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2QM15
Service manual
Yanmar 2QM15 Service Manual
Marine diesel engine
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Operation manual
(81 pages)
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Contents
General
Intake Side Viewed from Stern
Exhaust Side Viewed from Bow
Specifications
Principal Construction
Performance Curves
Features
Engine Cross-Section
Exterior Views
System Diagrams
Cooling System Exploded Diagram
Lubrication System Exploded Diagram
Fuel System Exploded Diagram
Electrical System Exploded Diagram
Timing Gear Train Diagram
Reduction Reversing Power Transmission System Diagram
Remote Control System Diagram
Standard Accessories
Parts Packed with the Engine/Mounted on Engine
Optional Accessories
Basic Engine
Cylinder Block Construction/Inspection
Cylinder Bore and Ledge
Cylinder Bore Measurement
Cylinder Liner Construction/Inspection
Cylinder Liner Bore Diameter Measurement
Cylinder Liner Replacement
Measuring Cylinder Liner Projection
Cylinder Head Construction
Cylinser Head Inspection and Measurement
Cylinder Head Valve Seat
Measuring Valve Recess
Dismounting and Remounting the Cylinder Head
Intake and Exhaust Valves, Valve Guide and Valve Spring
Inspecting and Measuring the Intake and Exhaust Valves/Valve Guides
Valve Spring
Precombustion Chamber and Top Clearance
Valve Stem Seal
Spring Retainer and Spring Cotter Pin
Intake and Exhaust Valve Rocker Arm
Adjusting Intake and Exhaust Valve Head Clearance
Decompression Mechanism
Disassembling and Reassembling the Cylinder Head
Piston
Piston Ass'y Construction
Piston Inspection/Replacement
Piston Pin and Piston Pin Bushing
Piston Rings
Connecting Rod
Connecting Rod Ass'y Construction
Connecting Rod Inspection
Crank Pin Bushing
Tightening the Connecting Rod Bolts
Crank Pin and Bushing Clearance (Oil Clearance)
Crank Pin Bushing Replacement Precautions
Connecting Rod Side Clearance
Piston Bushing and Piston Pin
Crankshaft
Crankshaft Ass'y and Bearing Construction
Crankshaft Inspection/Crank Journal and Crank Pin
Crankshaft Side Gap
Main Bearing
Inspecting the Thrust Metal
Replacing the Crank Bearing
Crankshaft Oil Seal
Oil Seal Type and Size/Inserting Precautions
Camshaft Construction/Inspection
Camshaft Ball Bearing
Tappets
Push Rods
Fuel Cam Assembly Precautions
Timing Gear Train Construction
Timing Gear Disassembly and Reassembly
Timing Gear Inspection
Backlash
Inspecting the Gear Tooth Surface/Gear Boss
Fuel System
Fuel System Construction/Diagram
Fuel Injection System Specifications
Injection Pump Construction/Diagram
Operation of Plunger
Delivery Valve Fuel Suction Collar
Injection Pump Disassembly
Inspecting Injection Pump Parts
Injection Pump Reassembly
Inspection of Injection Pump after Reassembly
Injection Pump Adjustment
Control Rack Resistance Test
Fuel Injection Timing
Setting Pump on Tester
Adjusting the Plunger Head Gap
Checking the Cylinder Injection Interval
Delivery Valve Oil-Tight Test
Plunger Pressure Test
Measuring the Fuel Injection Volume
Injection Nozzle Construction/Diagram
Yanmar Throttle Nozzle
Nozzle Operation
Nozzle Disassembly and Assembly
Injection Nozzle Inspection and Adjustment
Carbon and Corrosion on the Nozzle Body
Checking Nozzle Action/Adjusting the Nozzle Injection Pressure
Nozzle Seat Oil Tightness Check/Checking the Spray Condition/Inspecting the Nozzle Spring
Fuel Filter Construction/Diagram/Inspection
Fuel Feed Pump Construction/Diagram/Inspection
Fuel Tank Diagram
Governor
Governor Construction/Diagram
Governor Operation/Performance/Disassembly
Parts Inspection and Replacement
Regulator Spring
Sleeve
Governor Weight
Governor Lever Shaft
Regulator Lever Shaft
Injection Limiter Construction/Diagram/Inspectin/Adjustment
No-Load Maximum Speed Limiter Construction/Handling Precautions
Engine Stop Spring Diagram
Intake and Exhaust System
Intake and Exhaust System Exploded Diagram
Intake Silencer Construction/Inspection
Exhaust System
Exhaust Manifold and Mixing Elbow
Exhaust Manifold Inspection
Mixing Elbow Inspection
Breather Pipe
Lubrication System
Lubrication System Diagram
Lubrication System Description
Oil Pump Construction/Diagram/Disassembly
Oil Pump Inspection
Oil Filter Construction/Diagram/Replacement
Oil Pressure Regulator Valve
Oil Pressure Measurement
Cooling System
Cooling System Diagram
Cooling System Compositin
Cooling Water Route
Piping
Water Pump Construction and Operation
Cooling Water Pump (with Bilge Pump) Diagram/Specifications
Water Pump Disassembly/Reassembly/Handling/Inspection
Thermostat Construction/Operation/Inspection
Anticorrosion Zinc - Principles/Inspection
Kingston Cock Construction/Handling Precautions/Inspection
Bilge Strainer
Reduction and Reversing Gear
