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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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Diesel Exhaust Fluid Storage
Diesel Exhaust Fluid (DEF) is considered a very stable
product with a long shelf life. If DEF is kept in tempera-
tures between 10° and 90°F (-12° and 32°C), it will last a
minimum of one year.
DEF is subject to freezing at the lowest temperatures. For
example, DEF may freeze at temperatures at or below 12°
F (-11° C). The system has been designed to operate in
this environment.
NOTE:When working with DEF, it is important to know
that:
•Any containers or parts that come into contact with
DEF must be DEF compatible (plastic or stainless
steel). Copper, brass, aluminum, iron or non-stainless
steel should be avoided as they are subject to corrosion
by DEF.
•If DEF is spilled, it should be wiped up completely.
Adding Diesel Exhaust Fluid
The DEF gauge (located on the instrument cluster) will
display the level of DEF remaining in the tank. Refer to
“Instrument Cluster” and “Instrument Cluster Descrip-
tions” in “Understanding Your Instrument Panel” for
further information.
NOTE:Driving conditions (altitude, vehicle speed, load,
etc.) will effect the amount of DEF that is used in your
vehicle.
DEF Fill Procedure
NOTE:Refer to “Fluids, Lubricants, and Genuine Parts”
in “Maintaining Your Vehicle” for the correct fluid type.
1. Remove cap from DEF tank (located on drivers side of
the vehicle or in fuel door).
258 STARTING AND OPERATING
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•If frequent engine coolant (antifreeze) additions are
required, the cooling system should be pressure tested
for leaks.
•Maintain engine coolant (antifreeze) concentration at a
minimum of 50% OAT coolant (conforming to MS-
12106) and distilled water for proper corrosion protec-
tion of your engine which contains aluminum compo-
nents.
•Make sure that the coolant expansion bottle overflow
hoses are not kinked or obstructed.
•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 engine coolant (antifreeze) performance,
poor gas mileage, and increased emissions.
Charge Air Cooler — Inter-Cooler
The charge air cooler is positioned below 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.
6
MAINTAINING YOUR VEHICLE 315
Page 348 of 360

Adding Engine Coolant (Antifreeze)............114
Adding Fuel..............................92
Air Cleaner, Engine (Engine Air Cleaner Filter). . . .104
Airbag Light.............................23
Alarm Light..............................24
Anti-Lock Warning Light.....................18
Antifreeze (Engine Coolant)..................113
Capacities............................121
Disposal..............................117
Automatic Transmission
Fluid Type............................125
Axle Fluid..............................125
Battery.................................111
Brake Fluid.............................125
Brake System............................118
Fluid Check...........................118
Master Cylinder........................118
Warning Light..........................21Capacities, Antifreeze (Engine Coolant)..........121
Capacities, Fluid..........................121
Caps, Filler
Oil (Engine)...........................103
Radiator (Coolant Pressure)................116
Charge Air Cooler.........................118
Check Engine Light (Malfunction Indicator Light) . . .18
Coolant Pressure Cap (Radiator Cap)...........116
Cooling System...........................112
Adding Coolant (Antifreeze)...............114
Coolant Capacity.......................121
Coolant Level..........................112
Disposal of Used Coolant..................117
Drain, Flush, and Refill...................113
Points to Remember.....................117
Pressure Cap..........................116
Radiator Cap..........................116
Selection of Coolant (Antifreeze).........113,122
346 INDEX - RAM 1500
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Adding Engine Coolant (Antifreeze)............312
Adding Fuel.............................253
Air Cleaner, Engine (Engine Air Cleaner Filter). . . .296
Air Filter...............................296
Airbag Light.............................159
Alarm Light.............................160
Anti-Lock Warning Light....................154
Antifreeze (Engine Coolant)..................311
Capacities............................327
Disposal..............................314
Automatic Transmission
Adding Fluid..........................320
Fluid Level Check.......................319
Fluid Type............................330
Shifting..............................227
Axle Fluid..............................330
Battery.................................309
Blanket...........................216 , 310Emergency Starting......................282
Brake System............................316
Fluid Check...........................316
Master Cylinder........................316
Warning Light.........................157
Brake/Transmission Interlock.................227
Capacities, Antifreeze (Engine Coolant)..........327
Capacities, Fluid..........................327
Caps, Filler
Oil (Engine)...........................294
Radiator (Coolant Pressure)................313
Charge Air Cooler.........................315
Check Engine Light (Malfunction Indicator Light) . .154
Coolant Pressure Cap (Radiator Cap)...........313
Cooling System...........................310
Adding Coolant (Antifreeze)...............312
Coolant Capacity.......................327
Coolant Level..........................310
INDEX - RAM 2500 / 3500 / 4500 / 5500 351