Komatsu 830E, Shop Manual

Page: 43 / 783

A03020 General Safety and Operating Instructions A3-29
NORMAL ENGINE SHUTDOWN
PROCEDURE
The following procedure should be followed at each
engine shutdown.
1. Stop the truck out of the way of other traffic on a
level surface and free of overhead power lines
or other obstructions (in case dump body
should need to be raised).
a. Reduce engine speed to idle.
b. Place the directional Selector Switch in
"Neutral".
c. Apply the Parking Brake switch. Be sure the
"Parking Brake Applied" indicator light in the
overhead display panel is illuminated.
d. Allow engine to cool gradually by running at
low idle for 3 to 5 minutes, or if preferred,
activate the 5 minute shutdown delay timer
as described on the following page.
2. With engine cooled down, turn keyswitch coun-
terclockwise to "Off" position for normal shut-
down of engine.
If engine does not shutdown with keyswitch,
use Engine Shutdown Switch on operator cab
center console, and hold this switch down until
engine stops.
3. With keyswitch "Off", and engine stopped, wait
at least 90 seconds. Insure steering circuit is
completely bled down by turning steering wheel
back and forth several times. No front wheel
movement will occur when hydraulic pressure is
relieved. If the vehicle continues to steer after
shutdown, notify maintenance personnel.
4. Close and lock all windows, remove key from
keyswitch and lock cab to prevent possible
unauthorized truck operation. Dismount truck
properly. Put wheel chocks in place.
NOTE: A switch is located at the right front corner of
the truck for ground level engine shutdown.
DELAYED ENGINE SHUTDOWN
PROCEDURE
1. Stop the truck out of the way of other traffic on a
level surface and free of overhead power lines
or other obstructions (in case dump body
should need to be raised).
a. Reduce engine speed to low idle.
b. Place the directional Selector Switch in
"Neutral".
c. Apply the Parking Brake switch. Be sure the
"Parking Brake Applied" indicator light in the
overhead display panel is illuminated.
2. Refer to INSTRUMENT PANEL AND INDICA-
TOR LIGHTS section for location on instrument
panel of the Engine Shutdown Switch with 5
Minute Idle Timer Delay . This is a 3-position
rocker-type switch (Off-On-Momentary).
3. Press the top of the
engine shutdown switch
to select the “ON” (cen-
ter) 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 engine shutdown
timer has been activated,
the timer delay indicator
light in the overhead status
panel will illuminate to indi-
cate that the shutdown tim-
ing sequence has started.
The engine will continue to
idle for approximately 5 minutes to allow for
proper engine cool-down before stopping.
4. Turn the keyswitch counterclockwise to the
"OFF" position to cause the engine to shutdown
when the timing sequence is complete. When
the engine stops, this will activate the hydraulic
bleeddown timer and turn off the 24 VDC elec-
tric circuits controlled by the keyswitch.
NOTE: To cancel the 5 minute idle timer sequence,
press the timer delay shutdown switch to the "OFF"
(lower) position. If the keyswitch is in the "OFF"
position, the engine will stop. If the keyswitch is in the
"ON" position, the engine will continue to run.