Yangdong Co. Y90 Series Spécifications

~®SERIESY90DIESELENGINEOPERATION&MAINTENANCEMANUALVANGOONG co., LTO.THEPEOPLE'SREPUBLICOFCHINA

~900rpm5%--10%ill.Main te4:hn.ieal DataofDiesel Enline1.Valve lash(mm)Intake valve(cold)0.30-0.35Exhaust valve(cold)0.35-0.402. sinkageofvalve(mm)0.7-

IV'.•~itClearanceandWear{.limitofMainParts(see Table 3)Table 3DesignationIIAssenbly limit'Wearlinlit(mm) (mm)Connectingrodjournalandconnecti

SECTION2. OPERATIONI . Fuel Oil ,Lube OilandCoolineWaterI.FueloilUsers can select the proper~adeoffuel oilaccrdin~tothe local ambient temperature.&apo

II.Preparation beforeStartineI.Checktheti~htnessandreliabilityofaliconnectin~parts.Checkcontrol levers (speedcontrolleverandstoppin~lever)toseewhether

IV. Operatin21.00notloadtheengineuntilthecoolingwatertelnperature isover50°Candthe lube oiltemperature isover40"C.Theengineshouldnotbeoperatedund

SECTION3.MAINTENANCEForreliable engine operation with lesswearandlonger service life,allmaintenanceworkmustbecarriedoutasfollows.I . RoutineMaintenanc

6.Checkthetensionofthefanbelt,andreadjustitifnecessary.7.FillthenippleofcoolingwaterpumpbearingwithZG-4calciumbasedgreasewithagreasegun.8.Cleanoutthed

8.Check whether the thermostat is in good order.Examinethewater droppingoutfrom aweep holeofthe water pump.It is necessary to renew the waterseal,iffl

4.Pour some dehydrated oil into cylinder through injector - assembled holes on thecylinder head,and turn the crankshaft to make sure that the piston,p

SECTION.4 ENGINE ADJUSTMENTFig. t Adjustmentofvalve lashes3. slip a feeler gaugebetweenth,-:~rocker arnlandthetipoftheintakeorexhaustvalve steins ofth

FOREWORDSeries Y90 multi-cvlinder ditsel eneinesareideal power units for lieht vehicle,aeromotor.smalltractor,airconditionerinbus,eenerator setanden2i

2.Checkthetimingmarkonthe inspectionwindowofflywheelhousingtoseewhetheritaligns withthecorrect gradulatedmarkofspecifiedadvancedinjection angle on the

checka fauly iniector,Le.loosenthenutsofiniectionpipefromtheinjectorofeverycylindersuccessively,andobservetheexhaustsmoke.Whenthe cyl1nderwiththefault

guidingsurfaceoftheneedlevalveandnozzlebodyisnotsmoothenough,itmaybelapped witha little bitofclean fuel oil,thencleanoffanymetal particulates incleanf

+-e--+Fig. 4 Tightening sequenceofcylinder head boltsSECTION5.CONSTRUCTIONOFDIESELENGINEI .CylinderHeadWhenassembling,cylinder head is fixedonthecylin

.Afier service for aCheckthevalverecoITunended adjustingreplacingthevalveseatshouldbeconsidered.andtrequently.T'hcperiodlasheslongregrinding many

thedieselengine,flushall lubeoilpassages,andbesurethattheyarecleanandunblocke~.Allpassageplugsshouldbesealedreliablyandleakproof.Themainbearingsareofc

Checktheringendgapbeforeassemblingthepiston ring.Themethodmeasuringthisgapisrecommendedasfollows:Pressdownthepiston ringevenlyinto thecylinderliner by

marksonboththeconnecting- rodandconnecting-rodcapinordertoavoidmakingmistakes.Theconnecting-rodbearingshell ismadeofsteel with high tinaluminiumalloy.

Thereis athrustflangeatthefrontendofcamshaft,andathrustplateofcamshaftis locatedatthefrontendtocontrolthecamshaftaxial moving.Thelubeoil isdeliveredto

Special tools are necessary for dismantlingorassembling the crankshaft timing gear.Thecamshaft timinggearcanbegotoutbytwoboltsM8onthegearspokewhich ar

Warning Notice1.Itisstrictly forbiddentouse inferior and dirty diesel fuelorlube oil. Please chooseto use fuelandlube oil with stipulatednumberaccordi

Theinjectionpumphas been calibrated by themanufacturer.Besurenottodismantleitatwill.When the dismantlement,repairmentandadjustmentarerequired,it isfor

the safety valve while the oil filter loses the functionoffiltration,so it is necessary for thecartridge to be cleanedorreplaced regularly according t

-12345F'ig.12 Cooling system1.Radiator2. Thermostat 3. Cooling fan4.WaterpumpS.lnletwaterpumpIX .Coolin!System'Thecoolingsystemisa forcedcir

x .ElectricSysteml~heelectric system is composedofthe battery,starting motor,dynatno,electrothennalplug'!starting button and instrulnents,ctc...a

SECTION6.FAULTSANDREMEDIESFORDIESELENGINEI.HardorrefusetoStart(seeTable4)Table 4Causes1.Fuelfiltersandfuelpipelinesbolcked.2.Airtrappedinfuelsystem.3.

III.Smokinl!Exhaust(see Table 6)Table6Causes1.Engines overloaded.2.Fuel injectors not well atomized3.Fuel unqualified4.('ombustion incolnpleteRem

VI.Overheatin2ofEn2ine(seeTable9)Table 9CausesI.Temperatureofcooling water too high;(1)Insufficient cooling water or vapor lockinwater pipes.(2)Bad wo

MANUFACTURINGLICENSE:XK06-205-00141PRODUCTSTANDARD:0/321284JCA06-2002LICENSEAPPROVALDATE:JULY2,2003

CONTENTSI . Configuration and Installation DimensionsofModel YSD490Q Diesel Engine III.Performance CurvesofModel YSD490Q Diesel Engine...•...

v .Camshaft" 5-5VI. Gear transmission system 5-6\'lI. Fuel and governing system " 5-7VIU• [..ubricating system 5-8IX. Cooling system···

Exhaustoutletcenterline1:2~60~46215,',View~530214.7i201=~----,fl4I13417Y----r-n9Vie",B~116H1r:'O~l135j)4.5I~blxhdUSfviJaetCeftl~meConne

ge(glkw·h)2501230...- ...- ...--...-...---.--...- ...- ...Me(N·m)160ISO35251600'180Q.2000 2200 2400 2600 2800 3000 3200n.Performanc

SECTION1.DIESELENGINESPECTFICATIONSANDTECIINICALDATAI .SpecificationsofDiesel Engines (see Table1)TabletModelYSD490QNumberofc;"finder.Bore(mm)490

n.S~·ificationofMain Accessories(see Table 2)Table 2Designation6NilFISpecificationYSD490Q--------,l--Type...SeriesIorBQpumpFuelinjectionr==~ovemor_all