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1、4102BZLQEngineattentionpointsDongfengChaoyangDieselCo.,Ltd(2008)4102BZLQEngineApplicationAppliedtoJACHFC1048,1061MediumbusesHFK6603,67304102BZLQEngineApplication4102BZLQEngineApplicationImportanttighteningtorquewhenyouassembleenginesMainbearingcapbolttighteningtorque216-235N.m(22-24kgf.m)1
2、60-174lbf.ftCylinderheadbolttighteningtorque118-127N.m(12-13kgf.m)87-94lbf.ftCylinderheadbolttighteningsequenceConnectingrodtighteningtorque118-127N.m(12-13kgf.m)87-94lbf.ftCrankshaftfrontnutTighteningtorque392-441N.m(40-45kgf.m)290-326lbf.ftFlywheelTighteningtorque196-216N.m(20-22kgf.m)14
3、5-160lbf.ftFlywheelFlywheelhousingTighteningtorque127-147N.m(13-15kgf.m)94-109lbf.ftFlywheelhousingCamshaftgearpressplateboltTighteningtorque108--118N.m(11-12kgf.m)80-87lbf.ftCamshaftgearpressplateboltValveclearanceadjustmentprocedureIntakeandexhaustvalveclearance0.4mm(coldstate)Compressio
4、nclearance（TDC，distancebetweenpistontopandthebottomsurfaceofcylinderhead)0.9-1.1mmValveclearanceadjustmentprocedureIntakeandexhaustvalveclearance0.4mm(coldstate)Accordingenginerunningdirectionrotatecrankshaft,makealignmentofTDCmarkondamperpulleyandtimingpointerongearchambercover,atthismome
5、nt,usehandshakeNo.1cylinderintakeandexhaustvalverockerarm,ifbothhaveclearance,thatmeansNo.1cylinderisatTDC,thenyoucanadjustthevalveclearanceofNo.1,2,3,6.Ifthesetworockerarmshasnoclearance,thatmeansNo.4cylinderisatTDC,thenyoucanadjustvalveclearanceofNo.4,5,7,8.Bytwotimesfinishthepreliminary
6、adjustment,thenyouhavetorecheckitonemoretimeforsure.ValveclearanceadjustmentprocedureValveclearanceadjustmentprocedureThrustplateinstallationThrustplateonNo.4mainbearingcapupanddown.Wheninstallation,theoilgroovesideshouldfacecrankshaftsideThrustplateinstallationThrustplatelocatedonNo.4main
7、bearingcapupanddownMainbearinginstallationNo.3maindownbearinghasnooilholeandoilgroove.Donotmixupperanddown,whichwillcauseoilholeblockedandnolubricationforbearingMainbearinginstallationCylinderheadgasketCylinderheadgasketnormallyhas3groups,thethicknessis1.55mm,
