Propulsion System Warning; Propulsion System Temperature; High Hydraulic Oil Temperature - Komatsu 930E-2 Shop Manual

A5 No Power
Propulsion System
B5
Warning
Propulsion System
C5
Temperature
High Hydraulic Oil
D5
Temperature
E5 Stop Engine
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.
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D5. HIGH HYDRAULIC OIL TEMPERATURE
RED
This red warning light indicates high oil temperature in
the hydraulic tank. Continued operation could damage
components in the hydraulic system.
AMBER
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.
AMBER
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,
RED
notify maintenance personnel immediately.
RED
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
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.
Operator Cab Controls
immediately. Addi-
N5-23