Mack M359, Manual

Page: 219 / 332

EMISSION SOLUTION AND CONTROL
AFTERTREATMENT, MACK
NOTE
Do not flush DEF spillage into the normal
drain system.
Diesel Exhaust Fluid (DEF)
Consumption
CAUTION
To avoid tank damage, do not attempt to
top-off Diesel Exhaust Fluid (DEF). Diesel
Exhaust Fluid (DEF) expands when frozen
and air volume space at the top of the
tank is needed.
DEF consumption is related to fuel
consumption. A highway truck may
travel 362-482 Km (225–300 miles) or
more on one gallon of DEF. A gauge
much like a fuel gauge will indicate the
level of DEF in the tank. A DEF low-level
warning will activate when DEF is low. If
a driver runs out of DEF completely,
vehicle power will be reduced. When the
DEF tank is refilled, the engine will
resume normal power.
NOTE
DEF tanks are sized for a two to one fuel
to DEF ratio in order to meet US 2010
requirements.
Diesel Exhaust Fluid (DEF)
Availability
DEF is available in 2.5-gallon containers,
55-gallon drums, 275 gallon IBC and in
bulk storage for fleet locations, truck
stops, and dealerships.
DEF freezes at –11 ° C (12 ° F). Protect
DEF from extended periods of severe
cold. For, more information on DEF and
availability visit the website
www.mackscr.com or contact Mack
One-Call at 1–800–866–1177.
Misfilling Diesel or
Aftertreatment DEF Tanks
CAUTION
The missfilling of either Diesel Exhaust
Fluid (DEF) or diesel fuel can cause
vehicle diagnostic trouble codes, improper
component operation or damage. If
missfilling occurs do not start the vehicle.
Also, tow the vehicle immediately to a
certified technician for service.
Although diesel fuel and Aftertreatment
Diesel Exhaust Fluid (DEF) caps are
clearly labeled and filler necks and
nozzles are different accidents can
happen.
Contamination of fluids by misfilling of
diesel or DEF in the wrong tank can
result in vehicle malfunction.
Results of misfilling DEF in
Diesel Tank
• Engine can run poorly or fail
• Injectors can be damaged
• Exhaust system corrosion can occur
between turbocharger and
Aftertreatment DPF
• On Board Diagnostic (OBD)
Diagnostic Trouble Codes (DTC)
• Costly repairs
Results of misfilling diesel in
Aftertreatment DEF Tank
• Diesel can damage the
Aftertreatment SCR system
• Diesel can damage the SCR Catalyst
(chemical damage)
• Emissions can be non-compliant
• On Board Diagnostic (OBD)
Diagnostic Trouble Codes (DTC)
• Costly repairs
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