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 recommenda-
tions 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 recom-
mended.
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.
6.7L CUMMINS® DIESEL
155
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.
EXTERIOR BULBS
LIGHT BULBS – Exterior Bulb Number
Base Quad Headlamp – Low Beam H11
Base Quad Headlamp – High Beam 9005
Front Turn Signal Lamp
(Base Quad Headlamp) 3157NA
Premium Bi Halogen Projector
Headlamp - Low Beam HIR2
Premium Bi Halogen Projector
Headlamp - High Beam 9005
Front Turn Signal Lamp
(Premium Headlamp) LED (Serviced at Authorized Dealer)
Fog Lamp (Horizontal shape) 9145
Fog Lamp (Vertical shape) 9006
Center High Mounted Stop Lamp
(CHMSL) 921
Rear Cargo Lamp 921
LED Center High Mounted Stop Lamp
(CHMSL)/Cargo Lamp LED (Serviced at Authorized Dealer)
Cab Roof Marker Lamps 194NA
Base Rear Tail/Turn and Stop Lamp 3157K
Premium Rear Tail/Turn and Stop Lamp LED (Serviced at Authorized Dealer)
Premium Backup Lamp T20
Rear Lamp Bar ID Marker Lamp 194
Side Marker Lamps (Dual Rear Wheels) 194
Backup Lamp 921
Rear License Plate Lamp 194
MAINTAINING YOUR VEHICLE
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