Navistar MaxxForce 9

DIAGNOSTICMANUAL
1.NewAftertreatmentFuelInjector
(AFI)gasket
2.EarlyproductionAFIgasket
Figure25AFIGasket
Step
ActionDecision
7
CAUTION
Donotremovethenozzleinjector
fromthedoserhousing.Spray
patterntestisnolongeravisual
checkforAftertreatmentFuel
Injector(AFI)replacement.
PerformAftertreatmentFuelInjector(AFI)visual
inspection.RemoveAFI(SeeEngineServiceManual)
andcheckforthefollowing:
VisualChecks:
•CorrectAFIgasketisinstalled(Figure25)
•AFIandboreunrestrictedandfreeofcarbonbuildup
•AFItipfreeofcracksandothervisibledamage
DidAFIpassallvisualchecks?
Yes:InstallAFI,thengotostep8.
No:Correctitemsthatfailedvisual
check(s).Afterrepairsarecomplete,
installAFIandgotostep8.
118
https://www.truck-manuals.net/