Yanmar YSE8 Manual de usuario

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iIODEL

YSI

1

ENGINE I\ PHOTOCRAPHS

OUTST.{\DNG FE.{TLRES

GENER{L DESCRIPTTON

3.2 Po*er Take-off ShaftPulleys .. ..

PERIODICAL }LdII{TENANC E

FUEL ,\\D LUBRICATING OILS

t FuelOils

;. 1.1 Propert! requirements

byviscosity 7

-8

o'/-.u,(F",.^*.(r*/AJ,".,

CONTENTS cr/ol -4"!cl,( .

Page

OF YSE SERIES

Dlanos

5.2.2 Classification

5.2.3 Recommended

6. TROUBLESHOOTING .....,..,....,.,. 10

6.1 EngineDoes

\o1Start . .,.,.,........,...... 10

6.2 Difficult

Srafi-up ...,. ...,..,,

....

., 1l

6.3 Bad

ExhaustColor ....,...I2

. '=--,---6.4 Momentarl

High-speed

Relolution ... ... ,....,.. 12 '.

6,5 Hunting ...,..........

6.6 OutputDecrease

. ............. 13

6.? Knocking during Operation 13 ,

6.8 SuddenEngineStop ..,........... . 14 l

6.9 Lubricating

OilLeak ...... ......,....... 14 I

6.10

Fu€l

Oil

leak

... ...

-............... 14

6.11Water

Leak ...... ..... . 15

6,12 CoolingWaterFailure .. .......,. 15

6.13ClutchSlip

............. ................

WEARLIMIT OF EACH

MAIN PAR'T ... ..,........... TE

INSPECTIONAND sERVrcrNdoF MAIN p-{RTS .. ..-.-.-rih.-.. ........ t7

8;l Fuel InjectionPumpancl

Nozzle ....,. ,:,..,.. .,,,.. .. . 17

8.1.1 Fuelinjection

pump ......... 77

8.1.2 Fuelinjectionnozzle(throttleno2z1e1.,.,.,..,..................19

8.1.3 Air venting ...

.....

. 21

8.2 Cooling

Water

Pump .....,..22

8.3 CylinderHead .-..-.-...-.........-..24

,ta

Page

cting

Rod

Assembly .,............... 26

8.4

8.5

8.6

8.7

Piston and Conne

Cylinder Liner

Crankshaft andMain

ElectdcaI EquipmentBeafing Metal

8.7.

1 Stater

8.7.2 Generator 36

9. ADIUSTMENTS

9.1 Governor

Lever

9.1.1 Adjustment

procedure

9.1.2 Readjustment

procedure t

9.2 Inbke/ExhaustValve 39

'4r

9.2.1 Adjustment

procedure

._9.3 Fuel Injection Timing

9.3..1.. Checkinghints

" :'.' ","'-"_b "'_"_

9.3.2 Adjustment

procedure

DISASSEMBLY

10,1 Preparation

10.2 Serviceman'sKit

10.2.1 General

tools

10.2.2 Specialtools

10.2.3 Measuring

instruments

10.2.4 Others

10.3 Precautions

10.4 Cl

ul.ch

Disussemblj Prucedu-re

11,

12. STERN ARN,ANGEMENT

REASSEMBLY

11.1 Precautions

t. "-llkl =-4--

1. ENGINE IN PHOTOGRARHS

Eyenur {for

hosi ngenqine)

(only for electi..l startng)

Propeller

shaft

;uprinq

2.OUTSTANDING

FEATURES

OF YSESERIES

1. Its extra-compactness, light weight, andlarge outputpermit engineroom to be

miniaturized.

2. Wet tlpe single-disc clutch, andreduction/reversing gear offer very light forward/

backward change, easy andpositive operation, and outstandingdurability.

Selection of crankshaft-to-propeller shaft ratios: 2 : 1 and 3 : 1.

