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Table of Contents
Related Manuals for Yanmar 3JH4BE
Summary of Contents for Yanmar 3JH4BE
- Page 1 M9961-03E091...
- Page 2 Publication No. M9961-03E091 History of Revision Manual Name Service Manual for Marine Diesel Engine Engine Model: 3JH4(B)(C)(M)E / 4JH4(F)(B)(B4)(C)(M)E Number Date of Reason for Correction item Corrected Outline of correction revision correction No (page) revision New edition February 2004 Printed in Japan M9961-03E091...
- Page 3 FOREWORD This service manual has been compiled for engineers engaged in sales, service, inspection and maintenance. Accordingly, descriptions of the construction and functions of the engine are emphasized in this manual, while items, which should already 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.
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Page 4: Safety Labels
FOR SAFETY 1. SAFETY LABELS • Most accidents are caused by negligence of basic safety rules and precautions. For accident prevention, it is important to avoid such causes before development to accidents. Please read this manual carefully before starting repair or maintenance to fully understand safety precautions and appropriate inspection and maintenance procedures. -
Page 5: Safety Precautions
2. Safety Precautions (1) SERVICE AREA • Sufficient Ventilation Inhalation of exhaust fumes and dust particles may be hazardous to ones health. Running engines welding, sanding, painting, and polishing tasks should be only done in well ventilated areas. • Safe / Adequate Work Area The service area should be clean, spacious, level and free from holes in the floor, to prevent "slip"... - Page 6 (4) GENUINE PARTS and MATERIALS • Genuine Parts Always use genuine YANMAR parts or YANMAR recommended parts and goods. Damage to the engine, shortened engine life and or personal injury may result.
- Page 7 (5) FASTENER TORQUE • Torquing Fasteners Always follow the torque values and procedures as designated in the service manual. Incorrect values, procedures and or tools may cause damage to the engine and or personal injury. (6) Electrical • Short Circuits Always disconnect the (-) Negative battery cable before working on the electrical system.
- Page 8 (8) FURTHER PRECAUTIONS • Fueling / Refueling Keep sparks, open flames or any other form of ignition (match, cigarette, etc.) away when fueling/refueling the unit. Fire and or an explosion may result. • Hot Surfaces. Do NOT touch the engine (or any of its components) during running or shortly after shutting it down.
- Page 9 3. Precautions for Service Work (1) Precautions for Safety Read the safety precautions given at the beginning of this manual carefully and always mind safety in work. (2) Preparation for Service Work Preparation is necessary for accurate, efficient service work. Check the customer ledger file for the history of the engine.
- Page 10 CONTENTS 1. General ..........................1 1.1 Exterior views ...........................1 1.2 Specifications ...........................2 1.3 Fuel oil, lubricating oil and cooling water .................4 1.3.1 Fuel oil .............................. 4 1.3.2 Lubricating oil............................ 4 1.3.3 Cooling water ............................ 5 1.4 Engine outline ..........................6 1.5 Piping diagrams ........................16 1.6 Exhaust gas emission regulation ...................22 1.6.1 Engine identification (3JH4E)......................
- Page 11 4. Disassembly and Reassembly ..................71 4.1 Disassembly and reassembly precautions ................71 4.2 Disassembly and reassembly tools ..................72 4.2.1 General handtools........................... 72 4.2.2 Special handtools..........................75 4.2.3 Measuring instruments........................78 4.3 Disassembly and reassembly ....................82 4.3.1 Disassembly............................ 82 4.3.2 Reassembly ............................ 92 5.
- Page 12 5.6 Camshaft and tappets ......................126 5.6.1 Camshaft............................126 5.6.2 Tappets ............................128 5.7 Timing gear ..........................129 5.7.1 Inspecting the gears........................129 5.7.2 Gear timing marks......................... 129 5.8 Flywheel and housing ......................130 5.8.1 Position of top dead center and fuel injection timing..............130 5.8.2 Damper disc and cooling fan ......................
- Page 13 8. Lubrication System ...................... 152 8.1 Lubrication system .......................152 8.2 Lube oil pump ........................153 8.2.1 Lube oil pump construction ......................153 8.2.2 Specifications of lube oil pump ..................... 153 8.2.3 Lube oil pump disassembly and reassembly ................153 8.2.4 Lube oil pump inspection ......................154 8.2.5 Oil pressure control valve construction ..................
- Page 14 9.5.7 Mounting the coolant recovery tank ....................167 9.5.8 Precautions on usage of the coolant recovery tank ..............168 9.6 Thermostat ...........................169 9.6.1 Functioning of thermostat ......................169 9.6.2 Thermostat construction ....................... 169 9.6.3 Characteristics of thermostat ......................169 9.6.4 Thermostat inspection........................169 9.6.5 Testing the thermostat ........................
- Page 15 12.4.5 Inspection............................ 194 12.5 Alternator 12V/80A (Optional) ....................195 12.5.1 Specifications..........................195 12.5.2 Structure ............................. 196 12.5.3 Wiring diagram..........................197 12.5.4 Standard output characteristics ....................197 12.6 Instrument panel ........................198 12.6.1 B-type instrument panel (Optional) ..................... 198 12.6.2 C-type instrument panel......................198 12.7 Warning devices .........................199 12.7.1 Oil pressure alarm........................
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Page 16: Exterior Views
Non-Operating Side Engine name plate (on the rocker arm cover) Fresh water filler cap Coolant tank / Heat exchanger Alternator Exhaust manifold Mixing elbow Starter motor Sea water pump <Note> This illustration shows the 3JH4E with Yanmar marine gear (Model:KM35P). -
Page 17: Specifications
1. General 1.2 Specifications (1) 3JH4E, 3JH4BE, 3JH4CE, 3JH4ME Official engine model name unit 3JH4E Company internal model name 3JH4E 3JH4BE 3JH4CE 3JH4ME Marine gear model KM35P KM35A SD40 Bobtail Pleasure use Type Vertical water cooled 4 cycle diesel engine... - Page 18 1. General (2) 4JH4E series (4JH4E, 4JH4FE, 4JH4BE, 4JH4B4E, 4JH4CE, 4JH4ME) Official engine model name unit 4JH4E Company internal model name 4JH4E 4JH4FE 4JH4BE 4JH4B4E 4JH4CE 4JH4ME KM35P ZF30M KM35A2 KM4A1 SD40 Bobtail Marine gear model Pleasure use Type Vertical water cooled 4 cycle diesel engine Combustion system Direct injection Air charging...
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Page 19: Lubricating Oil
1. General 1.3 Fuel oil, lubricating oil and cooling water 1.3.1 Fuel oil IMPORTANT: Only use the recommended fuel to obtain the best engine performance and prevent damage of parts, also prevent air pollution. (1) Selection of fuel oil Use the following diesel fuels for best engine performance: BS 2869 A1 or A2 Fuels equivalent to Japanese Industrial Standard, JIS. -
Page 20: Cooling Water
1. General (2) Selection of marine gear lube oil KM35P, KM35A2 for 3JH4E series KM35P, KM35A2 and KM4A1 for 4JH4(B)(B4)E Use the following engine oil • API classification ..CD or better (Standards of America Petroleum Institute) • SAE viscosity ..#20 or #30 (Standard of Society of Automotive Engineering) Apply ATF oil to marine gear ZF30M for 4JH4FE.