ENGINECOMPONENTANDLOCATION109
AirIntakeSystem
Freshairenterstheintakeabovethebackofthecab.Plasticductworkleadstheairto
thelterassemblymountedonthebulkheadunderthehood.Animpregnatedpaper
lterpreventsforeignparticlesfrompassingthrough.Theassemblydesignpermits
theadditionofasecondlterifneededinextremeenvironments.
Acombinationpressure/temperaturesensormountedonthepipebetweenthelter
housingandtheturbochargeralertsthedriveriftheltersneedreplacementprior
tothescheduleservice.Thebrakesystemaircompressoralsodrawsfresh,clean
airfromthissamepage.
VariableGeometryTurbocharger
W2033362
Theengineisequippedwithavariablegeometryturbocharger.Theturbinehousing
hasasetofvanesandaslidingnozzleringthatmaintainssufcientbackpressurein
theexhaustmanifoldforproperoperationoftheEGRsystem.Acertainamountof
backpressureisrequiredtopushtheexhaustgasesintothepressurizedintakeair
attheEGRmixer.