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Summary of Contents for 3TNM74F

Page 1: ...YANMAII ...

Page 2: ...ecifications in this manual are based on the latest information available at the time of publishing The illustrations used in this manual are intended as representative reference views only Moreover because of our continuous product improvement policy we may modify information illustrations and or specifications to explain and or exemplify a product service or maintenance improvement We reserve th...

Page 3: ... 3 1 General Service Information 4 1 Periodic Maintenance 5 1 Engine 6 1 Fuel System 7 1 Cooling System 8 1 Lubrication System 9 1 Starter Motor 10 1 Alternator 11 1 Electric Wiring 12 1 Troubleshooting 13 1 TNV IOI Service Manual Find manuals at https best manuals com ...

Page 4: ...TABLE OF CONTENTS This Page Intentionally Left Blank ii TNV IOI Service Manual Find manuals at https best manuals com ...

Page 5: ...anual are for a typical engine some specifications and components may be different from your engine Refer to the documentation supplied by the optional equipment manufacturer for specific service instructions YANMAR products are continuously undergoing improvement This Service Manual might not address possible field modifications to the equipment Contact an authorized YANMAR industrial engine deal...

Page 6: ...INTRODUCTION This Page Intentionally Left Blank 1 2 TNV IOI Service Manual Find manuals at https best manuals com ...

Page 7: ...R will Do 2 4 What is not Covered by this Warranty 2 4 Warranty Limitations 2 5 Warranty Modifications 2 5 Questions 2 5 EMISSION SYSTEM WARRANTY 2 6 YANMAR CO LTD LIMITED EMISSION CONTROL SYSTEM WARRANTY USA ONLY 2 6 Your Warranty Rights and Obligations 2 6 Manufacturer s Warranty Period 2 6 Warranty Coverage 2 7 Warranted Parts 2 7 Exclusions 2 8 Owner s Warranty Responsibilities 2 8 TNV IOI Ser...

Page 8: ...YANMAR WARRANTIES This Page Intentionally Left Blank 2 2 TNV IOI Service Manual Find manuals at https best manuals com ...

Page 9: ...or these specific parts only the cylinder block cylinder head crankshaft forging connecting rods flywheel flywheel housing camshaft timing gear and gear case The warranty period for both the standard limited warranty and the extended limited warranty by duration or operation hours begins on the date of delivery to the original retail purchaser and is valid only until the applicable warranted durat...

Page 10: ...aterial and or workmanship Such repairs and or replacements will be made at a location designated by YANMAR at no cost to the purchaser for parts or labor What is not Covered by this Warranty This warranty does not cover parts affected by or damaged by any reason other than defective materials or workmanship including but not limited to accident misuse abuse Acts of God neglect improper installati...

Page 11: ...e brought within one 1 year after the cause of action accrues or it shall be barred Some states and countries do not allow certain limitations on warranties or for breach of warranties This warranty gives you specific legal rights and you may also have other rights which vary from state to state and country to country Limitations set forth in this paragraph shall not apply to the extent that they ...

Page 12: ...arge to you including diagnosis parts and labor Manufacturer s Warranty Period The model year 1998 or later certified and labeled non road compression ignition engines are warranted for the periods listed below If any emission related part on your engine is found to be defective during the applicable warranty period the part will be replaced by YANMAR If your engine is And its maximum And its rate...

Page 13: ...rt during the warranty period Any replacement part which is functionally identical to the original equipment part in all respects may be used in the maintenance or repair of your engine and shall not reduce YANMAR s warranty obligations Add on or modified parts that are not exempted may not be used The use of any non exempted add on or modified parts shall be grounds for disallowing a warranty War...

Page 14: ...led due to abuse neglect improper maintenance or unapproved modifications Your engine is designed to operate on diesel fuel only Use of any other fuel may result in your engine no longer operating in compliance with applicable emissions requirements You are responsible for initiating the warranty process You are responsible for presenting your engine to an authorized YANMAR dealer or distributor a...

Page 15: ...Section 3 SAFETY Page SAFETY STATEMENTS 3 3 SAFETY PRECAUTIONS 3 4 TNV IOI Service Manual 3 1 ...

Page 16: ...SAFETY This Page Intentionally Left Blank 3 2 TNV IOI Service Manual ...

Page 17: ... that has a label attached to it make sure you order the new part and label at the same time A This safety alert symbol appears with most safety statements It means attention become alert your safety is involved Please read and abide by the message that follows the safety alert symbol TNV IOI Service Manual SAFETY DANGER indicates a hazardous situation which if not avoided will result in death or ...

