A5. NO POWER
This red “No Propel/No Retard” indicator light indi-
cates a fault has occurred which has eliminated the
retarding and propulsion capability. A warning buzzer
will also sound.
If this condition occurs, the operator should safely
stop the truck, move Selector Switch to Neutral,
apply the Park Brake, shutdown engine, and notify
maintenance personnel immediately.
B5. PROPULSION SYSTEM WARNING
When this amber indicator is illuminated, the light
indicates a “No Propel” or “No Retard” event may be
about to occur. It is intended to provide advance notice
of these events when possible. It does not require the
operator to stop the truck, but may suggest that truck
operation be appropriately modified, in case a red
alarm does occur.
C5. PROPULSION SYSTEM TEMPERATURE
This amber AC Drive System “Temperature Warning”
light indicates the drive system temperature is above
a certain level. When this condition occurs, the opera-
tor should consider modifying truck operation in order
to reduce system temperature. The operator is not
required to stop the truck at this time.
D5. HIGH HYDRAULIC OIL TEMPERATURE
This red warning light indicates high oil temperature in
the hydraulic tank. Continued operation could damage
components in the hydraulic system.
If this condition occurs, the operator should safely stop
the truck, move Selector Switch to Neutral, apply the
Park Brake, and operate engine at 1200 - 1500 RPM
to reduce system temperature.
If temperature gauge (25, Figure 5-5) does not
move into the Green range after a few minutes, and
the RED overhead indictor light does not go out,
notify maintenance personnel immediately.
E5. Stop Engine
This red engine monitor warning light will illuminate if
a serious engine malfunction is detected in the elec-
tronic engine control system.
•
••
• Electric propulsion to the wheelmotors will still be
available.
•
••
• Dynamic retarding will still be available if needed
to slow the truck.
Stop the truck as soon as possible in a safe area
and apply the parking brake.
SHUT DOWN THE ENGINE immediately. Addi-
tional engine damage is likely to occur if operation
is continued.
An example of a condition that could cause the Stop
Engine light to illuminate:
•
••
• If the governor senses an overspeed condition,
the ECM will close the fuel solenoid and stop the
flow of fuel to the engine until engine speed is
back within normal operating range.
A5 No Power RED
B5
Propulsion System
Warning
AMBER
C5
Propulsion System
Temperature
AMBER
D5
High Hydraulic Oil
Temperature
RED
E5 Stop Engine RED
N05044 Operator Cab Controls N5-23
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