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Yanmar 3TNV84 Service Manual

Yanmar 3TNV84
394 pages
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0BTNV-G00101
PRINTED IN JAPAN
SERVICE MANUAL
SERVICE MANUAL
3TNV82A
3TNV82A-B
3TNV84
3TNV84T
3TNV84T-B
3TNV88
3TNV88-B
3TNV88-U
4TNV84
4TNV84T
4TNV84T-Z
4TNV88
4TNV88-B
4TNV88-U
4TNV94L
4TNV98
4TNV98-Z
4TNV98-E
4TNV98T
4TNV98T-Z
4TNV106
4TNV106T

Table of Contents

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Yanmar 3TNV84 Specifications

General IconGeneral
BrandYanmar
Model3TNV84
CategoryEngine
LanguageEnglish

Summary

Section 1 Introduction

Section 2 Yanmar Warranties

Yanmar Limited Warranty

Details the coverage, period, owner's obligations, limitations, and exclusions of the Yanmar limited warranty.

Emission System Warranty

Outlines the specific warranty coverage and terms for the engine's emission control system, particularly for US markets.

Section 3 Safety

Safety Statements

Explains the meaning and usage of DANGER, WARNING, and CAUTION safety alert symbols and statements.

Safety Precautions

Lists specific safety precautions related to hazards like scald, explosion, fire, crush, and entanglement.

Section 4 General Service Information

Component Identification

Illustrates and identifies the major components of the Yanmar TNV series engines.

Emission Control Regulations

Details EPA/ARB regulations and explains the emission control labels found on Yanmar TNV engines.

Function of Major Engine Components

Describes the function of key engine components, including the air cleaner, alternator, and fuel system parts.

MAIN ELECTRONIC CONTROL COMPONENTS AND FEATURES

Explains the function and features of electronic control system components like E-ECU and Eco-governor.

Function of Cooling System Components

Details the function of components within the engine cooling system, such as the radiator and thermostat.

Diesel Fuel

Provides specifications and requirements for diesel fuel, including bio-diesel and additional technical requirements.

Engine Oil

Covers engine oil specifications, viscosity, checking, adding, and typical capacities for various Yanmar TNV engines.

Engine Coolant

Details engine coolant specifications, including types, mixing, and replacement intervals.

Specifications

Explains the engine model number description, speed specifications, and general engine specifications.

Section 5 Periodic Maintenance

Before You Begin Servicing

Provides essential safety warnings and precautions before performing any periodic maintenance.

Periodic Maintenance Procedures

Outlines specific maintenance tasks for different operating hour intervals, starting with the initial 50 hours.

After Initial 50 Hours of Operation

Details the initial maintenance tasks to be performed after the first 50 hours of engine operation.

Every 50 Hours of Operation

Lists maintenance tasks to be performed every 50 hours of engine operation, including fuel filter and battery checks.

Every 250 Hours of Operation

Outlines maintenance tasks required every 250 hours, such as draining the fuel tank and replacing oil filters.

Every 500 Hours of Operation

Details maintenance tasks for every 500 hours, including replacing air and fuel filters.

Every 1000 Hours of Operation

Specifies maintenance tasks for every 1000 hours, including cooling system flush and valve clearance adjustment.

Every 1500 Hours of Operation

Lists maintenance tasks for every 1500 hours, such as inspecting fuel injectors and EGR valve.

Every 2000 Hours of Operation

Outlines maintenance tasks for every 2000 hours, including checking fuel and coolant hoses and lapping valves.

Section 6 Engine

Before You Begin Servicing

Provides critical safety warnings and precautions before servicing engine components.

Cylinder Head Specifications

Lists specifications for valve clearance, valve recession, and valve seat angles for cylinder heads.

Push Rod

Details the inspection of push rods for bend and measurement of their clearance.

Rocker Arm and Shaft

Covers inspection of rocker arm shaft hole diameter and outside diameter.

Valve Spring

Provides specifications for valve spring free length and squareness.

Camshaft

Details specifications for camshaft end play, bend, lobe height, and bearing clearances.

