欢迎来到天天文库
浏览记录
ID:40370280
大小:4.71 MB
页数:115页
时间:2019-08-01
《Engine Mechanical(1)》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、EM-1ENGINEMECHANICAL-CO/HCCO/HCINSPECTIONEM0KQ-07HINT:ThischeckisusedonlytodeterminewhetherornottheidleCO/HCcomplieswithregulations.1.INITIALCONDITIONS(a)Theengineisatnormaloperatingtemperature.(b)Aircleanerisinstalled.(c)Allpipesandhosesoftheairinductionsystemarecon-nected.(d)Allac
2、cessoriesareswitchedOFF.(e)Allvacuumlinesareproperlyconnected.HINT:Allvacuumhosesshouldbeproperlyconnected.(f)SFIsystemwiringconnectorsarefullyplugged.(g)Ignitiontimingissetcorrectly.(h)Transmissionisinneutralrange.(i)TachometerandCO/HCmeterarecalibratedbyhand.2.STARTENGINE3.RACEENG
3、INEAT2,500RPMFORAPPROX.180SECONDS4.INSERTCO/HCMETERTESTINGPROBEATLEASTCO/HCMeter40cm(1.3ft)INTOTAILPIPEDURINGIDLING5.IMMEDIATELYCHECKCO/HCCONCENTRATIONATIDLEAND/OR2,500RPMHINT:Whenperformingthe2mode(2,500rpmandidle)test,followthemeasurementorderprescribedbytheapplicablelocalregu-lat
4、ions.A055102004LANDCRUISER(RM1071U)Author:Date:1574EM-2ENGINEMECHANICAL-CO/HC6.TROUBLESHOOTINGHINT:IftheCO/HCconcentrationdoesnotcomplywiththeregula-tions,performtroubleshootingintheordergivenbelow.Seethetablebelowforpossiblecauses,andtheninspectandcorrecttheapplicablecausesifnece
5、ssary.COHCProblemsCausesNormalHighRoughidle1.Faultyignitions:IncorrecttimingFouled,shortedorimproperlygappedplugs2.Incorrectvalveclearance3.Leakyintakeandexhaustvalves4.LeakycylindersLowHighRoughidle1.Vacuumleaks:(fluctuatingHCreading)PCVhosesIntakemanifoldThrottlebodyBrakeboo
6、sterline2.LeanmixturecausingmisfireHighHighRoughidle1.Restrictedairfilter(Blacksmokefromexhaust)2.FaultySFIsystems:FaultypressureregulatorDefectiveECTsensorFaultyECMFaultyinjectorsFaultythrottlepositionsensorFaultyMAFmeter2004LANDCRUISER(RM1071U)Author:Date:1575EM-3ENGINEMEC
7、HANICAL-COMPRESSIONCOMPRESSIONINSPECTIONEM0KR-09HINT:Ifthereisalackofpower,excessiveoilconsumptionorpoorfueleconomy,measurethecompressionpressure.1.WARMUPANDSTOPENGINEAllowtheenginetowarmuptothenormaloperatingtempera-ture.2.REMOVESPARKPLUGS(SeepageIG-1)3.CHECKCYLINDERCOMPRESSIONPRES
8、SURECompression(a)I
此文档下载收益归作者所有