Yanmar B22-2, B22-2A Excavator Service Manual

Description

• Model List:
  • B22-2, B22-2A Excavator

• 1. FOREWORD
• 2. CONTENTS
• 3. 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 Attaching and Detaching Hydraulic Equipment
• 3.6. Cautions for Attaching and Detaching Hydraulic Piping
• 3.7. Cautions for Handling Seals
• 3.8. Correct installation of Hydraulic Hose
• 3.9. Specifications of Hydraulic Hose
• 3.10. Air-Venting of hydraulic Equipment
• 4. TECHNICAL DATA
• 4.1. Specifications
• 4.2. External Drawing and Working Ranges
• 4.2.1. Canopy Type Specifications
• 4.2.2. Cabin Type Specifications
• 4.3. Weight of Main Parts
• 4.4. Lifting Capacities
• 5. SERVICING STANDARDS
• 5.1. Machine Performance
• 5.2. Engine
• 5.3. Unsercarriage
• 5.3.1. Rubber Track Specifications
• 5.3.2. Steel Track Specifications
• 5.3.3. Steel Rubber Track Common Specifications
• 5.4. Control Devices
• 5.5. Hydraulic Equipment
• 5.5.1. Hydraulic Cylinder
• 5.6. Work Implement
• 5.6.1. Front Attachment
• 5.6.2. Dozer Moving Device
• 5.6.3. Bucket Teeth
• 5.7. List of Tightening Torque
• 5.7.1. Machine
• 5.7.2. Engine
• 5.7.3. Tightening Toque of General Bolts and Nuts
• 6. ENGINE
• 6.1. Cylinder Block
• 6.2. Cylinder Head
• 6.3. Piston and Piston Pins
• 6.4. Connecting Rods
• 6.5. Crankshaft and Main Bearing Metal
• 6.6. Camshaft and Tappets
• 6.7. Timing Gear
• 6.8. Lubrication System
• 6.9. Cooling System
• 6.10. Fuel Supply System
• 6.11. Construction of Governor
• 6.12. Electrical Equipment
• 6.13. Alarm Device
• 7. HYDRAULIC SYSTEM
• 7.1. Outline
• 7.1.1. Function of Control Valve
• 7.2. Hydraulic Circuit Schematic
• 7.3. Operationg Circuit
• 7.3.1. Boom
• 7.3.2. Arm
• 7.3.3. Bucket
• 7.3.4. Swing
• 7.3.5. Boom Swing
• 7.3.6. Dozer
• 7.3.7. Traveling
• 7.3.8. Simultaneous Operation of Arm and Boom Swing
• 7.3.9. Hydraulic P.T.O.
• 7.4. Hydraulic System
• 7.4.1. Hydraulic Pump
• 7.5. Cut-offValve
• 7.6. Pilot Valve
• 7.7. Control Valve
• 7.7.1. Operation Principle
• 7.8. Swing Motor
• 7.9. Travel Motor
• 7.10. PTO Selector Valve(for Merging with Hydraulic PTO)
• 7.11. Pressure Adjustment
• 7.11.1. Relief Valve
• 7.11.2. Swing Brake Valve
• 7.11.3. Cutt-off Valve
• 8. ADJUSTMENT PROCEDURES FOR EACH EQUIPMENT
• 8.1. Electrical Equipment of the Machine
• 8.1.1. Arrangement of Electrical Equipment and Names of parts
• 8.1.2. Monitor and Alarm Systems
• 8.1.3. Wiring Diagram
• 8.2. Undercarriage
• 8.2.1. Outline
• 8.2.2. Major Parts
• 8.2.3. Cautions for Reassembly (Rubber Track Models)
• 8.2.4. Cautions for Reassembly (Steel Track Models)
• 8.2.5. Disassembly and Reassembly of Idler
• 8.2.6. Assembly of Idler
• 8.2.7. Assembly of Track Adjuster
• 8.2.8. Disassembly and Reassembly of Track Roller
• 8.2.9. Drawing of Jigs
• 8.3. Controls
• 8.3.1. Control Train
• 8.3.2. Disassembly and Reassembly of Mechanical Control Linkage
• 8.3.3. Adjustment of Lock Lever
• 8.3.4. Adjustment of Implements and Swing Control levers (for Semi-long lever type only
• 8.3.5. adjustment of travel Levers
• 8.3.6. Adjustment of 2-Speed Pedal
• 8.3.7. Adjustment of Boom Swing Pedal
• 8.3.8. Adjustment of Dozer Lever
• 8.3.9. Adjustment of Engine Speed Control
• 8.4. Swing System
• 8.4.1. Swing Bearing
• 8.5. Hydraulic Equipment
• 8.5.1. Remove and Install Hydraulic Pump
• 8.5.2. Disassembly and Reassembly of Hydraulic Cylinder
• 8.5.3. Swivel Joint
• 8.5.4. Reservoir
• 8.5.5. Hydraulic Piping Layout
• 8.6. Cabin
• 8.6.1. Removal and Installation of Cabin
• 8.6.2. Installation of Defroster
• 9. PERIODIC INSPECTION
• 9.1. List of Periodic Inspection and Servicing
• 10. FUEL,LUBE OIL AND GREASE RECOMMENDED
• 10.1. Fuel,Lube Oil and Grease Recommended by Yanmar
• 11. TROUBLESHOOTING
• 11.1. Non-breakdowns
• 11.1.1. Natural Release of Bucket
• 11.1.2. Discontinuous Arm Movement
• 11.1.3. Drifting of Upperstructure Quick Travel Operation
• 11.1.4. Thermal Shock of Travel Motor
• 11.1.5. Elongation of Boom Swing Cylinder on 90Swing
• 11.1.6. Time Lag on Switching Travel Speed
• 11.1.7. Reservoir Oil Level Fluctuation through Temperature Change
• 11.1.8. Autmatic Return from 2nd Speed to 1st Speed during low Speed Travel Motor Operation
• 11.2. Troubleshooting
• 11.2.1. Machine and Engine
• 11.2.2. Electrical Equipment on Panel
• 12. REFERENCE DATA
• 12.1. Bucket Installtion Dimension