freightliner cascadia Driver Manual page 35

Minimum Oil Pressure
At Idle Speed:
Engine Model
psi (kPa)
Mercedes-Benz
*
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 4.4, 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 should read:
•
200 to 260°F (93 to 126°C) for Detroit and
Cummins engines
•
177 to 203°F (81 to 95°C) for Mercedes-Benz
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 Gauge, Pre-EPA10
The fuel gauge indicates the level of fuel in the fuel
tank(s). A single fuel gauge is standard. If equipped
with an optional second fuel tank, each fuel tank
level is indicated on a separate gauge.
Fuel/Diesel Exhaust Fluid (DEF)
Gauge, EPA10 and Newer
For engines that are EPA10-compliant or newer, the
fuel and DEF levels are measured in a dual purpose
fuel/DEF level gauge. See
The diesel fuel level is indicated at the top of the
gauge, with a low-fuel warning lamp that illuminates
amber when the diesel fuel level registers 1/8th of
capacity.
*
At Rated RPM:
psi (kPa)
7 (50) 36 (250)
Fig. 4.8.
ULTRA LOW SULFUR
DIESEL FUEL ONLY
E
4
E
3
08/21/2009
1. Diesel Fuel Level Indicator
2. DEF Level Indicator
3. Low DEF Warning Lamp (amber below 10% DEF)
4. Low Fuel Warning Lamp (amber at 1/8 tank of fuel)
Fig. 4.8, Fuel/DEF Gauge, EPA10 and Newer
The DEF level is indicated in the lightbar on the
lower portion of the gauge. There is a low DEF level
warning lamp that illuminates amber when the DEF
level reaches 10% of capacity. See
details of the DEF gauge functions.
Primary and Secondary Air Pressure
Gauges
WARNING
If air pressure falls below minimum pressure, the
braking ability of the vehicle will be limited. Slow
the vehicle down and bring it to a gradual stop.
Do not attempt to move the vehicle until air pres-
sure has risen above the minimum level. Moving
a vehicle without adequate braking power could
cause an accident resulting in property damage,
personal injury, or death.
Air pressure gauges register the pressure in the pri-
mary and secondary air systems. Normal pressure,
with the engine running, is 100 to 120 psi (689 to
827 kPa) in both systems.
A low-air-pressure warning light and audible alert,
connected to both the primary and secondary sys-
tems, activate when air pressure in either system
drops below approximately 70 psi (483 kPa).
Instruments
1
1/2
F
DEF
F
2
f611045
Chapter 12 for
4.10