freightliner 108SD, Driver Manual

Page: 71 / 192

Starting After Extended Shutdown
Before engine start-up, complete the engine pretrip
and post-trip inspections and maintenance proce-
dures in
Chapter 20 and Chapter 21 .
NOTICE
Failure to eliminate water-diluted lubricating oil
may lead to serious engine damage at startup.
An engine in storage for an extended period of time
(over winter, for example) may accumulate water in
the oil pan through normal condensation of moisture
on the internal surfaces of the engine. Oil diluted by
water cannot provide adequate bearing protection at
start-up. For this reason, change the engine oil and
filters after extended storage.
Engine Operation
Safety and Environmental
Considerations
All Freightliner diesel engines comply with the re-
quirements 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.
NOTICE
It is extremely important that the following guide-
lines be followed for engines that comply with
EPA10 or newer regulations, or damage may
occur to the aftertreatment device, and the war-
ranty may be compromised.
•
Use ultralow-sulfur diesel with 15 ppm sul-
fur content or less.
•
Do not use fuel blended with used engine
lube oil or kerosene.
•
Use only engine lube oil with a sulfated ash
level less than 1.0 wt%; currently referred
to as CJ-4 oil.
Adequate maintenance of the engine and the diesel
particulate filter (DPF) are the responsibility of the
owner/operator, and are essential to keep the emis-
sion levels low. Good operating practices, regular
maintenance, and correct adjustments are factors
that will help keep emissions within the regulations.
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 under-
stand how the warning system works, an engine
shutdown could occur, causing a safety hazard. See
Chapter 10 for more information.
Engine Break-In
Each engine must pass a full-load operating test on
a dynamometer before shipment, thereby eliminating
the need for a break-in. Before running the engine
for the first time, follow the instructions in the engine
manufacturer’s operation manual specific to your
engine.
Normal Operation
WARNING
Do not operate the engine in an area where flam-
mable vapors such as gasoline or diesel fumes
are present. Shut off 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.
Every engine has an operating range in which it per-
forms most efficiently. The operating range extends
from maximum torque rpm at the low end, to engine
rated speed at the high end. Most engines deliver
best fuel economy when operated in the low- and
mid-speed segments of the efficiency range and pro-
duce maximum horsepower at rated speed, which is
also the recommended maximum speed of the en-
gine. For further engine-specific information, refer to
the engine manufacturer’s operation manual.
Prolonged idling of engines is not recommended, and
is illegal in some states. Idling produces sulfuric acid,
that is absorbed by the lubricating oil, and eats into
bearings, rings, valve stems, and engine surfaces. If
you must idle the engine for cab heat or cooling, use
the high idle function of the cruise control switches.
An idle speed of 900 rpm should be enough to pro-
vide cab heat in above freezing ambient tempera-
tures.
If the engine is programmed with the idle shutdown
timer, ninety seconds before the preset shutdown
time, the CHECK ENGINE light will begin to flash at
a rapid rate. If the position of the clutch pedal or ser-
vice brake changes during this final ninety seconds
the idle shutdown timer will be disabled until reset.
Engine Starting, Operation, and Shutdown
9.2