Oil Pressure Specifications
*
Engine Model
Pressure at
Idle RPM
Pressure at
Rated RPM
Mercedes-Benz
MBE900
†
50 psi (345
kPa)
50 psi (345 kPa)
Cummins ISB 10 psi (69 kPa) 30 psi (207 kPa)
*
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.
†
EPA07 MBE900 engines are equipped with an oil pressure switch.
When above minimum pressure, the dash gauge will display the values
listed in this table. If below minimum oil pressure, the dash gauge will
read 0 psi.
Table 3.1, Oil Pressure Specifications
High Coolant Temperature Warning
The red high coolant temperature warning light (ther-
mometer icon) and emergency buzzer activate when-
ever the coolant temperature goes above a preset
maximum specified by the engine manufacturer. See
Table 3.2.
Maximum Coolant Temperature
Engine Model °F (°C)
Mercedes-Benz MBE900 221 (105)
Cummins ISB 225 (107)
Table 3.2, Maximum Coolant Temperature
Fasten Seat Belts Warning
The red fasten seat belts warning light (seat belt
icon) illuminates for 15 seconds after the ignition
switch is turned on.
Brake System Warning/Parking Brake
On Indicator
The red brake system warning/parking brake on indi-
cator light (BRAKE legend) activates whenever the
parking brake is engaged.
If the vehicle is moving at a speed of 2 mph (3 km/h)
or more, the emergency buzzer will sound until the
parking brake is released.
NOTE: The BRAKE legend is required in the
U.S. In Canada, the icon is required.
Diesel Particulate Filter (DPF) Lamp
Solid illumination indicates a regeneration is required.
Change to a more challenging duty cycle, such as
highway driving, to raise exhaust temperatures for at
least 20 minutes, or perform a stationary regenera-
tion. See the engine operation manual for details.
Blinking indicates that a stationary regeneration is
required immediately. An engine derate and shut-
down will occur. See the instructions in the engine
manufacturer’s operator’s manual to perform a sta-
tionary regeneration.
High Exhaust System Temperature
(HEST) Lamp
A slow (10-second) flash, indicates a regeneration is
in progress, and the driver is not controlling the en-
gine idle speed.
A solid illumination indicates potentially hazardous
exhaust temperatures at the outlet of the tail pipe if
speed is below 5 mph (8 km/h). It does not signify
the need for service; it only alerts the vehicle opera-
tor of high exhaust temperatures. See the engine
operation manual for details.
Left-Turn Signal Arrow
The green left-turn signal arrow flashes on and off
whenever the outside left-turn signal lights are flash-
ing.
Both turn signal arrows flash when the hazard warn-
ing flasher is turned on.
Low Battery Voltage Warning
The red low battery charge warning light (battery
icon) illuminates when the battery voltage drops
below 12 volts.
Water In Fuel Indicator
The amber water in fuel indicator illuminates when
the system detects water in the fuel tank.
NOTICE
Water in the fuel/water separator will appear as
beads. With the engine off, drain the separator
only enough to remove the water; about two tea-
spoons at a time. Do not drain the separator
Instruments
3.7
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