3JH2 Series 2000. 3. 10 MARINE DIESEL ENGINE - Varen4U

3JH2 Series

2000. 3. 10

MARINE DIESEL ENGINE

SERVICE MANUAL

0000A0A1015-9112

series

Publication No. A0A1015

Page No 1

Manual Name Service Manual for Marine Diesel Engine

History of Revision

Engine Model : 3JH2 series

Number ofrevision

Reason for correction Corrected byOutline of correctionDate of

revisionCorrection item

No. (page)

1st Apr. 2001

2nd Feb. 2003

●Crank shaftV-pulley bolttighteningtorque

●Clutch levercontrol cableconnectlion.

●Addthe model3JH25A &3JH30A

10-32

8-3

1-3, 10-31

QualityAssuranceDept.

●Added the standard V-pulley(material: casting iron) tighteningtorque and general use nuts & boltstightening torque.

●Added the tightening torque of nutfor 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 ● Added the Lube Oil Filter figure ● Added theSea water line flgure ● Added the Marine Gear Models

KM3P1,KM3P3,KM35P1 ● Added the Wiring diagrams

1-2-1, 1-2-21-3-1, 1-4-11-8-11-11-1, 1-11-21-14-13-1-1

4-1-1

5-2-15-6-16-3-17-29~7-56

9-4-1

QualityAssuranceDept.

Printed in JapanA0A1015-0302


CONTENTSCHAPTER 1 GENERAL

1.Exterior Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12.Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33.Engine Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54.Performance Curves . . . . . . . . . . . . . . . . . . . . . . . 1-105.Piping Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

CHAPTER 2 BASIC ENGINE PARTS1.CylinderBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12.Cylinder Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43.Piston and Piston Pins . . . . . . . . . . . . . . . . . . . . . . 2-114.Connecting Rod . . . . . . . . . . . . . . . . . . . . . . . . . . 2-155.Crankshaft and Main Bearing . . . . . . . . . . . . . . . . 2-186.Camshaft and Tappets. . . . . . . . . . . . . . . . . . . . . . 2-217.Timing Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-248.Flywheel and Housing . . . . . . . . . . . . . . . . . . . . . . 2-26

CHAPTER 3 FUEL INJECTION EQUIPMENT1.Fuel Injection Pump Service Data . . . . . . . . . . . . . . 3-12.Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23.Disassembly Reassembly and Inspection of Fuel

Injection Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-114.Adjustment of Fuel Injection Pump and Governor . . 3-215.Fuel Feed Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-276.FuelInjection Nozzle . . . . . . . . . . . . . . . . . . . . . . . 3-297.Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-338.Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-359.Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37

10.Fuel Tank (Optional). . . . . . . . . . . . . . . . . . . . . . . . 3-38

CHAPTER 4 INTAKE AND EXHAUST SYSTEM1.Intake and Exhaust System . . . . . . . . . . . . . . . . . . 4-12.Turbocharger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33.Mixing Elbow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

CHAPTER 5 LUBRICATION SYSTEM1. Lubrication System . . . . . . . . . . . . . . . . . . . . . . . . . 5-12.Lube Oil Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33.Lube Oil Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-64.Oil Pressure Control Valve . . . . . . . . . . . . . . . . . . . 5-85.Lube Oil Cooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-96.Piston Cooling Nozzle . . . . . . . . . . . . . . . . . . . . . . 5-107.Rotary Waste Oil Pump (Optional) . . . . . . . . . . . . . 5-11

CHAPTER 6 COOLING WATER SYSTEM1.Cooling Water System . . . . . . . . . . . . . . . . . . . . . . 6-12.Sea Water Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43.Fresh Water Pump . . . . . . . . . . . . . . . . . . . . . . . . . 6-74.Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . 6-105.Pressure Cap and Sub Tank . . . . . . . . . . . . . . . . . 6-126.Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-147.Kingston Cock (Optional) . . . . . . . . . . . . . . . . . . . 6-168.Sea Water Filter (Optional) . . . . . . . . . . . . . . . . . . 6-179.Bilge Pump and Bilge Strainer (Optional) . . . . . . . 6-18

CHAPTER 7 REDUCTION AND REVERSING GEARKM3A

1.Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12.Shifting Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-73.Inspection And Servicing . . . . . . . . . . . . . . . . . . . . 7-124.Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-225.Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25

