Yanmar B7-5B Excavator Service Manual

Description

• Model List:
  • B7-5B Excavator

• 1. General Cautions for Maintenance Work
• 1.1. Correct Work
• 1.2. Safety Precautions
• 1.3. Preparations
• 1.4. Cautions for Disassembly and Reassembly
• 1.5. Cautions for Removal and Installation of Hydraulic Equipment
• 1.6. Cautions for Removal and Installation of Hydraulic Piping
• 1.7. Cautions for Handling Seals
• 1.8. Correct Installation of Hydraulic Hose
• 1.9. Specifications of Hydraulic Hose
• 1.10. Air Release of Hydraulic Equipment
• 2. Technical Data
• 2.1. Specifications
• 2.1.1. Machine Body
• 2.1.2. Engine
• 2.2. Outline Drawing and Working Area
• 2.3. Weight List of Main Parts
• 2.4. Lifting Capacity List
• 3. Service Standards
• 3.1. Machine Performance
• 3.2. Engine
• 3.3. Undercarriage
• 3.3.1. Rubber Crawler Specifications
• 3.3.2. Steel Crawler Specifications
• 3.3.3. Common Specifications of Steel Rubber Crawlers
• 3.4. Controls
• 3.5. Hydraulic Equipment
• 3.5.1. Hydraulic Cylinders
• 3.6. Implement
• 3.6.1. Front Attachments
• 3.6.2. Blade Moving Device
• 3.6.3. Bucket Teeth
• 3.7. List of Tightening Torque
• 3.7.1. Machine
• 3.7.2. Engine
• 3.7.3. Tightening Torque for General Bolts and Nuts
• 4. Engine
• 4.1. Engine
• 4.1.1. Safety Precautions
• 4.1.2. Introduction
• 4.1.3. Special Service Tools
• 4.1.4. Measuring Instruments
• 4.1.5. Cylinder Head
• 4.1.6. Measuring and Adjusting Valve Clearance
• 4.1.7. Crankshaft and Camshaft Components
• 4.1.8. EGR System
• 4.2. Fuel System
• 4.2.1. Before You Begin Servicing
• 4.2.2. Introduction
• 4.2.3. Special Service Tools
• 4.2.4. Measuring Instruments
• 4.2.5. Fuel System Diagram
• 4.2.6. Fuel System Components
• 4.2.7. Fuel Injection Pump
• 4.2.8. Checking and Adjusting Fuel Injection Timing
• 4.2.9. Fuel Injectors
• 4.3. Cooling System
• 4.3.1. Before You Begin Servicing
• 4.3.2. Introduction
• 4.3.3. Cooling System Diagram
• 4.3.4. Engine Coolant Pump Components
• 4.3.5. Engine Coolant System Check
• 4.3.6. Engine Coolant Pump
• 4.4. Lubrication System
• 4.4.1. Before You Begin Servicing
• 4.4.2. Introduction
• 4.4.3. Lubrication System Diagram
• 4.4.4. Checking Engine Oil Pressure
• 4.4.5. Trochoid Oil Pump
• 4.5. Starter Motor
• 4.5.1. Before You Begin Servicing
• 4.5.2. Introduction
• 4.5.3. Starter Motor Specifications
• 4.5.4. Starter Motor Troubleshooting
• 4.5.5. Starter Motor Components
• 4.5.6. Starter Motor
• 4.6. Alternator
• 4.6.1. Before You Begin Servicing
• 4.6.2. Introduction
• 4.6.3. Alternator Specifications
• 4.6.4. Alternator Troubleshooting
• 4.6.5. Alternator Components
• 4.6.6. Alternator Wiring Diagram
• 4.6.7. Alternator Standard Output
• 4.6.8. Alternator
• 4.7. Electronic Control System
• 4.7.1. Engines Available with the Electronic Control System
• 4.7.2. Before You Begin Servicing
• 4.7.3. Introduction
• 4.7.4. Electronic Control System
• 4.7.5. Main Electronic Control Components and Features
• 4.8. Electric Wiring
• 4.8.1. Electric Wiring Precautions
• 4.9. Failure Diagnosis
• 4.9.1. Special Service Tools
• 4.9.2. Troubleshooting By Measuring Compression Pressure
• 4.9.3. Measured Value and Troubleshooting
• 4.9.4. Quick Reference Table For Troubleshooting
• 5. Hydraulic System
• 5.1. Outline
• 5.1.1. Control Valve Operation
• 5.1.2. Additional Operation of Control Valve
• 5.2. Hydraulic Circuit Schematic
• 5.3. Circuit Operation
• 5.3.1. Boom
• 5.3.2. Arm
• 5.3.3. Bucket
• 5.3.4. Swing
• 5.3.5. Boom Offset
