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CAUTION!
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.
If the “Water In Fuel Indicator Light” comes on and a
single chime is heard while you are driving, or with the
ignition switch in the ON position, there may be a
problem with your water separator wiring or sensor. See
your authorized dealer for service.
Upon proper draining of the water from the fuel filter, the
“Water In Fuel Indicator Light” will remain illuminated
for approximately 10 seconds. If the water was drained
while the engine was running, the “Water In Fuel Indi-
cator Light” may remain on for approximately three
minutes. NOTE:
Care should be taken in disposing of used fluids
from your vehicle. Used fluids, indiscriminately dis-
carded, can present a problem to the environment. Con-
tact an authorized dealer, service station, or government
agency for advice on recycling programs and for where
used fluids and filters can be properly disposed of in
your area.
Drain the fuel/water separator filter when the “Water In
Fuel Indicator Light” is ON. Within 10 minutes of vehicle
shutdown, turn the drain valve (located on the side of the
filter) counterclockwise 1/4 turn, turn the ignition switch
to the ON position, and allow any accumulated water to
drain. Leave the drain valve open until all water and
contaminants have been removed. When clean fuel is
visible, close the drain valve by turning it clockwise, and
turn the ignition switch to OFF.
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MAINTAINING YOUR VEHICLE 107
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NOTE:The fuel/water separator drain valve is located
on the bottom of the fuel filter housing.
If more than a couple ounces/milliliters of fuel have been
drained, follow the directions for “Priming If The Engine
Has Run Out Of Fuel.”
Fuel Filter Replacement
NOTE: Using a fuel filter that does not meet the
manufacturer’s filtration and water separating require-
ments can severely impact fuel system life and reliability.
CAUTION!
•Diesel fuel will damage blacktop paving surfaces.
Drain the filter into an appropriate container.
(Continued)
1 — Drain Valve
108 MAINTAINING YOUR VEHICLE
Page 111 of 173

CAUTION! (Continued)
•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.
1. Ensure engine is turned off.
2. Place drain pan under the fuel filter drain hose.
3. Open the water drain valve 1/4 turn counterclockwise
and completely drain fuel and water into the approved
container.
4. Close the water drain valve.
5. Remove lid using a socket or strap wrench. Rotate
counterclockwise for removal. Remove 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 clean the sealing surfaces of the lid and housing.
8. Install new o-ring back into ring groove on the filter
housing and lubricate with clean engine oil.
9. Remove new filter cartridge from plastic bag and
install into housing.
NOTE:
Do not remove cartridge from bag until you
reach this step in order to keep cartridge clean.
10. Push down on the cartridge to ensure it is properly
seated. Do not pre-fill the filter housing with fuel.
11. Install lid onto housing and tighten to 22.5 ft lbs
(30.5 N.m). Do not overtighten the lid.
12. Prime the engine using the procedure in “Priming If
The Engine Has Run Out Of Fuel.” Then start the engine
and confirm there are no leaks.
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MAINTAINING YOUR VEHICLE 109
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Priming If The Engine Has Run Out Of Fuel
WARNING!
Do not open the high pressure fuel system with the
engine running. Engine operation causes high fuel
pressure. High pressure fuel spray can cause serious
injury or death.
1. Add a substantial amount of fuel to the tank, approxi-
mately 5 to 10 gal (19L to 38L).
2. Turn the ignition switch to the RUN position, wait for
four seconds, then turn the ignition switch back to the
OFF position. Repeat this step four times.
3. Start the engine using the “Normal Starting” proce-
dure. Refer to “Starting Procedures” in “Starting and
Operating” for further information.
CAUTION!
Do not engage the starter motor for more than 15 sec-
onds at a time. Allow two minutes between the
cranking intervals.
NOTE: The engine may run rough until the air is forced
from all the fuel lines.
WARNING!
Do not use alcohol or gasoline as a fuel blending
agent. They can be unstable under certain conditions
and be hazardous or explosive when mixed with
diesel fuel.
110 MAINTAINING YOUR VEHICLE
Page 113 of 173

CAUTION!
Due to lack of lubricants in alcohol or gasoline, the
use of these fuels can cause damage to the fuel
system.