KM3P1,KM3P3,KM35P11.Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-292.Shifting Device . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-353.Inspection And Servicing . . . . . . . . . . . . . . . . . . . . 7-404.Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-485.Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-53

CHAPTER 8 REMOTE CONTROL1.Remote Control System . . . . . . . . . . . . . . . . . . . . . . 8-12.Remote Control Installation . . . . . . . . . . . . . . . . . . . 8-23.Remote Control Inspection . . . . . . . . . . . . . . . . . . . 8-54.Remote Control ADJUSTMENT. . . . . . . . . . . . . . . . 8-65.Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13

CHAPTER 9 ELECTRICAL SYSTEM1.Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12.Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-53.Starter Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-84.Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-245.Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 9-346.Warning Devices . . . . . . . . . . . . . . . . . . . . . . . . . . 9-367.Air Heater (Optional) . . . . . . . . . . . . . . . . . . . . . . . 9-398.Electric Type Engine Stop Device (Optional) . . . . . 9-409.Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-42

10.AIternator 12V/80A(Optional) . . . . . . . . . . . . . . . . . 9-45

CHAPTER 10 DISASSEMBLY AND REASSEMBLY1.Disassembly and Reassembly Precautions . . . . . . 10-12.Disassembly and Reassembly Tools . . . . . . . . . . . 10-23.Disassembly and Reassembly . . . . . . . . . . . . . . . . 10-94.Bolt/nut Tightening Torque. . . . . . . . . . . . . . . . . . 10-325.Test Running . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-33



1-2-1

3JH2 Series

Chapter 1 General1. Exterior Views

1-3 3JH25A/30A

With KM3P3

Operating side

Operating side

Fuel injection pump

Air intake manifoldMist separator

KM3P3

Torque limiterDipstic (clutch side)

Dipstic (engine side)Lube filter

Fuel priming pump

Fuel filter

Fresh water pump

Alternator

Pressure cap

Fresh water tankExhaust manifold

Mixing elbow

Clutch handleStarting motorSeawater pump



1-2-2

3JH2 Series

Chapter 1 General1. Exterior Views

With KM3P1/ KM35P1

Operating side

Operating side

Fuel injection pump

Air intake manifoldMist separator

KM3P1KM35P1

Dipstic (clutch side)

Dipstic (engine side)Lube filter

Fuel priming pump

Fuel filter

Fresh water pumpAlternator

Pressure cap

Fresh water tankExhaust manifold

Mixing elbow

Clutch handleStarting motorSeawater pump



3JH2 Series

Chapter 1 General2. Specifications

1-3-1

Model Unit 3JH25A

Vertical 4-cycle water cooled diesel engine

Direct injection

Normal aspiration

3

82× 86

1.303

3JH30A

___

___

___

___

mm

m/sec. 9.5 8.6

kW(PS)/rpm20.2/3300

(27.5/3300)

24.3/3000

(33.0/3000)

0.539 (5.50) 0.713 (7.27)

9.2

18.1

1 — 3 — 2 — 1

YPES-CL

19±1

19.6±0.5(200±5)

Hole type

At Flywheel side

Forced lubrication with trochoid pump

DC 12V-1.8kW

12V-35A

730

185

770

190

545

680

0.9 / 7.0

4.4

0.8

Constant high temperature fresh water cooling

Fresh water : Centrifugal pump

See water : Rubber impeller pump

Counter-clock wise

viewed from stern

8.3

18.4/3200

(25/3200)

22.1/2900

(30/2900)

0.506 (5.016) 0.670 (6.83)

MPa(kgf/cm2)

Type

Combustion system

Aspiration

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 watercapacity

(Fresh water)

Starting motor

AC generator

Overall length

Overall width

Overall height

Fresh water tank

Sub tank

Cooling system

Direction of rotaion (Crankshaft)

One hour rating

output

(DIN6270B)

flywheel output

Continuous rating

output

(DIN6270A)

flywheel output

Output/crankshaft speed

Brake mean effectivepressure

Piston speed

m/sec.

___

___

___

degree.

