DIESEL ENGINE BREAK-IN RECOMMENDATIONS
• The Cummins®turbocharged diesel engine does not require a break-in period due
to its construction. Normal operation is allowed, providing the following recom-
mendations are followed: • Warm up the engine before placing it under load.
• Do not operate the engine at idle for prolonged periods.
• Use the appropriate transmission gear to prevent engine lugging.
• Observe vehicle oil pressure and temperature indicators.
• Check the coolant and oil levels frequently.
•
Vary throttle position at highway speeds when carrying or towing significant weight.
NOTE:
Light duty operation such as light trailer towing or no load operation will extend the
time before the engine is at full efficiency. Reduced fuel economy and power may be
seen at this time.
• Because of the construction of the Cummins
®turbocharged diesel engine, engine
run-in is enhanced by loaded operating conditions which allow the engine parts to
achieve final finish and fit during the first 6,000 miles (10 000 km).
DIESEL ENGINE STARTING PROCEDURES
Engine Block Heater
• For ambient temperatures below 0°F (-18°C), engine block heater usage is recommended.
• For ambient temperatures below –20°F (-29°C), engine block heater usage is required.
• The engine block heater cord is routed under the hood to the right side and can be located just behind the grille near the headlamp.
• Connect the heater cord to a ground-fault interrupter protected 110–115 volt AC electrical outlet with a grounded, three-wire extension cord.
NOTE:
The block heater will require 110 volts AC and 6.5 amps to activate the heater element.
•The block heater must be plugged in at least one hour to have an adequate warming
effect on the coolant.
Water In Fuel Message
•
If a Water In Fuel message orindicator appears in the cluster and a chime
sounds five times, the fuel/water separator will need to be drained immediately to
prevent engine damage.
• Refer to “Draining Fuel Water Separator” in this guide for draining instructions or see your dealer.
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120
Cold Start Procedure
• Turn the ignition switch to the ON position. If the Wait To Start
light appears
in the cluster, wait for the light to turn off before starting.
• In extremely cold weather below 0°F (-18°C) it may be beneficial to cycle the manifold heaters twice before attempting to start the engine. This can be
accomplished by turning the ignition OFF for at least five seconds and then back
ON after the “Wait To Start Light” has turned off, but before the engine is started.
However, excessive cycling of the manifold heaters will result in damage to the
heater elements or reduced battery voltage.
• Refer to the Owner's Manual Diesel Supplement on the DVD for further details.
Engine Idling
• Avoid prolonged engine idling. Long periods of idling may be harmful to your engine because combustion chamber temperatures can drop so low that the fuel
may not burn completely.
• Incomplete combustion allows carbon and varnish to form on piston rings, engine valves, and injector nozzles. Also, the unburned fuel can enter the crankcase,
diluting the oil and causing rapid wear to the engine.
• If the engine is allowed to idle, under some conditions the idle speed may increase to 900 RPM then return to normal idle speed. This is normal operation.
WARNING!
Remember to disconnect the cord before driving. Damage to the 110–115 volt
electrical cord could cause electrocution.
DIESEL EXHAUST BRAKE (ENGINE BRAKING)
• The exhaust brake feature will only function when the driver presses the exhaustbrake switch.
• The switch is located on the switch bank below the audio system.
• Your vehicle is also equipped with the Smart Brake feature.
• This feature will automatically provide a variable amount of engine braking in an attempt to maintain a constant vehicle speed.
• The Smart Brake is activated by pressing the exhaust brake switch twice. The first press activate the full strength brake, second press activates the Smart Brake and
third press turns the brake off.
• The Smart Brake target vehicle speed is set when either the vehicle brake or the throttle pedal is released.
• Exhaust braking is most effective when the engine RPM is higher.
NOTE:
For optimum braking power, it is recommended to use the exhaust brake while in
TOW/HAUL mode.
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121
8-Stud — Dual Rear Wheels
• Dual wheels are flat-mounted and center-piloted. The lug nuts are a two-pieceassembly. When the tires are being rotated or replaced, clean these lug nuts and
add two drops of oil at the interface between the hex and the washer.
• Slots in the wheels will assist in prop- erly orienting the inner and outer
wheels. Align these slots when assem-
bling the wheels for best access to the
tire valve on the inner wheel. The tires
of both dual wheels must be com-
pletely off the ground when tightening,
to ensure wheel centering and maxi-
mum wheel clamping.