Selectionol starting systems: electric starting, coupledalso available with handle

starting, and handle stafiing with speed-up chain gearing (available to install on

either

boworstern

side).

5. All-speed gove-rnor, insterlocked \tith easy-to-operate, durable Yanmar-Dickel type

fuel injection pump. assures minimum load fluctuations andexcellent low-speed oper-

ation,

Rotary type cooling water pump feat.rring ample circulating water andsimple construc_

tion makestheengineseizure-free.

Flywheel enclosed in the cllrtch housingprovides safety to the operator.

Full sealedforced lubrication system saves oiling labor dudng operational mode,

andthereby increases working efficiency.

9. Constructional simplicity of component

parts makes the enginevery easy to operate,

maintaitr, andinspect.

'..-:

3. GENERAL DESCRIPTION

Each of Yanmar diesel engines, models YSE8andYSE12, comes equipped

with

clutch reduction gear, which togethei with a flywheel is totally enclosedin the flywheel

housing andthe clutch housing. The propeller shaft is run from the flywheel side.

The starter for electrical starting is directly mountedto the fly\rheel housingto

drive the ring gear of the nyl,heel For chain starting, the power take-olf shaft is

chain-connectedto the starting shaft located immediately abovethe cjlinder. The engine

is started b]'clockwise rotation on the stern side andby counter-clockwise rotation onthe

bo'i{side.

3,1 Construction

{

Part Description

& Specifications

1. CrI. bodr llonoblock casting of water jacket, crankcase and

oil pan.

2. Cyl, liner Wet tlpe made of special cast iron andcoatedwith

special anticorrosive paint.

3. Main

bearing

4. Cyl.

Sidecover side: precision kelmet metal with thin

backmetal.

Fl]'wheel side: Thick meta-I.

Gaskettfpe, part of monoblockincluding valve guides.

5. Intake/exhaust

valve Mushroomttpe.

6. Intake pipe lntak€

eneniatype

mad€of st€el.

7. Exhaust

silencer Round, expansiont!pe, or water injection type'

8. Valve drive system Tappet & valve push rod type. Parabolic suction/

exhaustcam with approachramp.

9. C

rankshaft Stampforged, with induction hardenedjournal, pin

andoil seal portions,

10. Flywheel Mountedto clutch, enclosedin flywheel housing-

11. Piston Made of aluminum alloj/, oval shaped.

12. Pistonrings Three compression

rings, oneoil scraper ring.

13. Piston

pin Float type.

Part Description & Speciacations

14, Connectingrod I-section, stamp forged.

15. Crankpin metal Drum type

16. Lube oil pump Trochoid pump, driven by camshaft.

17. Lubeoil strainers Iniet side: perforated steel t!?e.

Outlet side: auto-clean tlpe, full-flow passing tlTe.

18. Indicators Electric starting: hydraulic lamp

Manual startingr oil light

19. Lube oil circulation

chart nlet side strainer

rochoid pump

Outlet side strainer

Main bearing metal (flywheel side)

Valve rocker arm chamber

Mainbearing

metal(gear

caseside

Crankpin metal

20. Coolingwater pump Rotary type (belt-driven from power take-off shaft)

21. Fuel itrjectio! pump Yanmar-Dickel type pump

22. Fuel injection nozzle Pintle nozzle

Fuel strainer FiIter paper

24. Fuel tank Steel plate

25. Governor Centritugal, all-speed tJpe

Part Description & Specifications

26. Governor

remote

control device Remote control wiTe, steel lever

27. Decompressionremote

control Remote control wire, steel lever

28. Electric starting

devic€ Starter (!iog geartlpe)

Output:1.0KWat 12

Battery:40-?0

(nomirlal)

29. Manualstarting

de\rice Speed-upchain

Speed-upratio:

(onstern or bow side)

2.07

(YSE8),2.91

(YSE12)

30. Rever8ing clutch Wet t ?e siDgleplate disc clutch

31. Reduction gear Constantmesh spur gear type

Reduction latio: 2 : \, 3 : 1

32, Power take-off shaft

pulley Spur gear-driven

alternator and forfrom crank gear with pulleys

cooling water pump. lor

-1I

3.2 PowerTakeoff ShaftPull.ys

The outside pulley is for the alternator and the inside pulley for the cooling water. If the

alteinator is not attached, the outside pulley can be used as desied to drive a bilge pump,

(Remark) The flexible mounting being on engine,not using P.T.O. shaft.