MPa(kgf/cm2)

___

___

___

V-kW

V-A

mm

mm

mm

kg

___

___

kW(PS)/rpm

MPa(kgf/cm2)

Output/crankshaft speed

Brake mean effectivepressure

Piston speed



3JH2 Series

1-4-1

Chapter 1 General2. Specifications

marine gearsystem

Model KM3P1

12kg

Not Eqipped

Cone clutch

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



442.

5

JOINT φ8 FOR FO RETURN

JOINT φ8 FOR FO INLET

28.8

701.3

730.1

180.6

183.8

AHEAD

ASTERN

309.

1

MIXING ELBOW PT 11/4

237.

568

0

33.5

31.5

6.5

4.5

SO

LE P

LAT

E

543278 265

190.5

93 95480

119.

5

SEA WATER INLET φ26

7

φ50＋0.025

0

φ22

7.54-φ10.54-φ117311 3

φ52

φ40

φ10

0

φ5

0 0

－0.019 pc

φ78pcφ78

φ10

0

35

(PROPELLER SHAFT COUPLING) (OUTPUT SHAFT COUPLING)

4

4-M8 TAPPEDHOLES(DEPTH 12)

pcφ

82.5

DIRECTION OF ROTATION

DETAIL OF PULLY (VIEW FROM ARROW A)

530

240

240

247.

5

22

5

φ63

.5＋0.048

0

φ13

4

445

70 4-φ16.5

50

305 159237.3

(VIEW FROM ARROW B)

1-8-1

3JH2 Series

Chapter 1 G

eneral3. Engine O

utline

3JH25A/30A

Printed in Japan

A0A

1015-0302P

rinted in JapanA

0A1015-0302

1-11-1

3JH2 series

Chapter 1 General4. Performance Curves

3JH25A Performance Curve

Crankshaft speed (min-1)

Specific fuel consumption

Spe

cific

fuel

con

sum

ptio

n (g

/kW

-h)

Exhaust Gas Temp.

Propeller curve curveP

rope

ller p

ower

cur

ve (k

W)

350

300

250

200

150

400

20

15

10

5

01500 1700 1900 2100 2300 2500 2700 2900 3100 3300


1500 1700 1900 2100 2300 2500 2700 2900 3100 3300


1500 1700 1900 2100 2300 2500 2700 2900 3100 3300

350

300

250

200

150

100

400

Exh

aust

Gas

Tem

p. (°C

)



1-11-2

3JH2 series

Chapter 1 General4. Performance Curves

3JH30A Performance Curve


Specific fuel consumption

Exhaust Gas Temp.

Propeller curve curve

Pro

pelle

r pow

er c

urve

(kW

)S

peci

fic fu

el c

onsu

mpt

ion

(g/k

W-h

)

300

250

200

150

350

20

15

10

5

01500 1700 1900 2100 2300 2500 2700 2900 3100

350

300

250

200

150

100

400

Exh

aust

Gas

Tem

p. (°C

)

25


1500 1700 1900 2100 2300 2500 2700 2900 3100

Crankshaft speed (min-1)1500 1700 1900 2100 2300 2500 2700 2900 3100



PT1 1/4

4520

φ53EXH.

GAS

DETAIL OF PART B

A WATER

1-14-1

3JH2 series

Chapter 1 G

eneral5. Piping D

iagrams

3JH25A

/30A

Marks of PIPING NAME

RUBBER HOSE

STEEL PIPE

COPPER PIPE

UNION SCREW JOINT

FLANGE JOINT

EYE JOINT

INSERTION JOINT

DRILL HOLE

COOLING FRESH WATFR PIPING

COOLING SEA WATFR PIPING

LUB.OIL PIPING

FUEL OIL PIPING

MIST PIPE

R H

SGP

STS

C1201T

FUEL OVERFLOW

FUEL FEED PUMP

FUEL OIL INLET

φ7X t3 RH

φ7X t3 RHφ7X t3 RH φ7X t3 RH

φ7X t3 RH

φ4X t2 RH

φ28X t1.2 C1201T

φ27X t4 RH

φ28X t4 RH

φ28X t4 RH

φ25.4X t1.8 C1201Tφ25.4X 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 OIL PAN

FUEL OIL FILTER (CARTRIDGE TYPE)

HOT WATER CONNECTION INLET

COOLING WATER PUMP (FRESH WATER)

HOT WATER CONNECTION OUTLET

LUB. OIL PUMP

THERMOSTAT

FROM CYLINDER HEAD

(SEA WATER)COOLING WATER PUMP

Printed in Japan

A0A

1015-0302P

rinted in JapanA

0A1015-0302


3-1-1 Printed in JapanA0A1015-0302

3JH2 series

Chapter 3 Fuel Injection Equipment1. Fuel Injection Pump Service Data

Item Engine

Assemble codePart No 729198-51300

3JH25A

B450

0.95～1.05/2.5

1650

6

1000

Engine spec. Cal. Spec. Engine spec. Cal. Spec.

