Engine Operation - freightliner Cargo Manual

Engines
operator has an opportunity to establish conditions for
the best service life by:
1. Operating as much as possible at three-quarter
load.
2. Avoiding operation at engine idle speeds or at
maximum horsepower levels longer than five min-
utes.
3. Developing the habit of closely watching the engine
instruments during operation. Let up on the throttle
if the oil temperature reaches 250°F (121°C), or if
the coolant temperature exceeds 190°F (88°C).
4. Checking the oil level frequently during the break-in
period.

Engine Operation

Operating vehicles with diesel engines in areas where
there are concentrated flammable vapors (such as die-
sel, gasoline, or propane fumes) can create a hazard-
ous situation. These vapors can be drawn into the en-
gine through the air intake, and cause engine
overspeed. Be especially cautious of low-lying or
closed-in areas, and always check for signs that flam-
mable vapors may be present.
4.5
DANGER
Don't operate the engine in an area where flam-
mable vapors such as gasoline or diesel fumes are
present. Shut down the engine when in an area
where flammable liquids or gases are being
handled. Failure to observe these precautions could
result in serious injury or death.
Cummins Engines
Cummins diesel engines have been built to comply with
the requirements of the Federal (U.S.) Clean Air Act.
Once an engine is placed in service, the responsibility
for meeting both state and local regulations is with the
owner/operator. Good operating practices, regular main-
tenance, and correct adjustments are factors which will
help to stay within the regulations.
Proper maintenance of the engine, which is the respon-
sibility of the owner/operator, is essential to keep the
emission levels low.
The driver should be familiar with the vehicle warning
system in order to bring the vehicle to a safe stop if the
engine malfunctions. If the driver doesn't understand
how the warning system works, an engine shutdown
could occur, causing a safety hazard. See
for information on the control panel for these engines.
Chapter 3