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AC DRIVE SYSTEM TEMPERATURE GAUGE
The AC Drive System Temperature
Gauge (23, Figure 5-5) indicates
the drive system temperature.
There are three colored bands:
Green; Yellow; and Red. Green in-
dicates "Normal" operation.
Yellow indicates the system temperature is rising.
There is also an amber (yellow) "temperature warning"
light in the overhead panel (C5, Figure 5-6) that will
illuminate when the temperature exceeds a certain
level. When this condition occurs, the operator should
consider changing truck operation in order to reduce
system temperature.
If the AC Drive System Temperature should reach the
Red band, continued operation could damage compo-
nents in the system.
Safely stop truck, shutdown engine, and notify
maintenance personnel immediately.
HOURMETER
The hourmeter (24, Figure 5-5) reg-
isters the total number of hours the
engine has been in operation.
HYDRAULIC OIL
TEMPERATURE GAUGE
The Hydraulic Oil Temperature
Gauge (25, Figure 5-5) indicates oil
temperature in the hydraulic tank.
There are two colored bands:
Green, and Red.
Green indicates "Normal" operation.
Red indicates high oil temperature in the hydraulic
tank. Continued operation could damage components
in the hydraulic system. There is also a RED "tempera-
ture warning" light in the overhead panel (D5, Figure
5-6) that will illuminate when the temperature exceeds
a certain level.
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 does not move into the Green
range after a few minutes, and the RED overhead
indicator light does not go out, shutdown truck
and notify maintenance personnel immediately.
N05044
REST SWITCH
The "REST" switch (26,
Figure 5-5) is a "rocker"
type switch with a locking
device for the OFF (left
side) position. When in
this position, a small black
tab must be pushed to the
left to unlock the switch before it can be depressed to
switch to the ON (right side) position. When in the ON
position, an internal amber lamp will illuminate. It
should be activated to de-energize the AC Drive
System whenever the engine is to be shutdown, or the
truck parked for a length of time with the engine
running.
The Selector Switch must be in neutral and the vehicle
not moving to enable this function. This will allow the
engine to continue running while the AC Drive System
is de-energized.
Activation of the "REST" switch alone does NOT
completely ensure that the Drive System is safe to
work on.
Refer to Safety Procedures, and check all "LINK-
ON", or "LINK ENERGIZED", indicator lights to
verify the AC DRIVE system is DE-ENERGIZED
before before performing any maintenance on the
Drive System.
DO NOT ACTIVATE THE REST SWITCH WHILE
THE TRUCK IS MOVING!
The truck may unintentionally enter the REST
mode after stopping.
An amber (yellow) indicator light in
the overhead panel (B6, Figure 5-
6) will illuminate when the "REST"
state has been requested and en-
tered.
Operator Cab Controls
N5-17
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Troubleshooting
