Navistar MaxxForce DT - Maxxforce; And 15 Servicemaxx Snapshots; Graph 1: Air Management System Test (Good)

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DIAGNOSTICMANUAL

MAXXFORCE

11,13AND15SERVICEMAXX™SNAPSHOTS

10.1.GRAPH1:AIRMANAGEMENTSYSTEMTEST(GOOD)

NOTE–Colorsinthegraphsareusedforclarityonlyandwillnotnecessarilymatchthecolorsyouwill

seeinyourServiceMaxx™snapshots

1.Enginespeed(rpm)[Green]

2.IntakeManifoldPressure(IMP)

(psi)[Orange]

3.Turbocharger2WastegateControl

(TC2WC)(percent)[Blue]

Figure26Graph1:AirManagementSystemTest(Good)

GraphAnalysis:

ThisgraphshowsnormaloperationoftheAirManagementSystem(AMS)duringtheAirManagementTest

(AMT).TheAMTdoesnotgivepassorfailresults.ItonlyallowstheusertovalidatetheAMSbymonitoring

theeffectseachactuatorhasonIntakeManifoldPressure(IMP).IMPisnormallybetween8psi(55kPa)to13

psi(90kPa)onenginerampupduringAMT .IfTurbocharger2WastegateControl(TC2WC)isnotoperatingas

designed,boostpressurewillnotrespondtochangesinengineload.Excesssootwillthenbegeneratedby

theenginecausingfrequentregenerationoftheaftertreatmentsystem.

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