DIESEL FUEL FILTER/WATER SEPARATOR
Draining Fuel/Water Separator
•If the “Water in Fuel” indicator lightis illuminated and an audible chime is
heard five times, you should stop the engine and drain the water from the separator.
• The drain plug is located on the bottom of the Fuel Filter and Water Separator assembly which is located above the rear axle next to the fuel tank.
• Loosen the drain plug (located on the bottom filter assembly) then turn the ignition switch to the ON/RUN position to allow any accumulated water to drain.
• When clean fuel is visible, close the drain and switch the ignition to the OFF position.
• Refer to the Diesel Supplement on the DVD for further details.
Fuel Filter Replacement
1. Ensure engine is turned off.
2. Place drain pan under the fuel filter assembly.
3. Open the water drain valve, and let any accumulated water drain.
4. Close the water drain valve.
5. Remove bottom cover using a strap wrench. Rotate counterclockwise for removal. Remove the used o-ring and discard it.
6. Remove the used filter cartridge from the housing and dispose of according to your local regulations.
7. Wipe the sealing surfaces of the lid and housing clean.
8. Install new o-ring back into ring groove on the filter housing and lubricate with clean engine oil.
NOTE:
The WIF (Water In Fuel) sensor is re-usable. Service kit comes with new o-ring for
filter canister and WIF (Water In Fuel) sensor.
CAUTION!
•Diesel fuel will damage blacktop paving surfaces. Drain the filter into an appro-
priate container.
•Do not prefill the fuel filter when installing a new fuel filter. There is a possibility
debris could be introduced into the fuel filter during this action. It is best to install
the filter dry and allow the in-tank lift pump to prime the fuel system.
• If the “Water In Fuel Indicator Light” remains on, DO NOT START the engine before you drain water from the fuel filter to avoid engine damage.
1500 3.0L DIESEL
147
DIESEL EXHAUST FLUID
Diesel Exhaust Fluid (DEF) sometimes known simply by the name of its active
component, UREA – is a key component of selective catalytic reduction (SCR)
systems, which help diesel vehicles meet stringent emission regulations. DEF is a
liquid reducing agent that reacts with engine exhaust in the presence of a catalyst to
convert smog-forming nitrogen oxides (NOx) into harmless nitrogen and water vapor.
Your vehicle is equipped with a Selective Catalytic Reduction system in order to meet
the very stringent diesel emissions standards required by the Environmental Protec-
tion Agency. Selective Catalytic Reduction (SCR) is the first and only technology in
decades to be as good for the environment as it is good for business and vehicle
performance.
The purpose of the SCR system is to reduce levels of NOx (oxides of nitrogen emitted
from engines) that are harmful to our health and the environment to an almost near-zero
level. Small quantities of Diesel Exhaust Fluid (DEF) are injected into the exhaust
upstream of a catalyst where, when vaporized, convert smog-forming nitrogen oxides
(NOx) into harmless nitrogen (N2) and water vapor (H2O), two natural components of
the air we breathe. You can operate with the comfort that your vehicle is contributing to
a cleaner, healthier world environment for this and generations to come.
System Overview
This vehicle is equipped with a Diesel Exhaust Fluid (DEF) injection system and a
Selective Catalytic Reduction (SCR) catalyst to meet the emission requirements.
The DEF injection system consists of the following components:
• DEF tank
• DEF pump
• DEF injector
• Electronically-heated DEF lines
• NOx sensors
• Temperature sensors
• SCR catalyst
The DEF injection system and SCR catalyst enable the achievement of diesel emissions
requirements; while maintaining outstanding fuel economy, drivability, torque and
power ratings.
NOTE:
• Your vehicle is equipped with a DEF injection system. You may occasionally hearan audible clicking noise. This is normal operation.
• The DEF pump will run for a period of time after engine shutdown to purge the DEF system. This is normal operation.
1500 3.0L DIESEL
151
• Turn the drain valve (located on the side of the filter) counterclockwise 1/4 turn,then turn the ignition switch to the ON/RUN position to allow any accumulated
water to drain.
• When clean fuel is visible, close the drain and switch the ignition to OFF.
• Refer to the Diesel Supplement on the DVD for further details.
Fuel Filter Replacement
• With the engine off and a drain pan under the fuel filter drain hose, open the water drain valve 1/4 turn counterclockwise and completely drain fuel and water into the
approved container.
• Close the water drain valve and remove the lid using a socket or strap wrench; rotate counterclockwise for removal. Remove the used o-ring and discard it.
• Remove the used filter cartridge from the housing and dispose of according to your local regulations.
• Wipe clean the sealing surfaces of the lid and housing and install the new o-ring into ring groove on the filter housing and lubricate with clean engine oil.
• Install a new filter in the housing. Push down on the cartridge to ensure it is properly seated. Do not pre-fill the filter housing with fuel.
• Install the lid onto the housing and tighten to 22.5 ft lbs (30.5 N·m). Do not overtighten the lid.
