CAUTION
If the vehicle is in a location that may be hazardous when aftertreatment DPF regeneration begins (i.e., in close proximity
to flammable materials or gases, inside tunnels, parked under flammable objects, etc.), the DPF regeneration should be
stopped (if equipped). If DPF regeneration is stopped by the vehicle operator, it must be initiated at a later time when the
vehicle is in a safer location. DPF regenerations that are stopped and never restarted at a later time, however, will require
that the vehicle be taken to an authorized MACK Truck dealer to have the aftertreatment DPF regeneration manually
started with special service tools.
Note:
During vehicle operation, idle speed may increase when the vehicle is stopped at a traffic light to maintain heat in the
DPF for passive regeneration and diesel exhaust fluid (DEF) dosing.
There are two types of aftertreatment DPF regeneration: passive regeneration and parked regeneration.
Passive regeneration occurs when the exhaust gas within the aftertreatment system is hot enough to remove soot without in-
jecting additional fuel into the DPF system. On chassis equipped with a US07 aftertreatment system, DPFs needed
an active regeneration, that included injection of fuel. With the addition of the selective catalytic reduction (SCR) system ac-
tive regenerations are no longer needed for US2017.
Refer to the Exhaust Aftertreatment System Information sun visor label or the Operators Manual for additional aftertreatment
DPF information.
W8056653
Driver Warnings and On Board Diagnostics (OBD)
On Board Diagnostics (OBD)
Beginning with your US2013 compliant vehicle, OBD is introduced. This is very similar to the OBD system that has been re-
quired on passenger cars for many years. OBD is a system that monitors the functions of emissions related components and
alerts the vehicle operator to any detected need for an emission related repair. When the systems detects a malfunction with
an emissions related component it activates the malfunction indicator lamp (MIL).
Mack Body Builder Instructions
CHU, CXU, GU, TD, MRU, LR
USA139046859
Date 5.2017
Body Builder; Engine, MP7, MP8, and MP10
Page 28 (43)
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