic Equipment
• 3.6. Cautions for Removal and Installation of Hydraulic Piping
• 3.7. Cautions for Handling Seals
• 3.8. Correct Installation of Hydraulic Hose
• 3.9. Specifications of Hydraulic Hose
• 3.10. Air Release of Hydraulic Equipment
• 4. CHAPTER 2 – TECHNICAL DATA
• 4.1. Specifications
• 4.2. Outline Drawing and Working Area
• 4.3. Weight List of Main Parts
• 4.4. Lifting Capacity List
• 4.5. Specifications for Attachment
• 4.6. Periodic Inspection and Servicing
• 4.7. Fluids and Greases Recommended
• 4.8. Hydraulic Circuit Schematic
• 4.8.1. ViO33-7
• 4.8.2. ViO38-7
• 4.9. Wiring Diagram
• 5. CHAPTER 3 – SERVICE STANDARDS
• 5.1. Machine Performance
• 5.2. Engine
• 5.3. Undercarriage
• 5.3.1. Rubber Crawler Specifications
• 5.3.2. Steel Crawler Specifications
• 5.3.3. Common Specifications of Steel Rubber Crawlers
• 5.4. Controls
• 5.5. Hydraulic Equipment
• 5.5.1. Hydraulic Cylinders
• 5.6. Implement
• 5.6.1. Front Attachments
• 5.6.2. Blade Moving Device
• 5.7. List of Tightening Torque
• 5.7.1. Special management parts for main machine
• 5.7.2. Engine
• 5.7.3. Tightening Torque for General Bolts and Nuts
• 5.7.4. Hydraulic Fitting
• 5.8. Pressure Adjustment
• 5.8.1. Relief Valves
• 5.8.2. Swing Brake Valve
• 5.8.3. Cut-Off Valve
• 6. CHAPTER 4 – ENGINE
• 7. CHAPTER 5 – ELECTRIC SYSTEM
• 7.1. Electric Equipment of Machine
• 7.1.1. Parts Layout of Electrical Equipment
• 7.1.2. LCD Monitor and Alarm Systems
• 7.2. Circuit Description of Engine Start and Stop
• 7.3. Engine ECU (engine controller)
• 7.3.1. Outline
• 7.4. Hydraulic ECU (Pump Controller)
• 7.4.1. Auto deceleration mode
• 7.4.2. Eco mode
• 7.4.3. Speed Sensing Horsepower Limit Control
• 7.5. Battery
• 7.5.1. Generality
• 7.5.2. Maintenance
• 7.6. Error Code
• 8. CHAPTER 6 – HYDRAULIC SYSTEM
• 8.1. Overview
• 8.1.1. Control Valve Operation
• 8.1.2. Additional Operation of Control Valve
• 8.2. Circuit Operation
• 8.2.1. Boom
• 8.2.2. Arm
• 8.2.3. Bucket
• 8.2.4. Swivel
• 8.2.5. Boom Swing
• 8.2.6. Blade
• 8.2.7. Travel
• 8.2.8. Non-Deviation Travel (with Boom, Arm or Boom Swing Operation)
• 8.2.9. Non-Deviation Travel (with Bucket Operation)
• 8.2.10. Simultaneous Operation of Boom Raise and ArmIn
• 8.2.11. Simultaneous Operation of Boom Raise and Bucket
• 8.2.12. Simultaneous Operation of Boom Raise and Swivel
• 8.2.13. Simultaneous Operation of Arm and Bucket
• 8.2.14. Hydraulic AUX (Option)
• 8.2.15. Quick Coupler (Quick Coupler Spec.)
• 8.2.16. Travel Alarm
• 8.2.17. Auto Deceleration
• 8.3. Hydraulic Pump
• 8.4. Control Valve
• 8.5. Pilot Valve
• 8.5.1. Remote Control Valve
• 8.6. Boom Swing Pilot Valve
• 8.7. Swivel Motor
• 8.8. Travel motor
• 8.8.1. ViO33-7
• 8.8.2. ViO38-7
• 8.9. Proportional Solenoid Valve (ESS)
• 8.10. Proportional solenoid valve (AUX)
• 9. CHAPTER 7 – ADJUSTMENT AND REPAIR
• 9.1. Bonnet Weight
• 9.1.1. Removal and Reinstallation of Bonnet
• 9.1.2. Removal and Reinstallation of Counter Weight
• 9.2. Engine and Electrical Equipment
• 9.2.1. Removal and Reinstallation of Engine
• 9.2.2. Removal and Reinstallation of Starter Motor
• 9.2.3. Removal and Reinstallation of Radiator and Oil Cooler
• 9.2.4. Removal and Reinstallation of Fan Belt and Compressor Belt
• 9.2.5. Removal and Reinstallation of Engine ECU
• 9.2.6. Removal and Reinstallation of Hydraulic ECU
• 9.2.7. Removal and Reinstallation of Fuel Tank
• 9.3. Undercarriage
• 9.3.1. Outline
• 9.3.2. Main Parts
• 9.3.3. Points of Reassembly (Rubber Track)
• 9.3.4. Points of Reassembly (Steel Track)
• 9.3.5. Removal and Reinstallation of Crawlers
• 9.3.6. Removal and Reinstallation of Travel Motor
• 9.3.7. Disassembly and Reassembly of Idler
• 9.3.8. Disassembly and Reassembly of Track Roller
• 9.3.9. Disassembly and Reassembly of Carrier Roller
• 9.3.10. Installation of Floating Seal
• 9.4. Controls
• 9.4.1. Operation lever
• 9.4.2. Travel Levers
• 9.5. Swivel Bearing
• 9.6. Hydraulic Equipment
• 9.6.1. Removal and Reinstallation of Hydraulic Pump
• 9.6.2. Removal and Reinstallation of Control Valve
• 9.6.3. Removal and Reinstallation of Pilot Valves (L and R)
• 9.6.4. Removal and Reinstallation of AUX solenoid valve (AUX2 specification)
• 9.6.5. Removal and Reinstallation of ESS Proportional Valve
• 9.6.6. Removal and Reinstallation of Swivel Motor
• 9.6.7. Removal and Reinstallation of Swivel Joint
• 9.6.8. Disassembly and Reassembly of Swivel Joint
• 9.6.9. Disassembly and Reassembly of Hydraulic Cylinder
• 9.6.10. Hydraulic Oil tank
• 9.6.11. Hydraulic piping diagram
• 9.7. Work Implements
• 9.7.1. Removal and Reinstallation of Work Implements
• 9.8. Cabin
• 9.8.1. Removal and Reinstallation of Cabin
• 9.8.2. Disassembly and Reassembly of Cabin
• 9.9. Air Conditioner/Heater
• 9.9.1. Removal and Reinstallation of Air Conditioner/Heater
• 10. CHAPTER 8 – TROUBLESHOOTING
• 10.1. Non-breakdowns
• 10.1.1. Natural Release of Bucket
• 10.1.2. Discontinuous Arm Movement
• 10.1.3. Drifting of Upperstructure on Quick Travel Operation
• 10.1.4. Thermal Shock of Travel Motor
• 10.1.5. Elongation of Boom Swing Cylinder on 65 degrees Swing
• 10.1.6. Telescopic Motion of Boom Swing Cylinder with Lock Lever Set to Lock Position
• 10.1.7. Time Lag on Travel Speed Switching
• 10.1.8. Brake Sound from the Travel Motor
• 10.1.9. Fluctuation in Oil Level of Hydraulic Oil Tank Due to Temperature Change
• 10.2. Quick Reference Table for Troubleshooting
• 11. APPENDIX
• 12. END PAGE