freightliner NEW CASCADIA 2016, Driver Manual

Page: 27 / 207

to a safe stop and investigate the cause to pre-
vent further damage. Do not operate the engine
until the cause has been determined and cor-
rected.
The engine oil pressure gauge ( Fig. 3.1 , item 5) dis-
plays the current engine oil pressure. If engine oil
pressure falls below the minimum levels shown in
Table 3.4 , the CHECK engine lamp will illuminate. If
the condition does not improve, the STOP engine
lamp will also illuminate and an audible warning will
sound. The engine will then derate or shut down, de-
pending on the type of engine protection system in-
stalled.
NOTE: Oil pressures in Table 3.4 are given with
the engine at operating temperature. With the
engine cold, oil pressure may be higher. Indi-
vidual engines may vary from the listed pres-
sures; observe and record pressures when the
engine is new to create a guide for checking
engine condition.
Minimum Oil Pressure
*
Engine Model
At Idle Speed:
psi (kPa)
At Rated RPM:
psi (kPa)
Cummins 15 (103) 35 (241)
Detroit 14 (97) 55 (350)
*
Oil pressures are given with the engine at operating temperature. With
the engine cold, oil pressure may be higher. Individual engines may vary
from the listed pressures; observe and record pressures when the engine
is new to create a guide for checking engine condition.
Table 3.4, Minimum Engine Oil Pressure
Engine Oil Temperature Gauge
NOTICE
A sudden increase in oil temperature that is not
caused by a load increase may indicate mechani-
cal failure. Bring the vehicle to a safe stop and
investigate the cause to prevent further damage.
Do not operate the engine until the cause has
been determined and corrected.
During normal operation, the optional engine oil tem-
perature gauge (
Fig. 3.6 ) should read in the following
temperature range:
•
200 to 260°F (93 to 126°C) for Detroit and
Cummins engines
Under heavy loads, such as when climbing steep
grades, temperatures that exceed the normal oil tem-
perature range for a short period are not unusual. If
the temperature returns to normal when the load de-
creases, there is no problem.
Fuel/Diesel Exhaust Fluid (DEF)
Gauge
The fuel and DEF levels are measured in a dual pur-
pose fuel/DEF level gauge. See
Fig. 3.7 .
The diesel fuel and DEF levels are indicated on the
gauge. A low fuel warning lamp illuminates amber
when the diesel fuel level registers 1/8th of capacity.
The low DEF warning lamp illuminates amber when
the DEF level reaches 10% of capacity. See
Chap-
ter 12 for details of the DEF gauge functions.
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Fig. 3.5, Drive Axle Oil Temperature Gauge (rear drive
axle gauge shown)
f611381 10/31/2016
Fig. 3.6, Engine Oil Temperature Gauge
Instruments
3.9