• 5.3.6. Blade
• 5.3.7. Travel
• 5.3.8. Simultaneous Operation of Travel and Boom / Bucket
• 5.3.9. Simultaneous Operation of Travel and Arm / Boom Offset
• 5.3.10. Simultaneous Operation of Boom Up and Arm Retract
• 5.3.11. Simultaneous Operation of Boom Up and Bucket
• 5.3.12. Simultaneous Operation of Boom Up and Swing
• 5.3.13. Hydraulic P.T.O.
• 5.4. Pressure Adjustment
• 5.4.1. Relief Valves
• 5.4.2. Swing Brake Valve
• 5.4.3. Cut-off Valve
• 6. Hydraulic Equipment
• 6.1. Hydraulic Pump
• 6.2. Control Valve
• 6.3. Pilot Valve
• 6.4. Swing Motor
• 6.4.1. Overview
• 6.4.2. Description of Functions and Operation
• 6.4.3. Precautions for Handling
• 6.4.4. Troubleshooting
• 6.4.5. Employment Tool
• 6.4.6. Disassembly Procedure
• 6.4.7. Assembly Procedure
• 6.4.8. Quality Check After Reassembly
• 6.5. Travel Motor
• 6.5.1. Travel Motor (Reduction Gear Structure RV System)
• 6.5.2. Travel Motor (Reduction Gear Structure Two-stage Planetary Gear System)
• 7. Adjustment and Repair
• 7.1. Electric Equipment of the Machine
• 7.1.1. Parts Layout of Electrical Equipment
• 7.1.2. Monitor and Alarm Systems
• 7.1.3. Wiring Diagram
• 7.1.4. Circuit Description of Engine Start, Stop and Battery Charging
• 7.1.5. Removal and Reinstallation of Engine
• 7.1.6. Removal and Reassembly of Starter Motor
• 7.1.7. Removal and Reinstallation of Fuel Injection Pump
• 7.1.8. Removal and Reinstallation of ECU
• 7.2. Undercarriage
• 7.2.1. Outline
• 7.2.2. Compatibility of Main Parts
• 7.2.3. Points of Reassembly (Rubber Crawler Type)
• 7.2.4. Points of Reassembly (Steel Crawler Type)
• 7.2.5. Disassembly and Reassembly of Steel Crawler
• 7.2.6. Disassembly and Reassembly of Idler
• 7.2.7. Disassembly and Reassembly of Track Roller
• 7.2.8. Disassembly and Reassembly of Carrier Roller
• 7.2.9. Installation of Floating Seal
• 7.2.10. Drawings of Jigs
• 7.3. Controls
• 7.3.1. Control Train
• 7.3.2. Mechanical Control Linkage
• 7.3.3. Adjustment of Implement Control Levers
• 7.3.4. Adjustment of Travel Levers
• 7.3.5. Adjustment of Boom Offset Pedal
• 7.3.6. Adjustment of Blade Control Lever
• 7.3.7. Adjustment of Lock Lever
• 7.3.8. Adjustment Procedure of P.T.O. Pedal
• 7.3.9. Adjustment Procedure of P.T.O. Pedal Lock
• 7.3.10. Adjustment of Accelerator Lever
• 7.4. Swing Bearing
• 7.5. Hydraulic Equipment
• 7.5.1. Removal and Reinstallation of Hydraulic Pump
• 7.5.2. Removal and Reinstallation of Control Valve
• 7.5.3. Removal and Reinstallation of Swing Motor
• 7.5.4. Removal and Reinstallation of Swivel Joint
• 7.5.5. Disassembly and Reassembly of Swivel Joint
• 7.5.6. Disassembly and Reassembly of Hydraulic Cylinder
• 7.5.7. Hydraulic Oil Tank
• 7.5.8. Piping Layout
• 7.6. Work Implements
• 7.6.1. Removal and Reinstallation of Work Implements
• 8. Periodic Inspection and Servicing
• 8.1. List of Periodic Inspection and Servicing
• 9. Fuel, Lube Oil and Grease Recommended
• 10. Troubleshooting
• 10.1. Non-breakdowns
• 10.1.1. Natural Release of Bucket
• 10.1.2. Discontinuous Arm Movement
• 10.1.3. Extension or retraction of Boom Offset Cylinder when Excavating
• 10.1.4. Thermal Shock of Travel Motor
• 10.1.5. Time Lag on Travel Speed Switching
• 10.1.6. Fluctuation in Oil Level of Hydraulic Oil Tank due to Temperature Change
• 10.2. Troubleshooting
• 10.2.1. Machine and Engine
• 10.2.2. Electrical Equipment on Panel
• 11. Reference Data
• 11.1. Specifications for Attachment
• 11.2. Standard Bucket Specifications