A2. Low Hydraulic Tank Level
This warning light indicates the oil level in the hydraulic
tank is below recommended level. Damage to hydrau-
lic pumps may occur if operation continues. Shut truck
down and notify maintenance personnel immediately.
B2. NOT USED
Not currently used. Reserved for future use or options.
C2. Circuit Breaker Tripped
This light will illuminate if any of the circuit breakers in
the relay circuit control boards are tripped. The relay
circuit boards are located in the Electrical Interface
Cabinet.
NOTE: Additional circuit breakers are in the operator
cab behind the center console, however tripping of
these circuit breakers should not activate this light.
D2. Hydraulic Oil Filter Monitor
This light indicates a restriction in the high pressure
filter assembly for either the steering or hoist circuit.
This light will come on before filters start to bypass.
Notify maintenance personnel at earliest opportunity
after light comes on.
NOTE: The filter monitor warning light may also illumi-
nate after the engine is initially started if the oil is cold.
If the light turns off after the oil is warmed, filter
maintenance is not required.
E2. Low Fuel
This amber low fuel indicator will illuminate when the
usable fuel remaining in the tank is approximately 25
gallons (95 liters). A warning buzzer will also sound.
A3. Parking Brake
This amber parking brake indicator will illuminate when
the parking brake is applied. Do not attempt to drive
truck with parking brake applied.
B3. Service Brake
This amber service brake indicator light will illuminate
when the service brake pedal is applied or when wheel
brake lock or emergency brake is applied. Do not
attempt to drive truck from stopped position with serv-
ice brakes applied, except as noted in “Operating
Instructions, Starting On a Grade With a Loaded
Truck”, Section 3, Operation and Maintenance Man-
ual.
C3. Body Up
This amber Body Up indicator, when illuminated,
shows that the body is not completely down on the
frame. The truck should not be driven until body is
down and light is off.
D3. Dynamic Retarding
This amber dynamic retarding indicator light illumi-
nates whenever the retarder pedal (or retarder lever)
is operated, RSC (Retard Speed Control) is activated,
or the automatic overspeed retarding circuit is ener-
gized, indicating the dynamic retarding function of the
truck is operating.
E3. Stop Engine
This RED engine monitor warning light will illuminate
if a serious engine malfunction is detected in the
electronic engine control system.
•
••
• Electric propulsion to the wheelmotors will be
discontinued.
A3 Parking Brake AMBER
B3 Service Brake AMBER
C3 Body Up AMBER
D3 Dynamic Retarding AMBER
E3 Stop Engine RED
A2 Low Hydraulic Tank Level RED
B2 Not Used
C2 Circuit Breaker Tripped AMBER
D2 Hydraulic Oil Filter Monitor AMBER
E2 Low Fuel AMBER
N05044 Operator Cab Controls N5-21
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