Engine Aftertreatment
System
This vehicle has an Engine Aftertreatment
System (EAS), to control vehicle exhaust
emissions. The Engine Aftertreatment
system consist of a Diesel Particulate Filter
(DPF), Selective Catalyst Reduction
(SCR), DPF Switch and warning lights. The
DPF will trap soot from the engine exhaust
gases. The SCR uses Diesel Exhaust Fluid
to reduce the levels of NOx in the engine
exhaust. The EAS will periodically clean
(regenerate) the DPF.
Your vehicle may be equipped with an
additional feature designed to alert a
remote operator that the aftertreatment
system requires a regeneration. When the
EAS detects a heavily loaded DPF it will
sound the city horn for 10 seconds while
continuously flashing the vehicle
headlamps. The operator can resolve and
reset the alert by performing a parked
regeneration. Alternatively, the notification
can be dismissed by pressing the clutch or
the service brake. Dismissing the alert
does not reset it, the next alert will occur at
the next higher soot level if a parked
regeneration is never performed.
Engine Aftertreatment System Detail
1. Hydrocarbon doser from turbo
2. Aftertreatment unit (DPF, DEF
doser and SCR)
3. Filtered/treated exhaust
4. Diesel exhaust fluid (DEF) tank
Please refer to the Engine Aftertreatment
System Supplement provided with the
vehicle for more detailed description of
functionality and warnings.
Trailer Operations
How to Lock the Kingpin
Ensure that the fifth wheel lock is in the
unlocked position.
WARNING
Always inspect the fifth wheel for prop-
er locking after coupling the tractor to
a trailer. Failure to properly couple the
tractor to a trailer (the kingpin is en-
gaged in a closed lock jaw with the
lock jaw secured by a closed plunger)
may cause trailer separation which
could result in an accident involving
death or personal injury.
To lock the fifth wheel around the kingpin:
1. Ensure trailer brakes are locked
and the landing gear is down.
DRIVING - Engine Aftertreatment System
154 Y53-6076-1D1 (09/20)
4
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