Yanmar 3JH2 Series, Service Manual

Page 1: ...3JH2 Series 2000 3 10 MARINE DIESEL ENGINE SERVICE MANUAL 0000A0A1015 9112 ...

Page 2: ...series ...

Page 3: ...bolts tightening torque Added the tightening torque of nut for the remote control cable connec tion of clutch shifting lever Injection timing changed Added the Exterior Views Added the Specifieations Added the Engine Outiine Added the Pertomance Curves Added the Piping Diagrams Added the Fuel Injection Pump Sewice Data Added the Intake and Exhaust System figure Added the Lubrieation System figure ...

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Page 5: ...TEM 1 Cooling Water System 6 1 2 Sea Water Pump 6 4 3 Fresh Water Pump 6 7 4 Heat Exchanger 6 10 5 Pressure Cap and Sub Tank 6 12 6 Thermostat 6 14 7 Kingston Cock Optional 6 16 8 Sea Water Filter Optional 6 17 9 Bilge Pump and Bilge Strainer Optional 6 18 CHAPTER 7 REDUCTION AND REVERSING GEAR KM3A 1 Construction 7 1 2 Shifting Device 7 7 3 Inspection And Servicing 7 12 4 Disassembly 7 22 5 Reass...

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Page 9: ... Air intake manifold Mist separator KM3P3 Torque limiter Dipstic clutch side Dipstic engine side Lube filter Fuel priming pump Fuel filter Fresh water pump Alternator Pressure cap Fresh water tank Exhaust manifold Mixing elbow Clutch handle Starting motor Seawater pump Printed in Japan A0A1015 0302 Printed in Japan A0A1015 0302 ...

Page 10: ... Air intake manifold Mist separator KM3P1 KM35P1 Dipstic clutch side Dipstic engine side Lube filter Fuel priming pump Fuel filter Fresh water pump Alternator Pressure cap Fresh water tank Exhaust manifold Mixing elbow Clutch handle Starting motor Seawater pump Printed in Japan A0A1015 0302 Printed in Japan A0A1015 0302 ...

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Page 12: ...tion Number of cylinders Bore stroke Displ acement Compression ratio Fire order Fuel injection pump Fuel injection timing b T D C Fuel injection pressure Fuel injection nozzle Power taka off Lubrication system Engine weight without marine gear dry Lubricating oi l capacity Effect max Starting system Dimensions with KM35P1 Cooling water capacity Fresh water Starting motor AC generator Overall lengt...

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Page 14: ... 2 36 3 1 6 Clock wise 0 3 0 35 0 45 0 5 SAE 30 API CC or CD KM3P3 15 Eqipped KM35P1 12 Eqipped Clutch Type mas Torque limiter Reduction ratio Forward Reverse Direction of rotation Forward viewed from stern Lubricating oil capacity min max Lubricating oil Printed in Japan A0A1015 0302 Printed in Japan A0A1015 0302 ...

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Page 19: ...5 4 φ10 5 4 φ 11 73 11 3 φ 52 φ 40 φ 100 φ 50 0 0 019 pcφ78 pcφ78 φ 100 35 PROPELLER SHAFT COUPLING OUTPUT SHAFT COUPLING 4 4 M8 TAPPEDHOLES DEPTH 12 p c φ 8 2 5 DIRECTION OF ROTATION DETAIL OF PULLY VIEW FROM ARROW A 530 240 240 247 5 22 5 φ 63 5 0 048 0 φ 134 445 70 4 φ 16 5 50 305 159 237 3 VIEW FROM ARROW B 1 8 1 3JH2 Series Chapter 1 General 3 Engine Outline 3JH25A 30A Printed in Japan A0A101...

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Page 23: ...ropeller curve curve Propeller power curve kW 350 300 250 200 150 400 20 15 10 5 0 1500 1700 1900 2100 2300 2500 2700 2900 3100 3300 Crankshaft speed min 1 1500 1700 1900 2100 2300 2500 2700 2900 3100 3300 Crankshaft speed min 1 1500 1700 1900 2100 2300 2500 2700 2900 3100 3300 350 300 250 200 150 100 400 Exhaust Gas Temp C Printed in Japan A0A1015 0302 Printed in Japan A0A1015 0302 ...

Page 24: ...eller power curve kW Specific fuel consumption g kW h 300 250 200 150 350 20 15 10 5 0 1500 1700 1900 2100 2300 2500 2700 2900 3100 350 300 250 200 150 100 400 Exhaust Gas Temp C 25 Crankshaft speed min 1 1500 1700 1900 2100 2300 2500 2700 2900 3100 Crankshaft speed min 1 1500 1700 1900 2100 2300 2500 2700 2900 3100 Printed in Japan A0A1015 0302 Printed in Japan A0A1015 0302 ...

