Safe Parking Procedures; Normal Engine Shutdown Procedure - Komatsu 930E-4SE Operation & Maintenance Manual

OM3062 8/11

SAFE PARKING PROCEDURES

Continue to use safety precautions when preparing
for parking and engine shutdown.
If the truck is being used in consecutive shifts, any
questionable truck performance the operator may
have noticed must be checked by maintenance
personnel before the truck is released to another
operator.
1. Park the truck on level ground, if possible. If the
truck must be parked on a grade, position the
truck at a right angle to the grade.
2. The directional control lever must be in PARK
and chocks must be placed in front of and
behind the wheels to help prevent the truck
from rolling. Each truck should be parked at a
reasonable distance from one another.
Do not activate the wheel lock feature when the
parking brake is activated. Bleed down of
hydraulic pressure may occur, causing the truck
to roll away.
3. Haul roads are not safe parking areas. In an
emergency, pick the safest spot that is most
visible to other machines in the area. If the truck
becomes disabled where traffic is heavy, mark
the truck with warning flags in daylight or flares
at night.
Operating Instructions - Section 30
NORMAL ENGINE SHUTDOWN
PROCEDURE
Follow this procedure at each engine shutdown:
1. Stop the truck out of the way of other traffic on a
level surface. Make sure that there are no
overhead power lines or other obstructions in
case the dump body must be raised.
2. Reduce the engine speed to idle.
3. Place the directional control lever in PARK.
Make sure that the parking brake applied
indicator light is illuminated.
4. Place the rest switch in the ON position to put
the AC drive system in the rest mode. Make
sure that the rest mode indicator light is
illuminated.
5. Turn the key switch to the OFF position. A
shutdown timing sequence will be activated
automatically to allow the engine to cool down
before it is turned off. The timing sequence may
last up to three minutes.
If the engine does not shutdown with the key
switch after the timing sequence is done, use
the engine shutdown switch on the operator cab
center console. Pull this switch up until the
engine stops.
6. With the key switch OFF and engine stopped,
wait at least 90 seconds. Make sure that the
steering circuit is completely depressurized by
turning the steering wheel back and forth
several times. The front wheels should not turn
when the hydraulic pressure is relieved. If the
front wheels can
maintenance personnel.
7. Make sure that the link voltage light in the
control cabinet is off. Notify maintenance
personnel if a light remains illuminated for
longer than five minutes after the engine is shut
down.
8. Close and lock all windows. Remove the key
from the key switch and lock the cab to prevent
unauthorized truck operation. Dismount the
truck properly. Put wheel chocks in place.
Page 30-19
still be turned, notify