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WARNING!(Continued)
accessible to children), and do not leave the igni-
tion (of a vehicle equipped with Keyless Enter-N-
Go™) in the ACC or ON/RUN mode. A child could
operate power windows, other controls, or move
the vehicle.
NORMAL OPERATION — DIESEL ENGINE
Observe the following when the engine is operating.
•All message center lights are off.
•Malfunction Indicator Light (MIL) is off.
•Engine oil pressure is above 10 psi (69 kPa) at idle.
•Voltmeter operation:
The voltmeter may show a gauge fluctuation at various
engine temperatures. This cycling operation is caused by
the post-heat cycle of the intake manifold heater system.The number of cycles and the length of the cycling
operation is controlled by the engine control module.
Post-heat operation can run for several minutes, and then
the electrical system and voltmeter needle will stabilize.
The cycling action will cause temporary dimming of the
headlamps, interior lamps, and also a noticeable reduc-
tion in blower motor speed.
Cold Weather Precautions
Operation in ambient temperature below 32°F (0°C) may
require special considerations. The following charts sug-
gest these options:
Fuel Operating Range
NOTE:Use “Ultra Low Sulfur Diesel Fuels”ONLY.
214 STARTING AND OPERATING
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allow the lubricating oil and coolant to carry excess heat
away from the combustion chamber, bearings, internal
components, and turbocharger. This is especially impor-
tant for turbocharged, charge air-cooled engines.
NOTE:
•During engine shut down on vehicles equipped with
manual transmissions, it is normal for the diesel en-
gine to resonate heavily for a moment during engine
shut off. When the engine is connected to a manual
transmission, this resonance causes load gear rattle
from the transmission. This is commonly referred to as
“shut down rattle.” The manufacturer recommends
performing engine shut down with the clutch pedal
pushed to the floor (clutch disengaged). When engine
shut down is performed in this manner the rattle is
reduced (not eliminated).
•Refer to the following chart for proper engine shut-
down.
Driving
ConditionLoadTurbo-
charger
Tempera-
tureIdle Time
(min.)
Before
Engine
Shutdown
Stop and
GoEmpty Cool Less than
One
Stop and
GoMedium One
Highway
SpeedsMedium Warm Two
City Traffic Maximum
GCWRThree
Highway
SpeedsMaximum
GCWRFour
Uphill
GradeMaximum
GCWRHot Five
4
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NOTE:For application specific information with respect
to PTO and pump requirements and additional vehicle
information (wiring schematics, preset idle values, en-
gine speed limits, and vehicle hardware and software
requirements) please refer to the Body Builders Guide by
accessingwww.rambodybuilder.comand choosing the
appropriate links.
Power Take Off — Aftermarket Installation
If you did not order the PTO (Power Take Off) Prep
Package from the factory and want to convert your
vehicle, refer to the Body Builder’s Guide at
www.rambodybuilder.comor contact the manufacturer
directly at (866) 205–4102 (toll free).
ENGINE RUNAWAY
Diesel engine runaway is a rare condition affecting diesel
engines, where the engine consumes its own lubrication
oil and runs at higher and higher RPM until it overspeedsto a point where it destroys itself due to either mechani-
cal failure or engine seizure through lack of lubrication.
WARNING!
In case of engine runaway due to flammable fumes
from fuel spills or turbocharger oil leaks being
sucked into the engine, do the following to help
avoid personal injury and/or vehicle damage:
1. Turn the ignition switch to the OFF position.
2. Using a CO2 or dry chemical type fire extinguisher,
direct the spray from the fire extinguisher into the
grille on the passenger side so that the spray enters
the engine air intake.
The inlet for the engine air intake is located behind
the passenger side headlamp and receives air
through the grille.
4
STARTING AND OPERATING 247
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•No. 1 Ultra Low Sulfur diesel fuel should only be used
where extended arctic conditions (-10°F or -23°C) exist.
Bio-Diesel Fuel Requirements
Chassis Cab Models
A maximum blend of 5% biodiesel meeting ASTM speci-
fication D975 may be used with your Cummins diesel
engine. If operation with Biodiesel blends greater than
5% but not greater than 20% (B6-B20) is desired, the truck
must first be reconfigured by an authorized Ram dealer
and the provisions in the following section must be
adhered to.