• Dual wheel models require a special heavy-duty lug nut tightening adapter
(included with the vehicle) to correctly
tighten the lug nuts. Also, when it is necessary to remove and install dual rear
wheels, use a proper vehicle lifting device.
NOTE:
When installing a spare tire as part of a dual rear wheel end combination, the tire
diameter of the two individual tires must be compared. If there is a significant
difference, the larger tire should be installed in a front location. The correct direction
of rotation for dual tire installations must also be observed.
These dual rear wheels should be tightened as follows:
1.
Tighten the wheel nuts in the numbered
sequence to a snug fit.
2.Retighten the wheel nuts in the same
sequence to the torques listed in the
table. Go through the sequence a sec-
ond time to verify that specific torque
has been achieved. Retighten to speci-
fications at 100 miles (160 km) and
after 500 miles (800 km).
•It is recommended that wheel stud nuts
be kept torqued to specifications at all
times. Torque wheel stud nuts to specifications at each lubrication interval.
WHAT TO DO IN EMERGENCIES
145
Component Fluid, Lubricant, or Genuine Part Capacities
Fuel Selection 5.7L 87 Octane Acceptable. 89 Octane Recommended. 1500 Regular
Cab Shortbed/Crew Quad Cab - 26 Gallons
(98 Liters) (Approxi-
mate) 1500 Regular
Cab Longbed/Crew Quad Cab (Optional) -
32 Gallons (121 Liters) (Approximate)
2500/3500 Shortbed -
34 Gallons (129 Liters) (Approximate)
2500/3500 Longbed -
35 Gallons (132 Liters) (Approximate)
Diesel Versions
Component Fluid, Lubricant, or Genuine Part Capacities
Engine Coolant
6.7L Turbo Diesel Engine We recommend you use MOPAR®
Antifreeze/Coolant Ten Year/
150,000 Mile Formula OAT
(Organic Additive Technology). 5.7 Gallons (21.4 Liters)
Engine Oil with Filter
6.7L Turbo Diesel EngineIn ambient temperatures below
0°F (-18°C), We recommend you use 5W-40 synthetic engine oil that meets Chrysler MaterialsStandard MS-10902 and the
API CJ-4 engine oil category is
required. In ambient temperatures above 0°F (-18°C), We recom-
mend you use 15W-40 engine oil that meets Chrysler MaterialsStandard MS-10902 and the API CJ-4 engine oil category is required. 12 Quarts (11.4 Liters)
MAINTAINING YOUR VEHICLE
164
TIRE PRESSURES
• Check the inflation pressure of each tire, including the spare tire, at least monthlyand inflate to the recommended pressure for your vehicle.
•
The tire pressures recommended for your vehicle are found on the “Tire and Loading
Information” label located on the driver’s side door opening.
NOTE:
Refer to the Owner's Manual on the DVD
for more information regarding tire warn-
ings and instructions.
WARNING!
•Overloading of your tires is dangerous. Overloading can cause tire failure, affect
vehicle handling, and increase your stopping distance. Use tires of the recom-
mended load capacity for your vehicle. Never overload them.
•Improperly inflated tires are dangerous and can cause collisions. Under-inflation
is the leading cause of tire failure and may result in severe cracking, component
separation, or “blow out”. Over-inflation reduces a tire’s ability to cushion shock.
Objects on the road and chuck holes can cause damage that results in tire failure.
Unequal tire pressures can cause steering problems. You could lose control of
your vehicle. Over-inflated or under-inflated tires can affect vehicle handling and
can fail suddenly, resulting in loss of vehicle control.
WHEEL AND WHEEL TRIM CARE
•All wheels and wheel trim, especially aluminum and chrome plated wheels, should
be cleaned regularly with a mild soap and water to prevent corrosion.
• To remove heavy soil and/or excessive brake dust, use MOPAR®Wheel Cleaner or
equivalent or select a non-abrasive, non-acidic cleaner.
CAUTION!
Do not use scouring pads, steel wool, a bristle brush, or metal polishes. Do not use
oven cleaner. These products may damage the wheel's protective finish. Avoid
automatic car washes that use acidic solutions or harsh brushes that may damage
the wheel's protective finish. Only MOPAR
®Wheel Cleaner or equivalent is
recommended.
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