Komatsu 4D92E, 4D94LE, 4D98E Diesel Engine Shop Manual 4D94E-BE4

Description

• Model List:
  • 4D92E Diesel Engine
  • 4D94LE Diesel Engine
  • 4D98E Diesel Engine

• 1.1. CONTENTS
• 1.2. GENERAL
• 1.2.1. Specifications
• 1.2.2. Fuel oil, lubricating oil and cooling water
• 1.2.3. Engine performance curve
• 1.2.4. Engine external views
• 1.2.5. Structural description
• 1.2.6. How to read this manual
• 1.2.7. Precautions for service work
• 1.2.8. Tightening torques for standard bolts and nuts
• 1.3. TROUBLESHOOTING
• 1.3.1. Quick reference table for troubleshooting
• 1.3.2. Troubleshooting by measuring compression pressure
• 1.4. INSPECTION AND ADJUSTMENT
• 1.4.1. Inspecting water leak from cooling water system and radiator
• 1.4.2. Fan belt tension inspection and adjustment
• 1.4.3. Adjusting the valve clearance
• 1.4.4. Testing injection pressure and spraying condition of fuelinjection nozzle
• 1.4.5. Testing and adjusting fuel injection timing mark
• 1.4.6. Adjusting noload engine speed
• 1.4.7. Sensor inspection
• 1.4.8. Battery inspection
• 1.4.9. Adjusting operation
• 1.4.10. Long storage
• 1.4.11. Periodic maintenance schedule
• 1.5. ENGINE BODY
• 1.5.1. Introduction
• 1.5.2. Cylinder head
• 1.5.3. Gear train and camshaft
• 1.5.4. Cylinder block
• 1.6. LUBRICATION SYSTEM
• 1.6.1. Lubrication system diagram
• 1.6.2. Trochoid pump components
• 1.6.3. Disassembly (reverse the procedure below for assembly)
• 1.6.4. Servicing points
• 1.6.5. Parts inspection and measurement
• 1.7. COOLING SYSTEM
• 1.7.1. Cooling water system
• 1.7.2. Cooling water pump components
• 1.7.3. Disassembly (reverse the procedure below for assembly)
• 1.7.4. Servicing points
• 1.8. FUEL INJECTION PUMP, GOVERNOR
• 1.8.1. Specifications
• 1.8.2. Component parts
• 1.8.3. Fuel injection pump system diagram
• 1.8.4. Removal and installation of fuel injection pump
• 1.8.5. Fuel system
• 1.8.6. Structure and operation of pump
• 1.8.7. Operation of plunger
• 1.8.8. All speed governor
• 1.8.9. Structure and operation of timer
• 1.8.10. Magnet valve
• 1.8.11. Improvement of startability at very low temperature
• 1.9. STARTING MOTOR
• 1.9.1. Specifications
• 1.9.2. Components
• 1.9.3. Troubleshooting
• 1.9.4. Names of parts and disassembly procedure
• 1.9.5. Inspection and maintenance
• 1.9.6. Service standards
• 1.9.7. Assembly
• 1.9.8. Characteristic test
• 1.10. ALTERNATOR
• 1.10.1. Specifications
• 1.10.2. Sectional view
• 1.10.3. Troubleshooting
• 1.10.4. Parts names and disassembly procedure
• 1.10.5. Inspection and overhaul
• 1.10.6. Assembly
• 1.10.7. Service standards
• 1.10.8. Performance test
• 1.11. SPECIAL SERVICE TOOLS
• 1.11.1. Special tools
• 1.11.2. Measuring instruments
• 1.12. SERVICE STANDARDS
• 1.12.1. Engine tuning
• 1.12.2. Engine body
• 1.12.3. Lubricating oil system (trochoid pump)
• 1.12.4. Tightening torques for main parts
• 1.13. BACK COVER