Daimler Freightliner Cascadia 2021 - Engine Oil Pressure Gauge; Minimum Oil Pressure

Engine Oil Pressure Gauge
NOTICE
A sudden decrease or absence of oil pressure
may indicate mechanical failure. Bring the vehicle
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
corrected.
The engine oil pressure gauge displays the current
engine oil pressure. If engine oil pressure falls below
the minimum levels shown in
Table 3.3, 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, depending on the type of
engine protection system installed.
NOTE: Oil pressures in Table 3.3 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)
Minimum Oil Pressure
*
Engine Model
At Idle Speed:
psi (kPa)
At Rated RPM:
psi (kPa)
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 3.3, 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 should read in the following tempera-
ture 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. See
Fig. 3.39 and
Fig. 3.40.
f61178108/16/2019
Fig. 3.39, Analog Engine Oil Pressure Gauge - ICUC
f61138110/31/2016
Fig. 3.40, Engine Oil Temperature Gauge
Instruments
3.22