150P244HCO DN-12SD12 150P244HCO DN-12SD12

200～210 165～175 200～210 165～175

φ6×φ1.8×360 φ6×φ2.0×600 φ6×φ1.8×360 φ6×φ2.0×600

21.5 28.2 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)

Injection volume (cm3)

Non unifomity (%)

Pump rpm:N2 (rpm)

Rack position:R2

Pump rpm:N3 (rpm)



Non uniformity (%)

Pump rpm:N4 (rpm)

Rack position (mm)



Mixing elbow

Intake air silencer

4-1-1

3JH2 series

Chapter 4 Intake and Exhaust System1. Intake and Exhaust System

3JH25A/30A

Intake system



Exhaust system

5-2-1

3JH2 series

Chapter 5 Lubrication System1. Lubrication System



3JH25A/30A

Lubricating oil filter

Oil return piper

Oil pan

Fuel injection pumplubricating pipe

A

B

A

B

Fuel injection pump

5-6-1

3JH2 series

Chapter 5 Lubrication System3. Lube Oil Filter



3JH25A/30A

Lubricating oil filter

Oil return pipe

Oil pan

Oil pressure regulator valve

Filter bracket

Cylinder block

6-3-1

3JH2 series

Chapter 6 Cooling Water System1. Cooling Water System



3JH25A/30A

Mixing elbow

Heat exchanger

Sea water pump

Kingston cock

A

A

7-29

3JH2 series

Chapter 7 Reduction and Reversing Gear1. Construction



Marine Gear Models

KM3P1, KM3P3, KM35P1for Engine Models 3JH25A /3JH30A

1. Construction1-1. Construction

These clutches are a cone-type, mechanically operated

clutch.

When the drive cone (which is connected to the output

shaft by the lead spline) is moved forward or backward, its

taper contacts with the large gear and transfers power to

the output shaft.

The construction is simple when compared with other-

types of clutch and if serves to reduce the number of com-

ponents, making for a lighter, more compact unit which

can be operated smoothly. Although it is small, the power

transmission efficiency is high even under a heavy load.

Its durability is high and it is also reliable because high

grade materials are used for the shaft and gear, and. a

taper roller bearing is incorporated.

Power transmission is smooth because connection

with the engine is made through the damper disc

● The drive cone is made from special aluminum bronze, which has both higher wear-resistance and durability. The drive cone is connected with the output shaftthrough the thread spline. The taper angle, diameter ofthe drive cone, twist angle, and diameter of the threadspline, are designed to give the greatest efficiency, thus ensuring that the drive cone can be readily engaged ordisengaged.

● Helical gears are used for greater strength.The intermediate shaft is supported at 2 points toreduce 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 anticorrosive against seawater.● As the damper disc is fitted to the input shaft, power can

be transmitted smoothly. ● There is small clearance between the dipstick and the

inside of the dipstick tube. A small hole in the dipstick

works as a breather. ● when the load on the propeller is removed, the engage-

ment of the drive cone and the large gear is maintained

by the shifter and V-groove of the drive cone.

Even when the drive cone's tapered area and V-groove

are worn, this engagement is maintained by the shift

lever device and accordingly no adjustment of the

remote control cable is required. ● The cup spring on the rear of the larger gear absorbs

rotational fluctuations and stabilizes the engagement of

the drive cone and the larger gear.

Thus, the durability of the cone against wear is enhanced.

NOTE:

KM3P3 marine gear differs from KM3P1 as follows. ● Torque !imiter applied to KM3P3.

KM35P1 marlne gear differs from KM3P1 as follows. ● Output shaft dia. 28mm. (KM3P1 : 25mm). ● Drive corn the same as the one for KM4A marine gear.● Marine gear oil reserve capacity up.