Crankshaft

Lists specifications for crankshaft journal diameters, oil clearance, and end play.

Piston

Provides specifications for piston outside diameter, diameter measurement location, and pin bore diameter.

Piston Ring

Lists specifications for piston ring groove width, width, side clearance, and end gap.

Connecting Rod

Provides specifications for connecting rod small and big end dimensions and oil clearance.

Tappet

Details specifications for tappet bore diameter, stem diameter, and oil clearance.

Cylinder Block

Lists specifications for cylinder inside diameter and bore taper.

Special Torque Chart

Provides torque values for various bolts and nuts used in engine assembly.

Measuring Instruments

Lists and describes various measuring instruments used for engine service.

Section 7 Fuel System

Before You Begin Servicing

Outlines critical safety warnings and precautions related to fuel system servicing, including fuel handling and ECU misuse.

Introduction

Introduces the MP fuel injection pump, its components, types, and features.

Fuel Injection Pump

Details the MP fuel injection pump, its components, types, and service requirements.

Stop Solenoid

Explains the function and operation of the stop solenoid in the fuel injection pump and its failure modes.

Cold Start Device

Describes the function and operation of the cold start device (CSD) for improving engine starting at low temperatures.

Electronically controlled governor

Explains the operation of the electronically controlled governor (Eco Governor) and its components in engine speed control.

Fuel System Specifications

Provides special torque chart and test/adjustment specifications for fuel system components like injectors and pumps.

Fuel System Diagram

Illustrates the components and flow of the diesel fuel system, including tank, filters, and injectors.

Fuel System Components

Identifies and lists the fuel system components for 2-valve and 4-valve cylinder heads.

Fuel Injection Pump

Details the procedures for removing and installing the MP fuel injection pump, including timing adjustments.

Checking and Adjusting Fuel Injection Timing

Explains how to determine and adjust the fuel injection timing for optimal engine performance.

Fuel Injectors

Covers the removal, testing, disassembly, inspection, and installation of fuel injectors.

Section 8 Cooling System

Before You Begin Servicing

Provides critical safety warnings and precautions before servicing the cooling system components.

Introduction

Introduces the service procedures for the 4TNV84 engine coolant pump.

COOLING SYSTEM DIAGRAM

Illustrates the components and flow of the engine cooling system, including the radiator and coolant pump.

Engine Coolant Pump Components

Identifies and lists the components of the engine coolant pump assembly.

Engine Coolant System Check

Details how to check the engine coolant system for leaks using a cooling system tester.

Engine Coolant Pump

Covers the removal, disassembly, cleaning, inspection, reassembly, and installation of the engine coolant pump.

Section 9 Lubrication System

Before You Begin Servicing

Provides critical safety warnings and precautions before servicing the lubrication system components.

Introduction

Introduces the service procedures for the trochoid oil pumps used in various Yanmar TNV engines.

OIL PUMP SERVICE INFORMATION

Provides information on engine oil pressure and oil pump specifications.

Trochoid Oil Pump

Details the components and service information for the trochoid oil pumps.

Disassembly of Oil Pump

Outlines the steps for disassembling the oil pump assembly from the gear case cover.

Cleaning and Inspection

Describes how to clean and inspect oil pump components for wear or damage, including clearance measurements.

Reassembly of Oil Pump

Details the procedures for reassembling the oil pump assembly, including lubrication and torque specifications.

Section 10 Turbocharger

Before You Begin Servicing

Provides critical safety warnings and precautions before servicing the turbocharger.

Introduction

Introduces the service information and specifications for Yanmar RHF5, RHB31, and RHB51 model turbochargers.

Troubleshooting

Covers common problems related to turbochargers like excessive exhaust smoke, oil consumption, and poor response.

Turbocharger Components

Identifies and illustrates the various components of the turbocharger assembly.

Turbocharger Component Functions

Explains the theory of operation and function of turbocharger components like turbine, compressor, and waste gate.

Washing Procedure

Details the procedure for washing the turbocharger compressor impeller using blower wash fluid or water.

