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Key Switch
Key switch (1, Figure 5-7) is a three-position (OFF,
RUN, START) switch.
Starting
When the switch is rotated one position clockwise, it
is in the RUN position and all electrical circuits
except START are activated.
1. With the directional control lever in PARK,
rotate key switch fully clockwise to the START
position, and hold this position until the engine
starts. The START position is spring-loaded to
return to RUN when the key is released. If the
engine is equipped with a prelube system, a
noticeable delay will occur before engine crank-
ing begins.
2. After engine has started, place rest switch (5,
Figure 5-7) in the OFF position, which will de-
activate the rest mode of operation. Refer to the
discussion of rest switch later in this chapter.
Engine Stop Switch with Five Minute Idle Timer
Delay
Switch (2, Figure 5-7) is a three-
position, rocker type switch with
OFF, ON and MOMENTARY posi-
tions. When used, the engine is
allowed to idle for approximately
five minutes before it stops. The
delayed shutdown feature allows
the engine to cool down slowly,
reducing internal temperatures as
coolant is circulated through the
engine.
N05070 10/06
Operation
1. Stop the truck, and reduce engine rpm to low
idle. Place the directional control lever in PARK.
Place the rest switch in the ON position to put
the drive system in REST mode of operation.
Refer to the discussion of the rest switch later in
this chapter.
2. Press the top of the engine shutdown switch to
select the ON (center) position. Press the top of
the switch again to activate the timer delay
(MOMENTARY position). Release the switch
and allow it to return to the ON position.
When the delay timer has been activated, the
timer delay indicator light (C4, Figure 5-8) in the
overhead status panel will illuminate to indicate
that the shutdown timing sequence has started.
The engine will continue to idle for approxi-
mately five minutes to allow for proper engine
cool-down before stopping.
3. Turn the key switch counterclockwise to the
OFF position to cause the engine to stop when
the timing sequence is complete. When the
engine stops, this will activate the hydraulic
bleed-down timer and turn off the 24 VDC elec-
tric circuits controlled by the key switch.
NOTE: To cancel the five minute idle timer
sequence, press the timer delay switch to the OFF
(lower) position. If the key switch is in the OFF
position, the engine will stop. If the key switch is in
the ON position, the engine will continue to run.
4. With key switch OFF, and engine stopped, wait
at least 90 seconds. Ensure the steering circuit
is completely bled down by turning the steering
wheel back and forth several times. No front
wheel movement will occur when hydraulic
pressure is relieved.
5. Verify all the link voltage lights turn off within
five minutes after the engine is shut down. One
is located on the rear of the center console in
the cab, two others are located in the access
panel at the left front corner of the electrical
cabinet. If the lights remain on, refer to Section
E in the service manual for additional instruc-
tions and information.
6. Close and lock all windows. Remove key from
key switch and lock cab to prevent possible
unauthorized truck operation. Dismount the
truck properly.
Operator Controls
N5-17
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