Navistar MaxxForce 13 User Manual

DIAGNOSTICMANUAL
Step
ActionDecision
3
Verifyexhaustgastemperaturesarewithinspecication.
1.UsingElectronicServiceTool(EST)with
ServiceMaxx™software,gotoSessions>
Performanceandselecttherecordsnapshoticon
fromthetoolbar.
2.GotoT ests>KOERAftertreatmentT ests>
OnboardFilterCleanlinessT est.
WhenOBFCTiscomplete,stoprecording.Usetheplayback
featureandgraphthefollowingsignalvaluesfromOBFCT :
SignalValues:
•DieselOxidationCatalystInletTemperature(DOCIT)
•DieselOxidationCatalystOutletT emperature(DOCOT)
•DieselParticulateFilterOutletTemperature(DPFOT)
•DPFSootLoad
ComparesnapshottoGraph6,7,and8page129.
Whichgraphdoessnapshotmostcloselymatch?
Graph6:Diagnosticscomplete
Graph7:Gotostep4
Graph8:Gotostep7
Step
ActionDecision
4
DetermineifDPForDOCiscontaminated.RemovetheDPF
andDOC(seeExhaustSystemServiceManual),andcheckfor
signsoflubeoilandcoolantcontamination.
NOTE–Ablackstainingintheexhausttailpipecanoccuron
applicationsthatexperiencehighidletimes.Thisisnormal
andtheDPFshouldNOTbereplaced.
AretheDPForDOCcontaminated?
Yes:RemovePDOC,andthengoto
step5
No:InstallDPFandDOC,andgoto
step7
Step
ActionDecision
5
DetermineifDPF,DOC,andPDOCarereusableseeDPFand
DOCreuseguidelinespage159.
BasedonDPFandDOCRe-UseGuidelines,aretheDPF,DOC,
andPDOCreusable?
Yes:Installremovedaftertreatment
systemcomponents,andgotostep
6.
No:Replacefailedcomponent(s).
Afterrepairsarecomplete,goto
step6.
86
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Navistar MaxxForce 13 Specifications

General

Brand	Navistar
Model	MaxxForce 13
Category	Engine
Language	English