• Start the engine and confirm no leaks are present.
The engine mounted filter housing is equipped with a No-Filter-No-Run (NFNR)
feature. Engine will not run if:
1. No filter is installed.
2. Inferior/Non-approved filter is used. Use of OEM filter is required to ensure vehicle will run.
CAUTION!
•Diesel fuel will damage blacktop paving surfaces. Drain the filter into an appro-
priate container.
•Do not prefill the fuel filter when installing a new fuel filter. There is a possibility
debris could be introduced into the fuel filter during this action. It is best to install
the filter dry and allow the in-tank lift pump to prime the fuel system.
• If the “Water In Fuel Indicator Light” remains on, DO NOT START the enginebefore you drain water from the fuel filter to avoid engine damage.
6.7L CUMMINS® DIESEL
159
CAUTION!
•Diesel fuel will damage blacktop paving surfaces. Drain the filter into an appro-
priate container.
•Do not prefill the fuel filter when installing a new fuel filter. There is a possibility
debris could be introduced into the fuel filter during this action. It is best to install
the filter dry and allow the in-tank lift pump to prime the fuel system.
• If the “Water In Fuel Indicator Light” remains on, DO NOT START the enginebefore you drain water from the fuel filter to avoid engine damage.
EXHAUST REGENERATION
Under certain conditions, your Cummins®diesel engine and exhaust after-treatment
system may never reach the conditions required to remove the trapped particulate
matter. If this occurs, the “Exhaust System — Regeneration Required Now” message
will be displayed on the EVIC screen in your cluster and you will hear one chime to
alert you of this condition. Driving your vehicle at highway speeds for as little as
45 minutes can remedy the condition and allow the engine and exhaust after-
treatment system to remove the trapped particulate matter.
NOTE:
Under typical operating conditions, NO indications of regeneration state will be
displayed. If you do reach 80% of filter capacity, the following messages will assist
you in inducing and understanding the regeneration process.
Perform Service
Your vehicle will require emissions maintenance at a set interval. To help remind you
when this maintenance is due, the Electronic Vehicle Information Center (EVIC) will
display “Perform Service”. When the “Perform Service” message is displayed on the
EVIC it is necessary to have the emissions maintenance performed. Emissions mainte-
nance may include replacing the Closed Crankcase Ventilation (CCV) filter element, and
cleaning of the EGR Cooler. The procedure for clearing and resetting the “Perform
Service” indicator message is located in the appropriate Service Information.
Exhaust System — Regeneration Required Now
“Exhaust System—Regeneration Required Now” will be displayed on the EVIC if the
exhaust particulate filter reaches 80% of its maximum storage capacity.
Exhaust Filter XX% Full
Indicates that the Diesel Particulate Filter (DPF) is approaching full.
Exhaust System — Regeneration in Process Exhaust Filter XX% Full
Indicates that the Diesel Particulate Filter (DPF) is self-cleaning. Maintain your
current driving condition until regeneration is completed.
6.7L CUMMINS® DIESEL
161
DIESEL EXHAUST FLUID
Diesel Exhaust Fluid (DEF) sometimes known simply by the name of its active
component, UREA – is a key component of selective catalytic reduction (SCR)
systems, which help diesel vehicles meet stringent emission regulations. DEF is a
liquid reducing agent that reacts with engine exhaust in the presence of a catalyst to
convert smog-forming nitrogen oxides (NOx) into harmless nitrogen and water vapor.
Your vehicle is equipped with a Selective Catalytic Reduction system in order to meet
the very stringent diesel emissions standards required by the Environmental Protec-
tion Agency. Selective Catalytic Reduction (SCR) is the first and only technology in
decades to be as good for the environment as it is good for business and vehicle
performance.
The purpose of the SCR system is to reduce levels of NOx (oxides of nitrogen emitted
from engines) that are harmful to our health and the environment to an almost near-zero
level. Small quantities of Diesel Exhaust Fluid (DEF) are injected into the exhaust
upstream of a catalyst where, when vaporized, convert smog-forming nitrogen oxides
(NOx) into harmless nitrogen (N2) and water vapor (H2O), two natural components of
the air we breathe. You can operate with the comfort that your vehicle is contributing to
a cleaner, healthier world environment for this and generations to come.
System Overview
This vehicle is equipped with a Diesel Exhaust Fluid (DEF) injection system and a
Selective Catalytic Reduction (SCR) catalyst to meet the emission requirements.
The DEF injection system consists of the following components:
• DEF tank
• DEF pump
• DEF injector
• Electronically-heated DEF lines
• DEF control module
• NOx sensors
• NH3 sensor
• Temperature sensors
• SCR catalyst
The DEF injection system and SCR catalyst enable the achievement of diesel
emissions requirements; while maintaining outstanding fuel economy, drivability,
torque and power ratings.
6.7L CUMMINS® DIESEL
164