Periodic Inspection

Outlines the schedule and procedures for periodic inspection of the turbocharger, including visual checks and rotor play.

Checking Rotor Play

Explains how to check rotor end play and run-out for the turbocharger using a dial indicator.

Waste Gate Valve Test

Details the procedure for testing the waste gate valve operation to ensure proper engine performance.

Waste Gate Actuator Leak Test

Explains how to perform a leak test on the waste gate actuator to verify its integrity.

Installation of Turbocharger

Covers the steps for installing the turbocharger onto the exhaust manifold and connecting oil lines.

Section 11 Starter Motor

Before You Begin Servicing

Provides critical safety warnings and precautions before servicing the starter motor components.

Introduction

Introduces the starter motor and provides information on standard and optional models.

Starter Motor Information

Lists specifications for various Yanmar starter motors, including part numbers, voltage, and performance data.

Starter Motor Specifications

Details technical specifications for a representative starter motor, covering electrical, mechanical, and performance data.

Starter Motor Troubleshooting

Offers a flowchart for diagnosing and troubleshooting common starter motor problems, from battery to engine issues.

Starter Motor Components

Identifies and illustrates the various components of the starter motor assembly with numbered parts.

Starter Motor

Covers the removal, disassembly, cleaning, inspection, reassembly, and installation of the starter motor.

Check Pinion Projection Length

Explains how to check and adjust the pinion projection length for proper starter engagement.

No-Load Test

Details the procedure for performing a no-load test on the starter motor to check its performance characteristics.

Section 12 Alternator

Before You Begin Servicing

Provides critical safety warnings and precautions before servicing the alternator or dynamo components.

Introduction

Introduces the service procedures for the dynamos and alternators, referencing specific Yanmar part numbers.

Dynamo and Alternator Information

Lists standard and optional dynamo and alternator models with their specifications.

Alternator Specifications

Provides detailed specifications for the Yanmar alternator, including output, voltage, and dimensions.

Dynamo Specifications

Provides detailed specifications for the Yanmar dynamo, including output, voltage, and dimensions.

Alternator Troubleshooting

Offers a troubleshooting guide for common alternator problems, such as battery indicator issues and voltage variations.

Alternator Components

Identifies and illustrates the various components of the alternator assembly.

Alternator Wiring Diagram

Presents the wiring diagram for the alternator, showing connections to key components like battery and key switch.

Alternator Standard Output

Shows the standard output characteristics of the alternator based on RPM and ambient temperature.

Alternator

Covers the removal, disassembly, reassembly, and installation of the alternator assembly.

Dynamo Component Location

Identifies and illustrates the components of the dynamo assembly.

Dynamo Wiring Diagram

Presents the wiring diagram for the dynamo, showing its electrical connections and operation.

Operation of Dynamo

Explains the basic operation of the dynamo, including the role of magnets, stator, and current limiter.

Dynamo Standard Output

Displays the standard output characteristics of the dynamo based on alternator speed.

Testing of Dynamo

Details tests for stator coil continuity, short-to-ground, and regulated output.

Section 13 Electronic Control System

Engines available with the electronic control system

Lists the specific Yanmar engine models that are equipped with the electronic control system.

BEFORE YOU BEGIN SERVICING

Provides critical safety warnings and precautions before servicing the electronic control system components.

ELECTRONIC CONTROL SYSTEM

Explains the features and operation of the electronic engine control system, including EGR and governor functions.

Electronic control harness connections

Provides diagrams and information on the electronic control system's harness connections for proper setup.

Section 14 Electric Wiring

Electric Wiring Precautions

Outlines essential precautions to prevent electrical component failure and warranty issues related to wiring.

Electrical Wire Resistance

Provides a table of electrical wire resistance values based on AWG size and metric nominal area.

Battery Cable Resistance

Lists maximum total battery cable lengths for different starter motor outputs based on AWG size.

Electrical Wire Sizes - Voltage Drop

Provides charts for selecting electrical wire sizes to minimize voltage drop in circuits.

Conversion of AWG to European Standards

Offers a conversion table between AWG wire sizes and European standards for conductor diameter and area.

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