EasyManua.ls Logo

Yanmar 2GM20F Service Manual

Yanmar 2GM20F
463 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image

Table of Contents

Other manuals for Yanmar 2GM20F

Question and Answer IconNeed help?

Do you have a question about the Yanmar 2GM20F and is the answer not in the manual?

Yanmar 2GM20F Specifications

General IconGeneral
Cooling SystemFreshwater cooling with heat exchanger
Fuel TypeDiesel
Combustion SystemIndirect injection
Engine TypeVertical, water-cooled 4-cycle diesel engine
Bore x Stroke75 mm x 72 mm
Starting SystemElectric start
Lubrication SystemForced lubrication

Summary

CHAPTER 1 GENERAL

1. Specifications

Detailed technical data and performance characteristics of the engine models.

2. Principal Construction

Overview of the main engine components and their build.

3. Performance Curves

Graphical representation of engine performance metrics like fuel consumption and torque.

4. Features

Key attributes and advantages of the engine models.

5. Engine Cross-Sections

Diagrams illustrating the internal layout and parts of the engine.

6. Dimensions

Physical measurements and overall size of the engine.

7. Piping Diagrams

Schematic representation of fluid and air pathways within the engine systems.

CHAPTER 2 BASIC ENGINE

1. Cylinder Block

Description and diagrams of the engine's main structural component.

2. Cylinder Head

Details and illustrations of the cylinder head assembly and its parts.

3. Piston

Information on piston design, specifications, and inspection procedures.

4. Connecting Rod

Details concerning the connecting rod's construction, inspection, and assembly.

5. Crankshaft

Information on the crankshaft's design, specifications, and maintenance.

6. Flywheel and Housing

Description of the flywheel and its housing assembly.

7. Camshaft

Details about the camshaft's construction, operation, and wear inspection.

8. Timing Gear

Information on the timing gear train mechanism and its components.

CHAPTER 3 FUEL SYSTEM

1. Fuel Injection System

Overview of the fuel delivery and injection process.

2. Injection Pump

Detailed explanation of the fuel injection pump's construction and function.

3. Injection Nozzle

Information on the fuel injector design, operation, and testing.

4. Fuel Filter

Description of the fuel filtering system and replacement procedures.

5. Fuel Feed Pump

Details on the fuel pump's construction, operation, and maintenance.

6. Fuel Tank (Option)

Information on the optional fuel tank specifications and installation.

CHAPTER 4 GOVERNOR

1. Governor

Explanation of the engine speed governing system and its components.

2. Injection Limiter

Description of the mechanism controlling maximum fuel injection.

3. No-Load Maximum Speed Limiter

Details on the component limiting engine speed without load.

4. Idling Adjuster

Information on how to adjust the engine's idling speed.

5. Engine Stop Lever

Description of the mechanism used to shut down the engine.

CHAPTER 5 INTAKE AND EXHAUST SYSTEM

1. Intake and Exhaust System

Overview of the engine's air intake and exhaust flow systems.

2. Intake Silencer

Information on the component that reduces intake noise.

3. Exhaust System

Description of the engine's exhaust gas flow and manifold.

4. Breather

Details on the engine's crankcase ventilation system.

CHAPTER 6 LUBRICATION SYSTEM

1. Lubrication System

Overview of the engine's oil circulation and lubrication mechanisms.

2. Oil Pump

Explanation of the oil pump's construction, operation, and specifications.

3. Oil Filter

Description of the oil filtering system and its maintenance.

4. Oil Pressure Regulator Valve

Details on the valve controlling engine oil pressure.

5. Oil Pressure Measurement

Instructions on how to measure engine oil pressure.

CHAPTER 7 DIRECT SEA-WATER COOLING SYSTEM

1. Cooling System

Overview of the engine's cooling fluid circulation.

2. Water Pump

Description and diagrams of the cooling water pump assembly.

3. Thermostat

Information on the thermostat's function and operation in the cooling system.

4. Anticorrosion Zinc

Details on the sacrificial anodes used to prevent corrosion.

5. Kingston Cock (Optional)

Information on the optional water intake control valve.