-5

Model YSE8 YSE12

PTO shaft rotation speed/enginespeed 4100/3200

rpm 3380/30oo

rpm

Outside diameter oI pulley 90

mm 110mm

V belts Single HM type Single

HM tYP€

PTO max. permissible outputpower r-t.s/32o0 HP/rpt! 2-3l3ooo

HPl4m

4. PER]ODICALMAINTENANCE

, -**r

No. Hours of opemtion

100 !verY

250 500

IFuelOil 1. Checktlel oil level, and

supply luel, if necessary. a

2. Discharge drainage {rom a

L Clern fuelstr3iners. o

4. Renes the fuel st.liner

filter elements. a

21. Check lube oil levels in

cftnkcase and reduction

Sear case, anosupprJ

lube oil, if necessary. a

2. Lubricate the sarting shaft,

chaih. and other Darts. a

3. Tun tbe lube oil shaine.

L O"e.h^l tn" Itb..il aa

6ReneN

crankcaselubeoil.

Renan

Clnrch-aa-nb Ia

3l. Dis.harge

cooiing

qarer

alte. ottrarion in cold a

2. Chec\ the recirculated

condition of c@ling wate.. a

4l. Checkfuel injeciion

(iniection noise). a

2. Adjust th€ govemor

3, Check fuel injection timing.

t. al@n the;;;,Ie. a

5cylinder Eead l. RetightcD

the cvlinder a

2. Adjustih€ intake/exhausr a.

3. clean the intemal surfaces

of combustion chamber. a

l. Clean the pre-cohbuslion a

5. Checkth€mtake/exhaust a

6. Cbeckvalve rocker alrn and o

Rrnc

1. Wash the breather valve. a

2. Checkthe belt tensions

(coolingsaler pump, a

3. Renewthe anticorrosive a

4. Check the piston and the

.ing. a

5. FUEL AND LUBRICATINGOILS

To the engine, fuel oil is foodand lubricating oil is blood. Mis-handling might cause

unexpected

enginetrouble. The efficiency of the Yanmar enginewill dependupon strict

adherenceto these instructions andrecommendati

ons,

It is the salesman's or serviceman's duty and mission to urge the user to follow them.

5.1 FuelOils

5.1.! Propertyroquirsmsnts

il\ IIidh.afanp Tqfind

fl loor ignitability of fuel oil results in a ignition lag, causing difficult starting or

\l knockine.

(2) Low sulphur content

Sulphur containediD fuel oil whenburned is combinedwiti water to produce

sulphuric acid v,/hich

corrodes metallic parts,

(3) No dust or moisture content

Dust andmoisture containedin fuel oil can causefaster wear or sticking of the

plunger of fuel injection pump andinjection nozzle.

(4) Appropdate viscosity

Fuel viscosity has a relation to the condition of injection, It shouldbe such that the

pluoger

andthenozzlevalvewill beproperly lubricated.

5.r.2 R*mmend b.ands

Supplie. BraIto

SHELL Shell Diesoline (or local equivalent)

CALTEX Caltex

Diesel

Oil

MOBIL Mobil Diesel oil

ESSO Esso

DieselOil

B. P. (British Petroleum) B.P. Diesel OiI

LubricatingOils

5.2.1 Functions

(1) Lubrication--reduces friction andwear ou sliding surfaces.

(2) Cooling--carries awaycombustion and{riction heat.

.,n

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