Page 18: ...itions When you remove any fuel system component to perform maintenance such as changing the fuel filter place an approved container under the opening to catch the fuel Never use a shop rag to catch the fuel Vapors from the rag are flammable and explosive Wipe up any spills immediately Wear eye protection The fuel system is under pressure and fuel could spray out when you remove any fuel system co...

Page 19: ...o the ON position for 10 to 15 seconds or until the fuel coming out of the air bleed port is free of bubbles to allow the electric fuel pump to prime the system If the unit has a mechanical fuel pump operate the fuel priming pump several times until the fuel coming out of the air bleed port is free of bubbles Failure to comply will result in death or serious injury TNV IOI Service Manual SAFETY Cr...

Page 20: ...ection as required by the task at hand Never wear jewelry unbuttoned cuffs ties or loose fitting clothing when you are working near moving rotating parts such as the cooling fan flywheel or PTO shaft Always tie back long hair when you are working near moving rotating parts such as a cooling fan flywheel or PTO shaft Never operate the engine while wearing a headset to listen to music or radio becau...

Page 21: ...NMAR industrial engine dealer or distributor repair the damage Failure to comply could result in death or serious injury TNV IOI Service Manual SAFETY Shock Hazard Turn off the battery switch if equipped or disconnect the negative battery cable before servicing the electrical system Check the electrical harnesses for cracks abrasions and damaged or corroded connectors Always keep the connectors an...

Page 22: ... Precautions CAUTION Be sure to secure the engine solidly to prevent injury or damage to parts due to the engine falling during work on the engine Pinch Hazard Carefully rotate the alternator toward the cylinder block while loosening the V belt Failure to comply may result in minor or moderate injury If any oil pump component clearance exceeds its limit the oil pump must be replaced as an assembly...

Page 23: ...ine will be hard to start and the engine oil may not flow easily Contact your authorized YANMAR industrial engine dealer or distributor if the engine will be operated outside of this standard temperature range TNV IOI Service Manual SAFETY If any indicator illuminates during engine operation stop the engine immediately Determine the cause and repair the problem before you continue to operate the e...

Page 24: ... approximately 15 minutes while you check for proper engine oil pressure diesel fuel leaks engine oil leaks coolant leaks and for proper operation of the indicators and or gauges During the first hour of operation vary the engine speed and the load on the engine Short periods of maximum engine speed and load are desirable Avoid prolonged operation at minimum or maximum engine speeds and loads for ...

Page 25: ...er separator 2 3 turns counterclockwise Be sure to tighten the air vent screw after the water has drained out TNV IOI Service Manual SAFETY When the engine is operated in dusty conditions clean the air cleaner element more frequently Never operate the engine with the air cleaner element s removed This may allow foreign material to enter the engine and damage it The maximum air intake restriction i...

Page 26: ...Do not reverse the positive and negative ends of the battery cable The alternator diode and stator coil will be damaged 3 12 Safety Precautions When the battery indicator goes out it should not come on again The battery indicator only comes on during operation if the alternator fails However if an LED is used in the battery indicator the LED will shine faintly during normal operation Using a non s...

Page 27: ...position during the reassembly process Do not rotate the crankshaft with the injection pump removed TNV IOI Service Manual SAFETY Keep the piston pin parts piston assemblies and connecting rod assemblies together to be returned to the same position during the reassembly process Label the parts using an appropriate method Do not allow the honing tool to operate in one position for any length of tim...

Page 28: ...ning Read and understand this Service Manual before you operate or service the machine to ensure that you follow safe operating practices and maintenance procedures Machine safety signs and labels are additional reminders for safe operating and maintenance techniques See your authorized YANMAR industrial engine dealer or distributor for additional training 3 14 Safety Precautions TNV IOI Service M...

Page 29: ...esel Fuel Specifications 4 9 Filling the Fuel Tank 4 13 Priming the Fuel System 4 14 ENGINE OIL 4 15 Engine Oil Specifications 4 15 Engine Oil Viscosity 4 15 Checking Engine Oil 4 16 Adding Engine Oil 4 16 Engine Oil Capacity Typical 4 16 ENGINE COOLANT 4 17 Engine Coolant Specifications 4 18 Filling Radiator with Engine Coolant 4 18 Engine Coolant Capacity Typical 4 19 SPECIFICATIONS 4 20 Descrip...

Page 30: ...ENERAL SERVICE INFORMATION 3TNV80F 4 23 ENGINE SERVICE INFORMATION 4 24 TIGHTENING TORQUES FOR STANDARD BOLTS AND NUTS 4 25 ABBREVIATIONS AND SYMBOLS 4 27 UNIT CONVERSIONS 4 28 4 2 TNV IOI Service Manual ...

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