Navistar MaxxForce 9 - Engine Specifications

DIAGNOSTICMANUAL
Step
ActionDecision
5
Determineifremovedaftertreatmentsystemcomponentsneedto
becleanedseetheDPFandDOCreuseguidelinespage159.
BasedonDPFandDOCRe-UseGuidelines,doanyofthe
removedaftertreatmentsystemcomponentsneedtobecleaned?
Yes:Cleancomponents
usingappropriatecleaning
equipment.Aftercleaning
procedureiscomplete,
Installcomponentsandgo
tostep7.
No:Installremoved
aftertreatmentsystem
components,andthengo
tostep7.
Step
ActionDecision
6
Determinerootcauseofexhaustsystemcontamination.(See
EngineSymptomsDiagnosticssectioninEngineDiagnostic
Manual.)
Afterrepairsarecomplete,
gotostep7.
Step
ActionDecision
7
Checkforanenginenostart.TurnignitionswitchtoONposition
andcrankengineforamaximumof20seconds.Ifenginedoesnot
start,wait2to3minutesandcrankengineagainforamaximum
of20seconds.
Doestheenginestartandrun?
Yes:Gotostep8
No:GotoHardStartand
NoStartDiagnostics
sectioninEngine
DiagnosticManual.
19
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