6. Bilge Pump and Bilge Strainer (Optional)

Description of optional bilge water management systems.

CHAPTER 8 FRESH WATER COOLING SYSTEM

1. Cooling System

Overview of the fresh water cooling system setup.

2. Sea Water Pump

Details on the pump used for sea water cooling.

3. Fresh Water Pump

Description of the pump used for fresh water cooling.

4. Heat Exchanger

Information on the component that transfers heat between coolant streams.

5. Filler Cap and Subtank

Details on the coolant reservoir and filler cap assembly.

6. Thermostat

Explanation of the thermostat's function and operation in the fresh water system.

7. Cooling Water Temperature Switch

Description of the sensor that monitors coolant temperature.

8. Precautions

Important safety and operational guidelines for the cooling system.

[A] For engine models 1GM10, 2GM20(F) and 3GM30(F)

1. Construction

Description of the reduction and reversing gear construction for specific models.

1-2 Specifications

Technical data for the reduction and reversing gear.

1-3 Power transmission system

Explanation of how power is transmitted through the gearbox.

1-4 Drawing

Exploded views and diagrams of gearbox components.

2. Shifting Device

Details on the mechanism for changing gear.

2-6 Cautions

Safety and handling advice for the gearbox.

3. Inspection and Servicing

Procedures for checking and maintaining the gearbox.

[D] V-drive Gear, Model KM3V

1. Construction

Description of the V-drive gearbox construction.

2. Specifications

Technical data for the V-drive gearbox.

3. Power transmission system

Explanation of power flow in the V-drive gearbox.

4. Cooling System (Sea-water Cooling Engine)

Details on the V-drive gearbox cooling system.

5. Piping Diagrams

Schematic of piping for the V-drive cooling system.

6. Inspection and Servicing

Procedures for checking and maintaining the V-drive gearbox.

8. Disassembly

Steps for taking apart the V-drive gearbox.

9. Reassembly

Steps for putting the V-drive gearbox back together.

CHAPTER 11 REMOTE CONTROL SYSTEM

1. Construction

Overview of the remote control system's design and components.

2. Clutch and Speed Regulator Remote Control

Details on the remote control for clutch and engine speed.

3. Engine Stop Remote Control

Information on the remote control for shutting down the engine.

CHAPTER 12 ELECTRICAL SYSTEM

1. Electrical System

Overview of the engine's electrical components and wiring.

2. Battery

Information on the battery's specifications, maintenance, and testing.

3. Starter Motor

Description of the starter motor's construction, operation, and testing.

4. Alternator Standard, 12V/55A

Details on the standard alternator model.

4A. Alternator, Option, 12V/35A

Information on the optional alternator model.

5. Instrument Panel

Description of the gauges and controls on the operator's panel.

6. Tachometer

Information on the engine speed measuring device.

CHAPTER 13 OPERATING INSTRUCTIONS

1. Fuel Oil and Lubricating Oil

Guidelines on selecting and using engine oils.

2. Engine Operating Instructions

Comprehensive guide on how to start and operate the engine.

3. Troubleshooting and Repair

Guidance on diagnosing and fixing common engine problems.

CHAPTER 14 DISASSEMBLY AND REASSEMBLY (Direct Sea-Water Cooling Engine)

1. Disassembly and Reassembly Precautions

Important safety and preparation steps before maintenance.

2. Disassembly and Reassembly Tools

List of specialized tools required for service.

3. Others

Information on supplementary materials like sealants and paints.

4. Disassembly

Step-by-step instructions for dismantling the engine.

3. Tightening Torque

Specifications for tightening various bolts and nuts during assembly.

4. Packing Supplement and Adhesive Application Points

Guidance on using sealants and packing materials.

CHAPTER 15 DISASSEMBLY AND REASSEMBLY (Fresh Water Cooling Engine)

1. Disassembly of Fresh Water-Cooled Engine

Procedures for taking apart the fresh water-cooled engine.

2. Reassembly of fresh water-cooled engine

Steps for reassembling the fresh water-cooled engine.

Related product manuals