0.5L (0.35L KM3P1 )

Reduction ratio No. of blade Diameter of the propeller Moment of inertia N-m2 Material

3 450 1.49(0.15)2.36

4 425

3 470 Bronze

2.61 4 440 1.86(0.19)

4 460

7-30

3JH2 series


For engine models 3JH25A

KM3P1 KM3P3 KM35P1

12 15 12

Constant mesh gear with servo cone clutch (wet type)

2.36 2.61 2.36 2.61

3.16 3.16 3.16 3.16

1356 1226 1229 1111

Counter-clockwise, viewed from stern

Clockwise, viewed from stern

Counter-clockwise, viewed from stern

Single lever control

Morse. 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

Reduction ratio

Position of shift lever

Output shaft coupling

Direction of rotation

Lubricating oil

Lubricating oil capscity ( )

Dry mass (kg)



1.2 Specifications

Note:

Torque limiter should be installed on KM3P3No torque limiter installed on KM3P1 & KM35P1

(mm) (kg-m2=GD2 )

7-31

3JH2 series




1-3 Power transmission system

1-3.1 Arrangement of shafts and gears

Idle gear

Forward small gear with input shaft

Forward small gear of input shaft

Reverse small gear of input shaft

input shaft

Large gear of output shaft

Reverse small gear with input shaft

Output shaft

Reverse large gear

Idle gear

Drive cone

Forward large gear

Shaft arrangementviewed from the stern

Intermediate shaft

Intermediate shaft

Output shaft

Model No. of teeth No. of teeth Reduction retio Zof /Zifof forward small gear Zif of forward 18rge gear Zof

KM3P1, KM3P3, KM35P125 59 59/25 = 2.36

23 60 60/23 = 2.61

1-3.2 Reduction ratio

Forward

Model No. of teeth No. of teeth No. of teeth Reduction ratio Zi/Zir・Zdr/Ziof reverse small gesr Zif of intemediate shaft gear Zi of reverse large gear Zdr

KM3P1KM3P3 19 26 60 60/19 = 3.16KM35P1

Reverse

7-41

3JH2 series

Chapter 7 Reduction and Reversing Gear3. Inspection and Servicing



NOTE : When dismantled, the forward of reverse direc-tion of the drive cone must be clearly identified.

(4) lf the wear of the V-groove of the drive cone is exces-sive, replace the part.

NOTE : When replacing the drive cone, the new cone and forward large gear and reverse large gear must be lapped prior to assembly.The lapping procedure is described below.

3-5-1 Lapping Procedure for Drive Cone

(1) Coat the lapping powder onto the cave of the clutch gear (Lapping 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 outputshaft.

(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 completely.

NOTE：● Do not mix the combination of the lapped parts. The washing oil should be changed frequently inorder to prevent residual powder being left on theparts.When assembling the drive cone, be sure to check its alignment. The larger chamfering face should be on the forward large gear side.

mm

Standarddimensions

Dimensions KM3P1KM3P3

KM35P1

Limiteddimensions

32.7-33.3 32.4

29.25-29.75 28.1

9-4-1

3JH2 series

Chapter 9 E

lectrical System1. Electrical System

Printed in Japan

A0A

1015-0302P

rinted in JapanA

0A1015-0302

3JH25A

/30A

Tacho with Hour meter

Buzzer stop

Buzzer

Illumination switch

Starte switch

Fuse 3A

B

B

A

A

Wire harness

Instument panel

ChargeEng. 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

BR3B

21

3

F

RL

LB

BYG

YB

O

GW

O

RRGG r B

R RB

3R3L

3WRC

LB

YW

WL

WG

GY

RWY

G

G

Y

W

B

＋－ P

＋－

＋－

ACP1

P2 AR

30

G1G2

17

LWLYL

R RedB BlackW WhiteY YellowL BlueG GreenO OrangeLg Light greenLb Light blueBr BrownP PinkGr GrayPu Purple

Color coding

3JH2 Series 2000. 3. 10 MARINE DIESEL ENGINE - Varen4U

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Transcript of 3JH2 Series 2000. 3. 10 MARINE DIESEL ENGINE - Varen4U