EMISSION SOLUTION AND CONTROL
AFTERTREATMENT, MACK
DEF Tank Filler Filter
Remove and inspect the Filler neck lter
(2) at each oil change. Clean the ller
lter if debris is present. Replace only if
the component is excessively
contaminated or damaged.
1 DEF Tank Cap
2 DEF Tank Filler Neck and Filter
Aftertreatment Diesel
Particulate Filter
CAUTION
Use of improper diesel fuel and engine
oils, adversely affects performance,
efciency, and durability of the
aftertreatment DPF system and engine.
Potential engine failure is possible.
Manufacturers warranties can also be
rendered void due to usage of improper
fuel. Unapproved fuel additives (including
engine oil) are NOT permitted. Blends of
No. 1D and No. 2D grades of ULSD are
recommended and allowable for cold-
weather operations.
The exhaust aftertreatment system
virtually eliminates exhaust smoke.
White exhaust vapor (water
condensation) can be visible during a
cold start. If black exhaust smoke is
visible during engine operation, a
problem exists with the exhaust
aftertreatment system. Take the vehicle
to an authorized Mack Truck dealer
immediately.
Vehicles equipped with a 2010 or newer
emission-compliant engine have an
exhaust aftertreatment system. This
system includes a Selective Catalytic
Reduction (SCR) system and a
Conventional aftertreatment Diesel
Particulate Filter (DPF). The
aftertreatment DPF takes the place of
the standard mufer, and it reduces
particulate emissions into the
atmosphere. A lter collects soot and
other particulate matter where it is
eventually oxidized using a regeneration
process. Vehicles equipped with an
aftertreatment DPF require the use of
EO-O Premium Plus (or VDS-4) diesel
engine oil and Ultra Low Sulfur Diesel
(ULSD) fuel.
Diesel Particulate Filters
WARNING
For chassis equipped with a heated dump
body, temperature around the area where
the exhaust enters the body can be
elevated. This state is evident particularly
during DPF regeneration.
CAUTION
When active regeneration occurs, the
temperature of the exhaust is elevated.
DO NOT park the vehicle with the exhaust
outlet under low hanging overhead
ammable objects such as trees, awnings,
and structures. Elevated exhaust
temperatures could damage these
objects. DO NOT remove the diffuser.
210
X Publication_PC28
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