Pickup Models And Chassis Cab Models Ordered
With B20 Option
Your vehicle has been validated and approved for the use
of Biodiesel in blends up to 20% (B20) provided that youcomply with the requirements outlined below. It is im-
portant that you understand and comply with these
requirements. Failure to comply with Oil Change require-
ments for vehicles operating on biodiesel blends up to
B20 will result in premature engine wear. Such wear is
not covered by the New Vehicle Limited Warranty.
Biodiesel is a fuel produced from renewable resources
typically derived from animal fat, rapeseed oil (Rapeseed
Methyl Ester (RME) base), or soybean oil (Soy Methyl
Ester (SME or SOME) base). Biodiesel fuel has inherent
limitations which require that you understand and ad-
here to the following requirements if you use blends of
Biodiesel greater then 5% but not greater than 20%
(B6-B20). There are no unique restrictions for the use of
B5. Use of blends greater than 20% is not approved. Use
of blends greater than 20% can result in engine damage.
Such damage is not covered by the New Vehicle Limited
Warranty.
250 STARTING AND OPERATING
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Fuel In Oil Dilution — Must Adhere To Required
Oil Change Interval
Fuel dilution of lubricating oil has been observed with
the use of Biodiesel fuel. Fuel in oil must not exceed 5%.
To ensure this limit is met your oil change interval must
be maintained to the following schedule:
•Ram PickUp 2500/3500 Only — 15,000 Miles*
•Ram 3500/4500/5500 Chassis Cab — 12,500 Miles*
(*unless otherwise notified with a oil service message)
CAUTION!
•Under no circumstances should oil change inter-
vals exceed 15,000 miles (24 000 km) pickup or
12,500 miles (20 000 km) chassis cab if operation
occurs with greater than 5% biodiesel blends. Oil
change intervals should not exceed 6 months in
either case. Failure to comply with these Oil
Change requirements for vehicles operating on
biodiesel blends up to B20 may result in premature
engine wear. Such wear is not covered by the New
Vehicle Limited Warranty.
•B20 Biodiesel capable: The engine may suffer se-
vere damage if operated with concentrations of
Biodiesel higher than 20%.
252 STARTING AND OPERATING
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MAINTAINING YOUR VEHICLE
CONTENTS
ENGINE COMPARTMENT — 6.7L DIESEL —
SIX-SPEED 68RFE (2500/3500 Models).......289
ENGINE COMPARTMENT — 6.7L DIESEL —
SIX-SPEED AS69RC HD (3500/CHASSIS CAB
MODELS)............................290
MAINTENANCE PROCEDURES...........291
▫Engine Oil..........................292
▫Engine Air Cleaner Filter................296
▫Draining Fuel/Water Separator Filter.......300
▫Engine Mounted Fuel Filter Replacement.....302
▫Underbody Mounted Fuel Filter Replacement. .304▫Priming If The Engine Has Run Out Of Fuel . .306
▫Intervention Regeneration Strategy — EVIC
Message Process Flow..................307
▫Diesel Exhaust Fluid...................308
▫Maintenance-Free Batteries..............309
▫Cooling System......................310
▫Charge Air Cooler — Inter-Cooler.........315
▫Brake System........................316
▫Clutch Hydraulic System................317
▫Transfer Case — If Equipped.............317
6
Page 291 of 360
ENGINE COMPARTMENT — 6.7L DIESEL — SIX-SPEED 68RFE (2500/3500 Models)
1 — Battery 7 — Washer Fluid Reservoir
2 — Engine Coolant Reservoir 8 — Power Steering Fluid Reservoir
3 — Automatic Transmission Dipstick 9 — Power Distribution Center
4 — Brake Fluid Reservoir 10 — Engine Oil Dipstick
5 — Battery 11 — Engine Oil Fill
6 — Aux Power Distribution Center 12 — Air Cleaner Filter
6
MAINTAINING YOUR VEHICLE 289
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ENGINE COMPARTMENT — 6.7L DIESEL — SIX-SPEED AS69RC HD (3500/CHASSIS CAB MODELS)
1 — Battery 7 — Washer Fluid Reservoir
2 — Engine Coolant Reservoir 8 — Power Steering Fluid Reservoir
3 — Automatic Transmission Dipstick 9 — Power Distribution Center
4 — Brake Fluid Reservoir 10 — Engine Oil Dipstick
5 — Battery 11 — Engine Oil Fill
6 — Aux Power Distribution Center 12 — Air Cleaner Filter 290 MAINTAINING YOUR VEHICLE