Yanmar Marine Diesel Engine 4LHE Series Service Manual PDF

This service manual has been complied for engineers engaged in sales, service, inspection and maintanance. Accordingly, descriptions of the construction and functions of the engine are emphasized in this manual while items which should be common knowledge are omitted. One characteristic of a marine diesel engine is that its performance in a vessel is governed by the applicability of the vessel's hull construction and its steering system. Engine installation, fitting out and propeller selection have a substancial effect on the performance of the engine and the vessel. Moreover, when the engine runs unevenly or when trouble occurs, it is essential to check a wide range of operating conditions - such as installation to the hull and suitability of the ship's piping and propeller - and not just the engine itself. To get maximum performance from this engine, you should completely understand its functions, construction and capabilities, as well as proper use and servicing.
Use this manual as a handy reference in daily inspection and maintanance, and as a text for engineering guidance.
This service manual is a scanned PDF file, which includes 381 pages, which can be easly printed.
We recommend to use Adobe PDF Reader, to be sure all images / graphics will display correctly.

Models:
4LH-TE,
4LH-HTE,
4LH-DTE,
4LH-STE.

CONTENTS:

<ul class="models" "="">

• CHAPTER 1 GENERAL
  • 1. Exterior Views
  • 2. Specifications
  • 3. Service Data Sheet
  • 4. Performance Curves
  • 5. Dimensions
  • 6. Piping Diagrams
  • 7. Electrical Diagrams
• CHAPTER 2 BASIC ENGINE
  • 1. Disassembly and Reassembly Tools
  • 2. Cylinder Block
  • 3. Cylinder Liners
  • 4. Cylinder Head
  • 5. Piston and Piston Pins
  • 6. Connecting Rod
  • 7. Crankshaft and Main Bearing
  • 8. Camshaft and Tappets
  • 9. Timing Gear
  • 10. Flywheel
• CHAPTER 3 FUEL INJECTION EQUIPMENT
  • DISTRIBUTOR TYPE
  • 1. Fuel Supply System
  • 2. Bleeding and Checking Injection Timing
  • 3. Fuel Injection Pump Outline
  • 4. Fuel System
  • 5. Injection Pump Contruction and Operation
  • 6. Governor Mechanism
  • 7. Timer Construction and Operation
  • 8. Magnet Valve
  • 9. Pump Reassembly, Adjustment and Inspection
  • 10. Test Bench Adjustment of VE Pump
  • 11. Troubleshooting
  • 12. Fuel Injection Nozzle
  • 13. Fuel Filter
  • YPES-AL TYPE
  • 1. Fuel Supply System
  • 2. Disassembly, Reassembly and Inspection of Governor
  • 3. Disassembly, Reassembly and Inspection of Fuel Injection Pump
  • 4. Adjustment of Fuel Injection and Governor
  • 5. Automatic Advancing Timer
  • 6. Fuel Feed Pump
  • 7. Fuel Injection Nozzle
  • 8. Troubleshooting
  • 9. Tools
  • 10. Fuel Injection Pump Specifications
  • 11. Service Data
• CHAPTER 4 INTAKE AND EXHAUST SYSTEM
  • 1. Intake and Exhaust System
  • 2. Intake Silencer
  • 3. Intake Manifold
  • 4. Turbocharger
  • 5. Mixing Elbow
  • 6. Breather
• CHAPTER 5 LUBRICATION SYSTEM
  • 1. Lubrication System
  • 2. Lube Oil Pump
  • 3. Lube Oil Filter
  • 4. Oil Pressure Control Valve
  • 5. Lube Oil Cooler
  • 6. Piston Cooling Nozzle
  • 7. Rotary Waste Oil Pump (Optional)
• CHAPTER 6 COOLING WATER SYSTEM
  • 1. Cooling Water System
  • 2. Sea Water Pump
  • 3. Fresh Water Pump
  • 4. Heat Exchanger
  • 5. Pressure Cap and Sub Tank
  • 6. Thermostat
  • 7. Kingston Cock (Optional)
  • 8. Sea Water Filter (Optional)
  • 9. Bilge Pump and Bilge Strainer (Optional)
• CHAPTER 7 REDUCTION AND REVERSING GEAR
  • Marine gear model KM5A
  • Marine gear model HSW630A1
• CHAPTER 8 REMOTE CONTROL
  • 1. Remote Control System
  • 2. Remote Control Installation
  • 3. Remote Control Inspection
  • 4. Remote Control Adjustment
• CHAPTER 9 ELECTRICAL SYSTEM
  • 1. Electrical System
  • 2. Battery
  • 3. Starter Motor
  • 4. Alternator
  • 5. Instrument Panel
  • 6. Warning Devices
  • 7. Tachometer