NOTE:
•A maximum blend of 5% biodiesel, meeting ASTM
specification D-6751 may be used with your Cum-
mins diesel engine. Use of biodiesel mixture in excess
of 5% can negatively impact the fuel filter’s ability to
separate water from the fuel, resulting in high pressure
fuel system corrosion or damage.
•Ethanol blends are not recommended or approved for
use with your Cummins diesel engine.
•In addition, commercially available fuel additives are
not necessary for the proper operation of your Cum-
minsdiesel engine.
Intervention Regeneration Strategy – EVIC
Message Process Flow
The Cummins diesel engine meets all EPA Heavy Duty
Diesel Engine Emissions Standards, resulting in the low-
est emitting diesel engine ever produced.
To achieve these emissions standards, your vehicle is
equipped with a state-of-the-art engine and exhaust
system. The engine and exhaust after-treatment system
work together to achieve the EPA Heavy Duty Diesel
Engine Emissions Standards. These systems are seam-
lessly integrated into your vehicle and managed by the
Cummins Powertrain Control Module (PCM). The PCM
manages engine combustion to allow the exhaust sys-
tem’s catalyst to trap and burn Particulate Matter (PM)
pollutants, with no input or interaction on your part.
Additionally, your vehicle has the ability to alert you to
additional maintenance required on your truck or engine.
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MAINTAINING YOUR VEHICLE 111
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•Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean.
•Do not change the thermostat for Summer or Winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory cooling performance, poor gas
mileage, and increased emissions.
Charge Air Cooler – Inter-Cooler
The charge air cooler is positioned between the radiator
and the air conditioner condenser. Air enters the engine
through the air cleaner and passes through the turbo-
charger, where it is pressurized. This pressurized air
rapidly reaches high temperature. The air is then directed
through a hose to the charge air cooler and through
another hose to the intake manifold of the engine. The air
entering the engine has been cooled by about 50° to 100°F(10° to 38°C). This cooling process enables more efficient
burning of fuel resulting in fewer emissions.
To guarantee optimum performance of the system, keep
the surfaces of the charge air cooler, condenser and
radiator clean and free of debris. Periodically check the
hoses leading to and from the charge air cooler for cracks
or loose clamps resulting in loss of pressure and reduced
engine performance.
Brake System
Brake Master Cylinder – Brake Fluid Level Check
The fluid level of the master cylinder should be checked
when performing under the hood service, or immedi-
ately if the “Brake System Warning Light” indicates
system failure.6
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FLUID CAPACITIES
U.S.Metric
Fuel (Approximate)
2500/3500 Shortbed Models 34 Gallons129 Liters
2500/3500 Longbed Models 35 Gallons132 Liters
Standard Rear Tank – Chassis Cab Only 52 Gallons197 Liters
Optional Midship Tank – Chassis Cab Only 22 Gallons83 Liters
Diesel Exhaust Fluid Tank (Approximate) – Chassis
Cab Only 8 Gallons
30 Liters
Engine Oil with Filter
6.7L Turbo Diesel Engine 12 Quarts11.4 Liters
Cooling System
6.7L Turbo Diesel Engine (MOPAR Engine Coolant/
Antifreeze 5 Year/100,000 Mile Formula or equivalent) 5.7 Gallons
21.4 Liters
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MAINTAINING YOUR VEHICLE 133
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FLUIDS, LUBRICANTS AND GENUINE PARTS
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine Coolant MOPARAntifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hy-
brid Organic Additive Technology) or equivalent.
Engine Oil In ambient temperatures below 0°F (-18°C), 5W-40 syntheticengine oil
that meets Chrysler Materials Standard MS-10902 and the API CJ-4 engine
oil category is required. In ambient temperatures above 0°F (-18°C),
15W-40 engine oil that meets Chrysler Materials Standard MS-10902 and
the API CJ-4 engine oil category is required.
Engine Oil Filter MOPAREngine Oil Filter or equivalent.
Engine Fuel Filter MOPARFuel Filter or equivalent. Must meet 5 micron rating. Using a
fuel filter that does not meet the manufacturers filtration and water
separating requirements can severely impact fuel system life and reli-
ability.
Crankcase Ventilation Filter MOPAR CCV Filter or equivalent.
134 MAINTAINING YOUR VEHICLE