Diesel Exhaust Fluid System Anti-Tampering Feature
Detroit Diesel Electronic Controls (DDEC
®
) monitors for faults in DEF system
components and monitors the DEF supply pressure. If DDEC ® detects that
components critical to the ATS or DEF supply system are disconnected (which
could indicate tampering), or if the diagnostics detect abnormal system pressures
indicative of DEF supply blockage, the warning indicator will illuminate and
DDEC ® will initiate time and mileage counters. If the sensors detect that the ATS
has been tampered with, the malfunction indicator illuminates to warn the driver,
and the engine performance is limited, with a 90 km/h (55 mph) speed limit. If the
system fault is not corrected, the stop engine indicator illuminates and an 8 km/h (5
mph) speed limit will be applied. Similar warnings and penalties will result when
insufficient DEF quantity is present.
Diesel Exhaust Fluid Tank
The DEF tank holds the DEF supply. The filler neck has a smaller diameter 19 mm
(0.75 in.) than the filler neck of the diesel fuel tank and is fitted with a magnetic
insert so that diesel fuel cannot be mistakenly added to the DEF tank. If diesel fuel
is added to the DEF tank or DEF is added to the diesel fuel tank, immediately
contact an authorized Detroit™ service outlet for further instructions.
Air System
Air System
On Detroit™ Gen 5 Heavy Duty engines, outside air enters the engine through the
air filter and is drawn into the turbocharger where it is compressed. The
compressed air is then forced through the charge air cooler (heat exchanger) where
it is cooled. Next, cooled air flows to the intake manifold and into the cylinders,
where the air mixes with atomized fuel from the fuel injectors.
For optimum engine protection from dust and other airborne contaminants, service
the dry-type air cleaners when the maximum allowable air restriction has been
reached. The air cleaner restriction indicator (filter minder) should be inspected per
the maintenance intervals, Refer to section "Preventive Maintenance Tables", or
more often if the engine is operated under severe dusty conditions. Replace the air
filter if the filter minder has reached maximum allowable restriction. Do not allow
the air inlet restriction to exceed maximum allowable restriction. Always use air
filters that meet Detroit™ specifications. The use of air filters that do not meet
Detroit™ specifications may result in premature wear or equipment failure.
Cooling System
Gen 5 DD Platform Operators Manual
All information subject to change without notice.
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DDC-SVC-MAN-0217
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