Reduction and Reversing Gear Construction/Specifications
Power Transmission System
Reduction and Reversing Gear Exploded Diagram
Reduction and Reversing Gear Installation
Reduction and Reversing Gear Operation and Maintenance
Lube Oil
Precautions/Side Cover
Reduction and Reversing Gear Inspection and Servicing
Clutch Case/Bearing
Gear
Steel Plate
Friction Plate
Pressure Plate
Driving Plate
Retainer
Shift Ring
Shift Fork and Shift Lever
Output Shaft
Damper Disc
Input Shaft
Intermediate Shaft
Reduction and Reversing Gear Disassembly
Disassembling the Clutch and Accessories
Disassembling the Input Shaft/Output Shaft
Disassembling the Intermiediate Shaft
Disassembling the Operating System
Reduction and Reversing Gear Reassembly
Reassembling the Output Shaft
Reassembling the Input Shaft/Intermediate Shaft
Installing the Input Shaft and Output Shaft
Reassembling and Installing the Operating System
Installing the Output Shaft Coupling
Remote Control System
Remote Control System Construction/Diagram
Clutch Regulator One-Handle Remote Control
One-Handle Remote Control Composition
Engine Side Installation
Decompression Remote Control
Engine Stop Remote Control
Electrical System
Electrical System Composition/Diagram
Electrical System Schematic Diagram
Battery Construction/View
Battery Capacity and Battery Cables
Battery Visual Inspection
Checking the Electrolyte
Voltage Test
Washing the Battery
Battery Charging
Battery Storage Precautions
Starter Motor Specifications and Performance/Construction
Starter Motor Operation/Disassembly
Magnetic Switch
Rear Cover/Brush Holder
Yoke
Armature
Pinion
Starter Motor Inspection
Armature/Field Coil Inspection
Brush/Magnetic Switch Inspection
Starter Motor Reassembly Precautions
Pinion Inspection
Starter Motor Testing
Starter Motor: Various Problems and Their Remedies
Alternator Specifications/Characteristics
Alternator Construction/Exploded Diagram
Alternator Diagrams and Parts List
Alternator Operation
Alternator Circuit Diagram
Wiring (LR135-31)
LR155-04 (Optional) R Terminal
Alternator Handling Precautions
Alternator Disassembly
Alternator Inspection and Adjustment
Diodes
Rotor
Stator Coil
Alternator Brush
Alternator Reassembly Precautions
Alternator Performance Test
Alternator Troubleshooting and Repair
Alarm Circuit
Oil Pressure Alarm
Cooling Water Temperature Alarm
Alarm Buzzer
Tachometer
Installation and Fitting
Propeller Selection
Engine Installation
Engine Room/Bed
Engine Dimensions
Engine Installation Method
Fixed Installation
Flexible Mounting
Engine Centering
Coupling Mating Face Measurement
Stern Equipment
Stern Tube Installation
Propeller Shaft Installation
Propeller Installation
Interior Piping and Wiring
Exhaust Pipe
Exhaust Muffler Installation
Cooling Water Pipe
Kingston Cock
Fuel Tank and Fuel Piping
Cooling Water Outlet Pipe
Battery Installation and Wiring
Instrument Panel
Fuel Piping
Remote Control Stand Installation Dimensions
Front Power Take-Off
Front Drive System
Front Power Take-Off Allowable Output
Operating Instructions
Fuel Oil and Lubricating Oil
Properties of Fuel
Recommended Fuels
Fuel Selection Precautions
Properties and Compositions of Fuel of Various National Standards Chart
Methods of Identifying Fuel Properties
Relationship between Fuel Properties and Engine Performance
Troubles Caused by Bad Fuel
Lubricating Oil
Reqired Lubricating Oil Conditions
Classification by Viscosity
Fuel Handling Precautions
SAE Service Classification and API Service Classification
Recommended Lubricating Oils
Engine Oil Replacement and Handling
Adding Oil
Oil Capacity
Engine Operating Instructions
Preparations before Starting the Engine
Fueling Up/Adding Lubricating Oil
Bleeding the Fuel System
Starting and Warm-Up
After Starting
Operation
Checks During Operation
Stopping
Emergency Stop
Storage When Moored for an Extended Period
Inspection and Procedures after Stopping
Troubleshooting and Repair
Troubles and Corrective Action at Starting
Troubles and Corrective Action During Operation
Disassembly and Reassembly
Disassembly and Reassembly Precautions
Disassembly and Reassembly Tools
Supplementary Packing Agent
Paint
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Quick Links
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Specifications
2
Cooling System Exploded Diagram
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See also:
Operating Manual
0000A0A1002-8909
SERVICE MANUAL
MARINE DIESEL ENGINE
2QM15
1989.9
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Troubleshooting
Alternator troubleshooting and repair
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Summary of Contents for Yanmar 2QM15
Page 1
0000A0A1002-8909 SERVICE MANUAL MARINE DIESEL ENGINE 2QM15 1989.9...
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