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Page 28: ... RH φ28X t1 2 C1201T φ27X t4 RH φ28X t4 RH φ28X t4 RH φ25 4X t1 8 C1201T φ25 4X t4 3 RH φ25 4X t4 3 RH φ25 4X t4 3 RH φ4X t2 RH φ4 76X t0 7 STS φ6 35X t2 275 ST9 FUEL HIGH PRESSURE PIPE FUEL INJECTION NOZZLE OIL PRESSURE SWITCH LUB OIL FILTER CARTRIDGE TYPE PRESSURE CONTROL VALVE FUEL INJECTION PUMP MIXING ELBOW B FRESH WATER COOLER LUB OIL INLET FILTER MAIN BEARING TO CAM SHAFT SER WATER INLET TO...

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Page 61: ...2 27 6 7 7 8 6 7 7 8 729198 51320 3JH30A B451 0 95 1 05 2 5 1500 6 1000 3 3 20 20 200 200 11 5 1 25 11 5 1 25 1000 1000 60 70 56 66 60 70 56 66 325 325 1000 1000 I D mark Adjustment specs Nozzle type I D mark Injection starting pressure kg cm2 Fuel injection pipe ODφ IDφ L Top clearance Pre stroke mm Rated load Idling Starting No load Pump rpm N1 rpm Rack position R1 mm Measuring stroke St Injecti...

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Page 101: ... elbow Intake air silencer 4 1 1 3JH2 series Chapter 4 Intake and Exhaust System 1 Intake and Exhaust System 3JH25A 30A Intake system Printed in Japan A0A1015 0302 Printed in Japan A0A1015 0302 Exhaust system ...

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Page 121: ... 5 Lubrication System 1 Lubrication System Printed in Japan A0A1015 0302 Printed in Japan A0A1015 0302 3JH25A 30A Lubricating oil filter Oil return piper Oil pan Fuel injection pump lubricating pipe A B A B Fuel injection pump ...

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Page 126: ...apter 5 Lubrication System 3 Lube Oil Filter Printed in Japan A0A1015 0302 Printed in Japan A0A1015 0302 3JH25A 30A Lubricating oil filter Oil return pipe Oil pan Oil pressure regulator valve Filter bracket Cylinder block ...

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Page 136: ... 3 1 3JH2 series Chapter 6 Cooling Water System 1 Cooling Water System Printed in Japan A0A1015 0302 Printed in Japan A0A1015 0302 3JH25A 30A Mixing elbow Heat exchanger Sea water pump Kingston cock A A ...

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Page 181: ...ter of the thread spline are designed to give the greatest efficiency thus ensuring that the drive cone can be readily engaged or disengaged Helical gears are used for greater strength The intermediate shaft is supported at 2 points to reduce deflection and gear noise The clutch ease and mounting flange are made from an aluminum alloy of special composition to reduce weight It is also anticorrosiv...

Page 182: ... 33 C cable travel 76 2mm YANMAR made standard accessory YANMAR made standard accessory 100 78 4 1 0 5 Right side viewed from stern API CC SAE 20 30 0 35 0 5 3JH30A Clutch Forward Mode Reverse Propeller shaft mirr1 Forward min 1 Input shaft Forward Output shaft Reverse Control head Cable Clamp Cable connector Outer diameter mm Pitch circle diameter mm Connecting bolt holes mm Remote control Reduct...

Page 183: ...r with input shaft Output shaft Reverse large gear Idle gear Drive cone Forward large gear Shaft arrangement viewed from the stern Intermediate shaft Intermediate shaft Output shaft Model No of teeth No of teeth Reduction retio Zof Zif of forward small gear Zif of forward 18rge gear Zof KM3P1 KM3P3 KM35P1 25 59 59 25 2 36 23 60 60 23 2 61 1 3 2 Reduction ratio Forward Model No of teeth No of teeth...

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Page 193: ...ping powder 67 micron silicon carbide 280 2 Set the large gear on the output shaft with a needle bearing and then set the drive cone on the output shaft 3 Lap the large gear s cave and drive cone pushing them together by hand 4 Push and turn the large gear about 5 times both clockwise and counter clockwise 5 After lapping them wash them with washing oil The lapped parts should be cleaned completel...

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Page 221: ...Eng Oil P C W Temp Fuel Empty Glow Air heater Battery Switch Battery S or C Starter Battery Battery Switch 12V 12V Earth bolt Alternator Tacho sensor Eng Oil Pressure switch C W Temp switch WR WL YW 3R 5L B R 3B 2 1 3 F R L LB B YG YB O GW O R RG G r B R R B 3R 3L 3W RC LB YW WL WG GY RW Y G G Y W B P AC P1 P2 AR 30 G1 G2 17 LW LY L R Red B Black W White Y Yellow L Blue G Green O Orange Lg Light g...

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