Navistar MaxxForce 9

DIAGNOSTICMANUAL
Step
ActionDecision
5
DetermineifDPF ,DOC,andPDOCarereusableseetheDPFandDOC
reuseguidelinespage159.
BasedonDPFandDOCRe-UseGuidelines,aretheDPF,DOC,and
PDOCreusable?
Yes:Install
removed
aftertreatment
system
components,and
gotostep6.
No:Replace
failed
component(s).
Afterrepairsare
complete,goto
step6.
Step
ActionDecision
6
Determinerootcauseofexhaustsystemcontamination.(SeeEngine
SymptomsDiagnosticssectioninEngineDiagnosticManual.)
Afterrepairsare
complete,goto
step7.
13
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